Steven Pawson

Steven Pawson

  • SUPV RSCH AST, EARTH SCI REMOTE SENS
  • 301.614.6159
  • NASA/GSFC
  • Mail Code: 610.1
  • Greenbelt , MD 20771
  • Employer: NASA
  • Brief Bio

    Steven Pawson is the Chief of the Global Modeling and Assimilation Ofifice at NASA Goddard Space Flight Center.  In this capacity, he is responsible for guiding a team of about 100 people who develop and use the "Goddard Earth Observing System" (GEOS) Earth System modeling and data assimilation system.  Versions of the GEOS system are used to expand the use of NASA's satellite observations to address topical problems in Earth Science, on timescales ranging from days to decades.


    Steven has worked primarily in the atmospheric sciences, with expertise in the domain of atmospheric transport and composition. He is author or co-author of more than 120 peer-reviewed publications. His early work focused on the stratosphere, including the ozone layer, and over time his interests have moved closer to the ground to include air pollution and the carbon cycle. Steven’s work has used a combination of observations and computer models. He was the founding co-lead of the GEOS Chemistry-Climate Model (CCM) project, in collaboration with the Atmospheric Chemistry and Dynamics Laboratory, which introduced chemical and emissions modules into the GEOS modeling system and conducted studies of ozone change and its interaction with climate. He contributed to ozone data assimilation projects in the GMAO, through which NASA’s EOS-Aura data were introduced into the GMAO's reanalyses. Through Steven’s long-standing collaboration with the Atmospheric Chemistry Modeling Group at Harvard University, the GEOS model is now being used to study tropospheric composition, including a prototype air-quality forecasting system. These chemical components now constitute an essential part of the GEOS Earth System Model. Steven also formulated and led the first “Carbon Data Assimilation” projects using the GEOS system, which led to close involvement in NASA’s OCO-2 mission.


    Steven moved to NASA GSFC in 1997. He has been a member of the GMAO since 2003 and a federal employee since 2005. Previously, he spent almost a decade at the Meteorological Institute of the Free University of Berlin in Germany, including six years on the teaching faculty, where he was awarded the "Habilitation" in the Faculty of Earth Sciences. He completed his education in the United Kingdom, with a Bachelor degree in Mathematics (1982) from the University of York, a Masters in Atmospheric Sciences (1984) from Imperial College/University of London, and a PhD in Meteorology (1988) from the University of Edinburgh. 


    Steven served for four years (2001-2005) as an Editor of the Journal of Geophysical Research - Atmospheres.  He was a co-lead author of Chapter 2 in the Scientific Assessment of Ozone Depletion: 2014. He frequently speaks to broad audiences of many ages about NASA’s activities in Earth Science.

     

    Positions/Employment

    2/2014 - Present

    Chief of the Global Modeling and Assimilation Office

    NASA - Goddard Space Flight Center , Greenbelt, MD, USA
    10/2004 - 2/2014

    Meteorologist - Atmospheric Physicist

    NASA Goddard Space Flight Center, Greenbelt, MD, USA
    9/1997 - 10/2004

    Atmospheric Scientist

    USRA and GEST Based at NASA Goddard Space Flight Center, Greenbelt, MD, USA
    7/1988 - 8/1997

    Research Scientist and Faculty

    Meteorological Institute, Free University of Berlin , Berlin, Germany
    10/1987 - 7/1988

    Postdoctoral Fellow

    Space and Atmospheric Physics, University of Oxford, Oxford, UK

    Professional Service

    Editor of the Journal of Geophysical Research - Atmospheres, 2000-2004

    Co-lead author of Chapter 2 of the World Meteorological Organization Global Ozone Research and Monitoring Project - Report No 55: "Scientific Assessment of Ozone Depletion: 2014"

    Professional Societies

    American Geophysical Union, 1999 - Present
    American Meteorological Society, 2012 - Present
    Member of the Committee on the Middle Atmosphere

    Other Professional Information

    ORCID identity: orcid.org/0000-0003-0200-717X

    ResearcherID: http://www.researcherid.com/rid/I-1865-2014

    Publication statistics (as of 9/22/2017): 146 publications; average 55 citations per paper; H-Index: 43.

    Teaching Experience

    Numerous classes at the Free University of Berlin: 
    • Graduate-level atmospheric physics, radiation and chemistry, including lecture-based classes and hands-on computing projects
    • Undergraduate "Radiation and Thermodynamics" 
    • Undergraduate "Dynamical Meteorology"

    Education

    1987: PhD, Meteorology, University of Edinburgh

    1984: MSc, Atmospheric Physics and Dynamics, Imperial College, University of London

    1982: BSc, Mathematics, University of York

    Publications

    Refereed

    Fujiwara, M., J. S. Wright, G. L. Manney, et al. L. J. Gray, J. Anstey, T. Birner, S. Davis, E. P. Gerber, V. L. Harvey, M. I. Hegglin, C. R. Homeyer, J. A. Knox, K. Krüger, A. Lambert, C. S. Long, P. Martineau, B. M. Monge-Sanz, M. L. Santee, S. Tegtmeier, S. Chabrillat, D. G. Tan, D. R. Jackson, S. Polavarapu, G. P. Compo, R. Dragani, W. Ebisuzaki, Y. Harada, C. Kobayashi, W. McCarty, K. Onogi, S. Pawson, A. Simmons, K. Wargan, J. S. Whitaker, and C.-Z. Zou. 2017. "Introduction to the SPARC Reanalysis Intercomparison Project (S-RIP) and overview of the reanalysis systems." Atmospheric Chemistry and Physics, 1-52 [10.5194/acp-2016-652]

    Lim, Y.-K., S. D. Schubert, Y. Chang, A. M. Molod, and S. Pawson. 2017. "The impact of SST-forced and unforced teleconnections on 2015/16 El Nino winter precipitation over the western United States." Journal of Climate, (Submitted)

    Wargan, K., G. Labow, S. Frith, et al. S. Pawson, N. Livesey, and G. Partyka. 2017. "Evaluation of the Ozone Fields in NASA’s MERRA-2 Reanalysis." Journal of Climate, 30 (8): 2961–2988 [10.1175/jcli-d-16-0699.1]

    Gelaro, R., W. McCarty, M. J. Suárez, et al. R. Todling, A. Molod, L. Takacs, C. Randles, A. Darmenov, M. G. Bosilovich, R. Reichle, K. Wargan, L. Coy, R. Cullather, C. Draper, S. Akella, V. Buchard, A. Conaty, A. da Silva, W. Gu, G.-K. Kim, R. Koster, R. Lucchesi, D. Merkova, J. E. Nielsen, G. Partyka, S. Pawson, W. Putman, M. Rienecker, S. D. Schubert, M. Sienkiewicz, and B. Zhao. 2017. "The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2)." Journal of Climate, 30: 5419–5454 [10.1175/jcli-d-16-0758.1]

    Lim, Y.-K., R. M. Kovach, S. Pawson, and G. R. Vernieres. 2017. "The 2015/2016 El Nino event in context of the MERRA-2 reanalysis: A comparison of the tropical Pacific with 1982/1983 and 1997/1998." Journal of Climate, 30 (13): 4819-4842 [10.1175/JCLI-D-16-0800.1]

    Coy, L., P. A. Newman, S. Pawson, and L. R. Lait. 2017. "Dynamics of the Disrupted 2015/16 Quasi-Biennial Oscillation." Journal of Climate, 30 (15): 5661-5674 [10.1175/jcli-d-16-0663.1]

    Manney, G. L., M. I. Hegglin, Z. D. Lawrence, et al. K. Wargan, L. F. Millán, M. J. Schwartz, M. L. Santee, A. Lambert, S. Pawson, B. W. Knosp, R. A. Fuller, and W. H. Daffer. 2017. "Reanalysis comparisons of upper tropospheric–lower stratospheric jets and multiple tropopauses." Atmospheric Chemistry and Physics, 17 (18): 11541-11566 [10.5194/acp-17-11541-2017]

    Orbe, C., L. D. Oman, S. E. Strahan, et al. D. W. Waugh, S. Pawson, L. L. Takacs, and A. M. Molod. 2017. "Large-Scale Atmospheric Transport in GEOS Replay Simulations." Journal of Advances in Modeling Earth Systems, (In Press) [10.1002/2017ms001053]

    Lim, Y.-K., S. D. Schubert, R. M. Kovach, A. M. Molod, and S. Pawson. 2017. "The roles of climate change and climate variability in the 2017 Atlantic hurricane season." Geophysical Research Letters, (Submitted)

    Nielsen, J. E., S. Pawson, A. Molod, et al. B. Auer, A. M. da Silva, A. R. Douglass, B. Duncan, Q. Liang, M. Manyin, L. D. Oman, W. Putman, S. E. Strahan, and K. Wargan. 2017. "Chemical Mechanisms and Their Applications in the Goddard Earth Observing System (GEOS) Earth System Model." Journal of Advances in Modeling Earth Systems, [10.1002/2017ms001011]

    Aquila, V., W. H. Swartz, D. W. Waugh, et al. P. R. Colarco, S. Pawson, L. M. Polvani, and R. S. Stolarski. 2016. "Isolating the roles of different forcing agents in global stratospheric temperature changes using model integrations with incrementally added single forcings." J. Geophys. Res. Atmos., [10.1002/2015jd023841]

    Coy, L., K. Wargan, A. M. Molod, W. R. McCarty, and S. Pawson. 2016. "Structure and Dynamics of the Quasi-Biennial Oscillation in MERRA-2." J. Climate, 29:14: 5339-5354 [10.1175/jcli-d-15-0809.1]

    Li, F., Y. V. Vikhliaev, P. Newman, et al. S. Pawson, J. Perlwitz, D. W. Waugh, and A. R. Douglass. 2016. "Impacts of Interactive Stratospheric Chemistry on Antarctic and Southern Ocean Climate Change in the Goddard Earth Observing System - Version 5 (GEOS-5)." Journal of Climate, 29 (9): 3199–3218 [10.1175/JCLI-D-15-0572.1]

    Olsen, M. A., K. Wargan, and S. Pawson. 2016. "Tropospheric column ozone response to ENSO in GEOS-5 assimilation of OMI and MLS ozone data." Atmos. Chem. Phys., 16 (11): 7091-7103 [10.5194/acp-16-7091-2016]

    Zeng, X., S. Ackerman, R. D. Ferraro, et al. T. J. Lee, J. J. Murray, S. Pawson, C. Reynolds, and J. Teixeira. 2016. "Challenges and Opportunities in NASA Weather Research." Bulletin of the American Meteorological Society, 97 (7): ES137-ES140 [10.1175/bams-d-15-00195.1]

    Holt, L. A., M. Joan Alexander, L. Coy, et al. A. Molod, W. Putman, and S. Pawson. 2016. "Tropical waves and the quasi-biennial oscillation in a 7-km global climate simulation." Journal of the Atmospheric Sciences, 73: 3771–3783 [10.1175/jas-d-15-0350.1]

    Newman, P. A., L. Coy, S. Pawson, and L. R. Lait. 2016. "The anomalous change in the QBO in 2015-16." Geophysical Research Letters, 43: [10.1002/2016gl070373]

    Wargan, K., S. Pawson, M. A. Olsen, et al. J. C. Witte, A. R. Douglass, J. R. Ziemke, S. E. Strahan, and J. E. Nielsen. 2015. "The Global Structure of Upper Troposphere-Lower Stratosphere Ozone in GEOS-5: A Multi-Year Assimilation of EOS Aura Data." J. Geophys. Res. - Atmos, 120: 2013-2036 [10.1002/2014JD022493]

    Ott, L. E., S. Pawson, G. J. Collatz, et al. W. W. Gregg, D. Menemenlis, H. Brix, C. S. Rousseaux, K. W. Bowman, J. Liu, A. Eldering, M. R. Gunson, and S. R. Kawa. 2015. "Assessing the magnitude of CO2 flux uncertainty in atmospheric CO2 records using products from NASA's Carbon Monitoring Flux Pilot Project." Journal of Geophysical Research - Atmospheres, 120: 734-765 [doi:10.1002/2014JD022411]

    Long, M. S., R. Yantosca, J. E. Nielsen, et al. C. A. Keller, A. da Silva, M. P. Sulprizio, S. Pawson, and D. J. Jacob. 2015. "Development of a grid-independent GEOS-Chem chemical transport model (v9-02) as an atmospheric chemistry module for Earth system models." Geosci. Model Dev., 8 (3): 595-602 [10.5194/gmd-8-595-2015]

    McGrath-Spangler, E. L., A. M. Molod, L. E. Ott, and S. Pawson. 2015. "Impact of planetary boundary layer turbulence on model climate and tracer transport." Atmos. Chem. Phys., 15 (13): 7269-7286 [10.5194/acp-15-7269-2015]

    Coy, L., and S. Pawson. 2014. "The major stratospheric sudden warming of January 2013: Analyses and forecasts in the GEOS-5 data assimilation." Mon. Wea. Rev, 143: 491-510 [10.1175/MWR-D-14-00023.1]

    Keller, C. A., M. S. Long, R. M. Yantosca, et al. A. M. Da Silva, S. Pawson, and D. J. Jacob. 2014. "HEMCO v1.0: a versatile, ESMF-compliant component for calculating emissions in atmospheric models." Geoscientific Model Development, 7 (4): 1409-1417 [10.5194/gmd-7-1409-2014]

    Ziemke, J. R., M. A. Olsen, J. C. Witte, et al. A. R. Douglass, S. E. Strahan, K. Wargan, X. Liu, M. Schoeberl, K. Yang, T. Kaplan, S. Pawson, B. N. Duncan, P. Newman, P. K. Bhartia, and M. K. Heney. 2014. "Assessment and applications of NASA ozone data products derived from Aura OMI/MLS satellite measurements in context of the GMI chemical transport model." J. Geophys. Res. Atmos., 119 (9): 5671-5699 [10.1002/2013JD020914]

    Duncan, B. N., A. I. Prados, L. Lamsal, et al. Y. Liu, D. Streets, P. Gupta, E. Hilsenrath, R. A. Kahn, J. E. Nielsen, A. Beyersdorf, S. Burton, A. Fiore, J. Fishman, D. Henze, C. Hostetler, N. A. Krotkov, P. Lee, M. Lin, S. Pawson, G. Pfister, K. E. Pickering, R. B. Pierce, Y. Yoshida, and L. Ziemba. 2014. "Satellite data of atmospheric pollution for U.S. air quality applications: Examples of applications, summary of data end-user resources, answers to FAQs, and common mistakes to avoid." Atmospheric Environment, 94: 647-662 [10.1016/j.atmosenv.2014.05.061]

    Manney, G. L., M. I. Hegglin, W. H. Daffer, et al. M. J. Schwartz, M. L. Santee, and S. Pawson. 2014. "Climatology of Upper Tropospheric–Lower Stratospheric (UTLS) Jets and Tropopauses in MERRA." J. Climate, 27 (9): 3248-3271 [10.1175/JCLI-D-13-00243.1]

    Liu, J., K. W. Bowman, M. Lee, et al. D. K. Henze, N. Bousserez, H. Brix, G. J. Collatz, D. Menemenlis, L. E. Ott, S. Pawson, D. Jones, and R. Nassar. 2014. "Carbon monitoring system flux estimation and attribution: impact of ACOS-GOSAT X CO₂ sampling on the inference of terrestrial biospheric sources and sinks." Tellus B, 66: 22486 [10.3402/tellusb.v66.22486]

    Palmer, P., M. Parrington, J. Lee, S. Pawson, and A. da Silva. 2013. "Quantifying the impact of BOReal forest fires on Tropospheric oxidants over the Atlantic using Aircraft and Satellites (BORTAS) experiment: design, execution and science overview." Atmos. Chem. Phys., 13 (13): 6239-6261 [10.5194/acp-13-6239-2013]

    Tangborn, A., L. L. Strow, B. Imbiriba, L. Ott, and S. Pawson. 2013. "Evaluation of a new middle-lower tropospheric CO₂ product using data assimilation." Atmos. Chem. Phys., 13 (9): 4487-4500 [10.5194/acp-13-4487-2013]

    Remsberg, E., M. Natarajan, T. Fairlie, et al. K. Wargan, S. Pawson, L. Coy, G. Lingenfelser, and G. Kim. 2013. "On the inclusion of Limb Infrared Monitor of the Stratosphere version 6 ozone in a data assimilation system." J. Geophys. Res. Atmos., 118 (14): 7982-8000 [10.1002/jgrd.50566]

    Strode, S. A., and S. Pawson. 2013. "Detection of carbon monoxide trends in the presence of interannual variability." Journal of Geophysical Research-Atmospheres, 118 ( 21): 12257-122 [10.1002/2013JD020258]

    Li, F., D. Waugh, A. R. Douglass, et al. P. A. Newman, S. Pawson, R. S. Stolarski, S. E. Strahan, and J. E. Nielsen. 2012. "Seasonal variations of stratospheric age spectra in the Goddard Earth Observing System Chemistry Climate Model (GEOSCCM)." J. Geophys. Res., 117 (D5): D05134 [10.1029/2011JD016877]

    Allen, M., D. Erickson, W. Kendall, et al. J. Fu, L. Ott, and S. Pawson. 2012. "The influence of internal model variability in GEOS-5 on interhemispheric CO2 exchange." J. Geophys. Res., 117 (D10): D10107 [10.1029/2011JD017059]

    Li, F., D. W. Waugh, A. R. Douglass, et al. P. A. Newman, S. Pawson, R. S. Stolarski, S. E. Strahan, and J. E. Nielsen. 2012. "Seasonal variations of stratospheric age spectra in the Goddard Earth Observing System Chemistry Climate Model (GEOSCCM)." J. Geophys. Res, 117: 10.1029/2011JD016877.

    Lang, C., D. W. Waugh, M. A. Olsen, et al. A. R. Douglass, Q. Liang, J. E. Nielsen, L. D. Oman, S. Pawson, and R. S. Stolarski. 2012. "The impact of greenhouse gases on past changes in tropospheric ozone." J Geophys Res, 117 (D23): D23304 [10.1029/2012JD018293]

    Parazoo, N., A. Denning, S. R. Kawa, S. Pawson, and R. Lokupitiya. 2012. "CO2 flux estimation errors associated with moist atmospheric processes." Atmos. Chem. Phys., 12 (14): 6405-6416 [10.5194/acp-12-6405-2012]

    Strode, S. A., L. E. Ott, S. Pawson, and T. Bowyer. 2012. "Emission and transport of cesium-137 from boreal biomass burning in the summer of 2010." JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 117: [10.1029/2011JD017382]

    Wang, J., S. Pawson, B. Tian, et al. M.-C. Liang, R.-L. Shia, Y. L. Yung, and X. Jiang. 2011. "El Niño–Southern Oscillation in Tropical and Midlatitude Column Ozone." J. Atmos. Sci., 68 (9): 1911-1921 [10.1175/JAS-D-11-045.1]

    Ott, L., S. Pawson, and J. Bacmeister. 2011. "An analysis of the impact of convective parameter sensitivity on simulated global atmospheric CO distributions." J. Geophys. Res., 116 (D21): D21310 [10.1029/2011JD016077]

    Hardiman, S., N. Butchart, A. Charlton-Perez, et al. T. Shaw, H. Akiyoshi, A. Baumgaertner, S. Bekki, P. Braesicke, M. Chipperfield, M. Dameris, R. R. Garcia, M. Michou, S. Pawson, E. Roxanov, and K. Shibata. 2011. "Improved predictability of the troposphere using stratospheric final warmings." J. Geophys. Res., 116 (D18): D18113 [10.1029/2011JD015914]

    Rienecker, M. M., M. J. Suarez, R. Gelaro, et al. R. Todling, J. Bacmeister, E. Liu, M. G. Bosilovich, S. D. Schubert, L. Takacs, G.-K. Kim, S. Bloom, J. Chen, D. Collins, A. Conaty, A. da Silva, W. Gu, J. Joiner, R. D. Koster, R. Lucchesi, A. Molod, T. Owens, S. Pawson, P. Pegion, C. R. Redder, R. H. Reichle, F. R. Robertson, A. G. Ruddick, M. Sienkiewicz, and J. Woollen. 2011. "MERRA: NASA’s Modern-Era Retrospective Analysis for Research and Applications." J. Climate, 24 (14): 3624-3648 [10.1175/JCLI-D-11-00015.1]

    Shaw, T. A., J. Perlwitz, N. Harnik, P. A. Newman, and S. Pawson. 2011. "The Impact of Stratospheric Ozone Changes on Downward Wave Coupling in the Southern Hemisphere." Journal of Climate, 24 (16): 4210-4229 [10.1175/2011JCLI4170.1]

    Butchart, N., A. J. Charlton-Perez, I. Cionni, et al. S. C. Hardiman, P. H. Haynes, K. Krüger, P. J. Kushner, P. Newman, S. M. Osprey, J. Perlwitz, M. Sigmond, L. Wang, H. Akiyoshi, J. Austin, S. Bekki, A. Baumgaertner, P. Braesicke, C. Brühl, M. Chipperfield, M. Dameris, S. Dhomse, V. Eyring, R. Garcia, H. Gamy, P. Jöckel, J.-F. Lamarque, M. Marchand, M. Michou, O. Morgenstern, T. Nakamura, S. Pawson, D. Plummer, J. Pyle, E. Rozanov, J. Scinocca, T. G. Shepherd, K. Shibata, D. Smale, H. Teyssèdre, W. Tian, D. Waugh, and Y. Yamashita. 2011. "Multimodel climate and variability of the stratosphere." J. Geophys. Res., 116 (D5): D05102 [10.1029/2010JD014995]

    Liang, Q., J. M. Rodriguez, A. R. Douglass, et al. J. Crawford, E. Apel, H. Bian, D. Blake, W. Brune, M. Chin, P. R. Colarco, A. Silva, G. Diskin, B. N. Duncan, L. Huey, D. Knapp, D. Montzka, J. Nielsen, J. Olson, S. Pawson, D. Riemer, A. Weinheimer, and A. Wisthaler. 2011. "Reactive nitrogen, ozone and ozone production in the Arctic troposphere and the impact of stratosphere-troposphere exchange." Atmos. Chem. Phys., 11 (24): 13181-13199 [10.5194/acp-11-13181-2011]

    Allen, D. R., A. R. Douglass, G. L. Manney, et al. S. E. Strahan, J. C. Krosschell, J. V. Trueblood, J. E. Nielsen, S. Pawson, and Z. Zhu. 2011. "Modeling the Frozen-In Anticyclone in the 2005 Arctic Summer Stratosphere." Atmospheric Chemistry and Physics, 11: 4557-4576 [10.5194/acp-11-4557-2011]

    Gerber, E. P., M. P. Baldwin, H. Akiyoshi, et al. J. Austin, S. Bekki, P. Braesicke, N. Butchart, M. P. Chipperfield, M. Dameris, S. S. Dhomse, S. Frith, R. R. Garcia, H. Garny, A. Gettelman, S. C. Hardiman, O. Morgenstern, J. E. Nielsen, S. Pawson, T. Peter, D. A. Plummer, J. A. Pyle, E. Rozanov, J. F. Scinocca, T. G. Shepherd, and D. Smale. 2010. "Stratosphere-troposphere coupling and annular mode variability in chemistry-climate models." J. Geophys. Res., 115 (D3): D00M06 [10.1029/2009JD013770]

    Gettelman, A., M. I. Hegglin, S.-W. Son, et al. J. Kim, M. Fujiwara, T. Birner, S. Kremser, M. Rex, J. A. Anel, J. Austin, J. F. Lamarque, H. Akiyoshi, D. Plummer, T. G. Shepard, J. Scinocca, M. Michou, H. Teyssedre, M. Dameris, H. Garny, C. Brühl, P. Jockel, and S. Pawson. 2010. "Multimodel assessment of the upper troposphere and lower stratosphere: Tropics and global trends." J. Geophys. Res., 115 (D3): D00M08 [10.1029/2009JD013638]

    Jiang, J. H., H. Su, S. Pawson, et al. H.-C. Liu, W. Read, J. W. Waters, M. Santee, D. L. We, M. Schwarz, A. Lambert, R. Fuller, J. N. Lee, and N. Livesey. 2010. "Five year (2004–2009) observations of upper tropospheric water vapor and cloud ice from MLS and comparisons with GEOS-5 analyses." J. Geophys. Res., 115 (D15): D15103 [10.1029/2009JD013256]

    Charlton-Perez, A. J., E. Hawkins, V. Eyring, et al. I. Cionni, G. E. Bodeker, D. E. Kinnison, H. Akiyoshi, S. M. Frith, R. R. Garcia, A. Gettelman, J. F. Lamarque, T. Nakamura, S. Pawson, Y. Yamashita, S. Bekki, P. Braesicke, M. P. Chipperfield, S. Dhomse, M. Marchand, E. Mancini, O. Morgenstern, G. Pitari, D. Plummer, J. A. Pyle, E. Rozanov, J. Scinocca, K. Shibata, T. G. Shepherd, W. Tian, and D. W. Waugh. 2010. "The potential to narrow uncertainty in projections of stratospheric ozone over the 21st century." Atmos. Chem. Phys., 10 (19): 9473-9486 [10.5194/acp-10-9473-2010]

    Butchart, N., I. Cionni, V. Eyring, et al. T. G. Shepherd, D. W. Waugh, H. Akiyoshi, J. Austin, C. Brühl, M. P. Chipperfield, E. Cordero, M. Dameris, R. Deckert, S. Dhomse, S. M. Frith, R. R. Garcia, A. Gettelman, M. A. Giorgetta, D. E. Kinnison, F. Li, E. Mancini, C. McLandress, S. Pawson, G. Pitari, D. A. Plummer, E. Rozanov, F. Sassi, J. F. Scinocca, K. Shibata, B. Steil, and W. Tian. 2010. "Chemistry–Climate Model Simulations of Twenty-First Century Stratospheric Climate and Circulation Changes." J. Climate, 23 (20): 5349-5374 [10.1175/2010JCLI3404.1]

    Li, F., R. S. Stolarski, S. Pawson, P. A. Newman, and D. Waugh. 2010. "Narrowing of the upwelling branch of the Brewer-Dobson circulation and Hadley cell in chemistry-climate model simulations of the 21st century." Geophys. Res. Lett, 37:

    Stolarski, R. S., A. R. Douglass, P. Newman, S. Pawson, and M. Schoeberl. 2010. "Relative Contribution of Greenhouse Gases and Ozone-Depleting Substances to Temperature Trends in the Stratosphere: A Chemistry–Climate Model Study." Journal of Climate, 23 (1): 28-42 [10.1175/2009JCLI2955.1]

    Eyring, V., I. Cionni, G. Bodeker, et al. A. Charlton-Perez, D. Kinnison, J. Scinocca, D. Waugh, H. Akiyoshi, S. Bekki, M. Chipperfield, M. Dameris, S. Dhomse, S. M. Frith, H. Garny, A. Gettelman, A. Kubin, U. Langematz, E. Manicini, M. Marchand, T. Nakamura, L. D. Oman, S. Pawson, G. Pitari, D. Plummer, E. Rozanov, T. Shepherd, K. Shibata, W. Tian, P. Braesicke, S. Hardiman, J. F. Lamarque, O. Morgenstern, J. Pyle, D. Smale, and Y. Yamashita. 2010. "Multi-model assessment of stratospheric ozone return dates and ozone recovery in CCMVal-2 models." Atmos. Chem. Phys., 10 (19): 9451-9472 [10.5194/acp-10-9451-2010]

    Eyring, V., I. Cionni, J. Lamarque, et al. H. Akiyoshi, G. Bodeker, A. Charlton-Perez, S. Frith, A. Gettelman, D. Kinnison, T. Nakamura, L. Oman, S. Pawson, and Y. Yamashita. 2010. "Sensitivity of 21st century stratospheric ozone to greenhouse gas scenarios." Geophys Res Lett, 37 (16): L16807 [10.1029/2010GL044443]

    Austin, J., J. Scinocca, D. Plummer, et al. L. D. Oman, D. Waugh, H. Akiyoshi, S. Bekki, P. Braesicke, N. Butchart, M. Chipperfield, D. Cugnet, A. Dameris, S. Dhomse, V. Eyring, S. M. Frith, R. Garcia, H. Garny, A. Gettelman, S. Hardiman, D. Kinnison, J. Lamarque, E. Mancini, M. Marchand, M. Michou, O. Morgenstern, T. Nakamura, S. Pawson, G. Pitari, J. Pyle, E. Rozanov, T. Shepherd, Q. Zhang, H. Teyssedre, R. Wilson, and Y. Yamashita. 2010. "Decline and recovery of total column ozone using a multimodel time series analysis." J Geophys Res, 115 (D3): D00M10 [10.1029/2010JD013857]

    Li, F., R. S. Stolarski, S. Pawson, P. Newman, and D. Waugh. 2010. "Narrowing of the upwelling branch of the Brewer-Dobson circulation and Hadley cell in chemistry-climate model simulations of the 21st century." Geophys Res Lett, 37 (13): L13702 [10.1029/2010GL043718]

    Ott, L., B. N. Duncan, S. Pawson, et al. P. Colarco, M. Chin, C. A. Randles, T. Diehl, and E. Nielsen. 2010. "Influence of the 2006 Indonesian biomass burning aerosols on tropical dynamics studied with the GEOS-5 AGCM." J Geophys Res, 115 (D14): D14121 [10.1029/2009JD013181]

    Salawitch, R. J., T. Canty, T. Kurosu, et al. K. Chance, Q. Liang, A. M. Da Silva, S. Pawson, J. E. Nielsen, J. M. Rodriguez, and P. K. Bhartia. 2010. "A new interpretation of total column BrO during Arctic spring." Geophysical Research Letters, 37 (21): L21805 [10.1029/2010GL043798]

    Wargan, K., S. Pawson, I. Stajner, and V. Thouret. 2010. "Spatial structure of assimilated ozone in the upper troposphere and lower stratosphere." J. Geophys. Res., 115 (D24): D24316 [10.1029/2010JD013941]

    Wang, H., D. J. Jacob, M. Kopacz, et al. D. B. Jones, P. Suntharalingam, J. A. Fisher, R. Nassar, and S. Pawson. 2009. "Error correlation between CO₂ and CO as constraint for CO₂ flux inversions using satellite data." Atmos. Chem. Phys., 9 (19): 7313-7323 [10.5194/acp-9-7313-2009]

    Tangborn, A., I. Stajner, M. Buchwitz, et al. I. Khlystova, S. Pawson, J. Burrows, R. Hudman, and P. Nedelec. 2009. "Assimilation of SCIAMACHY total column CO observations: Global and regional analysis of data impact." J. Geophys. Res., 114 (D7): D07307 [10.1029/2008JD010781]

    Manney, G. L., I. Stajner, M. Buchwitz, et al. I. Khlystova, S. Pawson, J. Burrows, R. Hudman, and P. Nedelec. 2009. "Aura Microwave Limb Sounder observations of dynamics and transport during the record-breaking 2009 Arctic stratospheric major warming." Geophys. Res. Lett., 36 (12): L12815 [10.1029/2009GL038586]

    Tangborn, A., R. Cooper, S. Pawson, and Z. Sun. 2009. "Chemical Source Inversion Using Assimilated Constituent Observations in an Idealized Two-Dimensional System." Mon. Weather Rev., 137 (9): 3013-3025 [10.1175/2009MWR2775.1]

    Ott, L. E., J. T. Bacmeister, S. Pawson, et al. K. E. Pickering, G. Stenchikov, M. J. Suarez, H. Huntreiser, M. Loewenstein, J. Lopez, and I. Xueref-Remy. 2009. "Analysis of Convective Transport and Parameter Sensitivity in a Single Column Version of the Goddard Earth Observation System, Version 5, General Circulation Model." J. Atmos. Sci., 66 (3): 627-646 [10.1175/2008JAS2694.1]

    Waugh, D. W., L. Oman, S. R. Kawa, et al. R. S. Stolarski, S. Pawson, A. R. Douglass, P. A. Newman, and J. E. Nielsen. 2009. "Impacts of climate change on stratospheric ozone recovery." Geophysical Research Letters, 36 (3): L03805 [10.1029/2008GL036223]

    Newman, P., L. Oman, A. R. Douglass, et al. E. L. Fleming, S. M. Frith, M. M. Hurwitz, S. R. Kawa, C. H. Jackman, N. A. Krotkov, E. R. Nash, J. E. Nielsen, S. Pawson, R. S. Stolarski, and G. J. Velders. 2009. "What would have happened to the ozone layer if chlorofluorocarbons (CFCs) had not been regulated?" Atmos. Chem. Phys., 9 (6): 2113-2128 [10.5194/acp-9-2113-2009]

    Waugh, D. W., L. D. Oman, P. Newman, et al. R. S. Stolarski, S. Pawson, J. E. Nielsen, and J. Perlwitz. 2009. "Effect of zonal asymmetries in stratospheric ozone on simulated Southern Hemisphere climate trends." Geophys Res Lett, 36 (18): L18701 [10.1029/2009GL040419]

    Fogt, R., J. Perlwitz, S. Pawson, and M. Olsen. 2009. "Intra-annual relationships between polar ozone and the SAM." Geophysical Research Letters, 36 (4): L04707 [10.1029/2008GL036627]

    Oman, L., R. S. Stolarski, S. Pawson, D. W. Waugh, and P. Newman. 2009. "On the influence of anthropogenic forcings on changes in the stratospheric mean age." J. Geophys. Res., 114 (D3): D03105 [10.1029/2008JD010378]

    Manney, G., M. Schwartz, K. Kruger, et al. M. Santee, S. Pawson, J. N. Lee, and N. Livesey. 2009. "Aura Microwave Limb Sounder Observations of Dynamics and Transport During the Record-breaking 2009 Arctic Stratospheric Major Warming." Geophys Res Lett, 36 (12): L12815 [10.1029/2009GL038586]

    Jiang, X., S. Pawson, C. D. Camp, et al. J. E. Nielsen, R.-L. Shia, T. Liao, V. Limpasuvan, and Y. L. Yung. 2008. "Interannual Variability and Trends of Extratropical Ozone. Part II: Southern Hemisphere." J. Atmos. Sci., 65 (10): 3030-3041 [10.1175/2008JAS2793.1]

    Perlwitz, J., S. Pawson, R. L. Fogt, J. E. Nielsen, and W. D. Neff. 2008. "Impact of stratospheric ozone hole recovery on Antarctic climate." Geophysical Research Letters, 35 (8): L08714 [10.1029/2008GL033317]

    Son, S.-W., L. M. Polvani, D. W. Waugh, et al. H. Akiyoshi, R. Garcia, D. Kinnison, S. Pawson, E. Rozanov, T. G. Shepherd, and K. Shibata. 2008. "The Impact of Stratospheric Ozone Recovery on the Southern Hemisphere Westerly Jet." Science, 320 (5882): 1486-1489 [10.1126/science.1155939]

    Schwartz, M. J., A. Lambert, G. L. Manney, et al. W. G. Read, N. J. Livesey, L. Froidevaux, C. O. Ao, P. F. Bernath, C. D. Boone, R. E. Cofield, W. H. Daffer, B. J. Drouin, E. J. Fetzer, R. A. Fuller, R. F. Jarnot, J. H. Jiang, B. W. Knosp, K. Krueger, J.-L. F. Li, M. G. Mlynczak, S. Pawson, J. M. Russell III, M. L. Santee, W. V. Snyder, P. C. Stek, R. P. Thurstans, A. M. Tompkins, P. A. Wagner, K. A. Walker, J. W. Waters, and D. L. Wu. 2008. "Validation of the Aura Microwave Limb Sounder temperature and geopotential height measurements." J. Geophys. Res., 113 (D15): D15S11 [10.1029/2007JD008783]

    Jiang, X., S. Pawson, C. D. Camp, et al. J. E. Nielsen, R.-L. Shia, T. Liao, V. Limpasuvan, and Y. L. Yung. 2008. "Interannual Variability and Trends of Extratropical Ozone. Part I: Northern Hemisphere." Journal of the Atmospheric Sciences, 65 (10): 3013-3029 [10.1175/2008JAS2665.1]

    Manney, G. L., K. Krueger, S. Pawson, et al. M. J. Schwartz, W. H. Daffer, N. J. Livesey, M. G. Mlynczak, E. E. Remsberg, J. M. Russell III, and J. W. Waters. 2008. "The evolution of the stratopause during the 2006 major warming: Satellite data and assimilated meteorological analyses." J. Geophys. Res., 113 (D11): D11115 [10.1029/2007JD009097]

    Pawson, S., R. Stolarski, A. Douglass, et al. P. Newman, J. Nielsen, S. Frith, and M. Gupta. 2008. "Goddard Earth Observing System chemistry-climate model simulations of stratospheric ozone-temperature coupling between 1950 and 2005." J. Geophys. Res, 113:

    Stajner, I., K. Wargan, S. Pawson, et al. H. Hayashi, L. P. Chang, R. C. Hudman, L. Froidevaux, N. Livesey, P. Levelt, A. M. Thompson, D. W. Tarasick, R. Stuebi, S. B. Andersen, M. Yela, G. Koenig-Laslo, F. J. Schmidlin, and J. C. Witte. 2008. "Assimilated Ozone from EOS-Aura: Evaluation of the Tropopause Region and Tropospheric Columns." J. Geophys. Res.-Atmos., 113: D15S32 [doi:10.1029/2007JD008863]

    Oman, L., D. Waugh, S. Pawson, R. S. Stolarski, and J. E. Nielsen. 2008. "Understanding the Changes of Stratospheric Water Vapor in Coupled Chemistry–Climate Model Simulations." Journal of the Atmospheric Sciences, 65 (10): 3278-3291 [10.1175/2008JAS2696.1]

    Pawson, S., R. S. Stolarski, A. R. Douglass, et al. P. A. Newman, J. E. Nielsen, S. M. Frith, and M. L. Gupta. 2008. "Goddard Earth Observing System chemistry-climate model simulations of stratospheric ozone temperature coupling between 1950 and 2005." J Geophy Res Atmos, 113 (D12, D12103, doi:10):

    Limpasuvan, V., D. L. Wu, M. J. Alexander, et al. M. Hu, M. Xue, S. Pawson, and J. R. Perkins. 2007. "Stratospheric gravity wave simulation over Greenland during 24 January 2005." J. Geophys. Res., 112 (D10): D10115 [10.1029/2006JD007823]

    Miller, C. E., D. Crisp, P. C. de Cola, et al. S. C. Olsen, J. T. Randerson, A. Michalak, A. Alkhaled, P. Rayner, D. J. Jacob, P. Suntharalingam, D. B. Jones, A. S. Denning, M. E. Nicholls, S. C. Doney, and S. Pawson. 2007. "Precision requirements for space-based XCO₂ data." J. Geophys. Res., 112 (D10): D10314 [10.1029/2006JD007659]

    Manney, G. L., W. H. Daffer, J. M. Zawodny, et al. P. F. Bernath, K. W. Hoppel, K. A. Walker, B. W. Knosp, C. Boone, E. E. Remsberg, M. L. Santee, V. L. Harvey, S. Pawson, D. Jackson, L. Deaver, H. C. Pumphrey, A. Lambert, M. J. Schwartz, L. Froidevaux, S. McLeod, L. L. Takacs, M. J. Suarez, C. R. Trepte, D. C. Cuddy, N. J. Livesey, R. S. Harwood, and J. W. Waters. 2007. "Solar occultation satellite data and derived meteorological products: Sampling issues and comparisons with Aura Microwave Limb Sounder." J. Geophys. Res., 112 (D24): D24S50 [10.1029/2007JD008709]

    Pawson, S., I. Stajner, S. R. Kawa, et al. H. Hayashi, W. Tan, J. E. Nielsen, Z. Zhu, L.-P. Chang, and N. J. Livesey. 2007. "Stratospheric transport using 6-h-averaged winds from a data assimilation system." J. Geophys. Res., 112 (D23): D23103 [10.1029/2006JD007673]

    Stajner, I., C. Benson, H.-C. Liu, et al. S. Pawson, N. Brubaker, L.-P. Chang, L. P. Riishojgaard, and R. Todling. 2007. "Ice polar stratospheric clouds detected from assimilation of Atmospheric Infrared Sounder data." Geophys. Res. Lett, 34 (16): L16802 [10.1029/2007GL029415]

    Eyring, V., D. W. Waugh, G. E. Bodeker, et al. E. Cordero, H. Akiyoshi, J. Austin, S. R. Beagley, B. A. Boville, P. Braesicke, C. Bruhl, N. Butchart, M. P. Chipperfield, M. Dameris, R. Deckert, M. Deushi, S. M. Frith, R. R. Garcia, A. Gettelman, M. A. Giorgetta, D. E. Kinnison, E. Mancini, E. Manzini, D. R. Marsh, S. Matthes, T. Nagashima, P. A. Newman, J. E. Nielsen, S. Pawson, G. Pitari, D. A. Plummer, E. Rozanov, M. Schraner, J. F. Scinocca, K. Semeniuk, T. G. Shepherd, K. Shibata, B. Steil, R. S. Stolarski, W. Tian, and M. Yoshiki. 2007. "Multimodel projections of stratospheric ozone in the 21st century." J. Geophys. Res., 112 (D16): D16303 [10.1029/2006JD008332]

    Charlton, A. J., L. M. Polvani, U. Perlwitz, et al. F. Sassi, E. Manzini, K. Shibata, S. Pawson, J. E. Nielsen, and D. Rind. 2007. "A New Look at Stratospheric Sudden Warmings. Part II: Evaluation of Numerical Model Simulations." J. Climate, 20 (3): 470-488 [10.1175/JCLI3994.1]

    Pawson, S., I. Stajner, S. Kawa, et al. H. Hayasha, W. Tan, J. Nielsen, Z. Zhu, L. Chang, and N. Livesey. 2007. "Stratospheric transport using 6-h-averaged winds from a data assimilation system." J Geophys Res, 112 (D23103): 1-12.

    Morris, G., S. Hersey, A. M. Thompson, et al. O. R. Cooper, S. Pawson, E. Nielsen, P. R. Colarco, W. W. McMillan, A. Stohl, S. Turquety, J. Warner, B. J. Johnson, T. L. Kuscera, D. E. Larko, S. J. Oltmans, and J. C. Witte. 2006. "Alaskan and Canadian forest fires exacerbate ozone pollution over Houston, Texas, on 19 and 20 July 2004." J. Geophys. Res., 111 (D24): D24S03 [10.1029/2006JD007090]

    Stolarski, R. S., A. R. Douglass, S. Steenrod, and S. Pawson. 2006. "Trends in Stratospheric Ozone: Lessons Learned from a 3D Chemical Transport Model." J. Atmos. Sci., 63 (3): 1028-1041 [10.1175/JAS3650.1]

    Gaspari, G., S. E. Cohn, J. Guo, and S. Pawson. 2006. "Construction and application of covariance functions with variable length-fields." Q.J.R. Meteorol. Soc., 132 (619): 1815-1838 [10.1256/qj.05.08]

    Eyring, V., N. Butchart, D. W. Waugh, et al. H. Akiyoshi, J. Austin, S. Bekki, G. E. Bodeker, B. A. Boville, C. Bruhl, M. P. Chipperfield, E. Cordero, M. Dameris, M. Deushi, V. E. Fioletov, S. M. Frith, R. R. Garcia, A. Gettelman, M. A. Giorgetta, V. Grewe, L. Jourdain, D. E. Kinnison, E. Mancini, E. Manzini, M. Marchand, D. R. Marsh, T. Nagashima, P. Newman, J. E. Nielsen, S. Pawson, G. Pitari, D. A. Plummer, E. Rozanov, M. Schraner, T. G. Shepherd, K. Shibata, R. S. Stolarski, H. Struthers, W. Tian, and M. Yoshiki. 2006. "Assessment of temperature, trace species, and ozone in chemistry-climate model simulations of the recent past." J. Geophys. Res., 111 (D22): D22308 [10.1029/2006JD007327]

    Stolarski, R., A. Douglass, S. Steenrod, and S. Pawson. 2006. "Trends in stratospheric ozone: Lessons learned from a 3-D chemical transport model." J Atmos Sc, 63: 1028-1041.

    Stajner, I., K. Wargan, L. Chang, et al. H. Hayashi, S. Pawson, and H. Nakajima. 2006. "Assimilation of ozone profiles from the Improved Limb Atmospheric Spectrometer-II: Study of Antarctic ozone." JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 111 (D11): [10.1029/2005JD006448]

    Stolarski, R. S., A. R. Douglass, M. Gupta, et al. P. A. Newman, S. Pawson, M. Schoeberl, and J. Nielsen. 2006. "An ozone increase in the Antarctic summer stratosphere: A dynamical response to the ozone hole." Geophys Res Lett, 33: L21805 [10.1029/2006GL026820 ]

    Bian, H., S. R. Kawa, M. Chin, et al. S. Pawson, Z. Zhu, P. Rasch, and S. Wu. 2006. "A test of sensitivity to convective transport in a global atmospheric CO2 simulation." Tellus B, 58 (5): 463-475 [10.1111/j.1600-0889.2006.00212.x]

    Manney, G. L., M. L. Santee, D. R. Allen, et al. K. Kruger, B. Naujokat, J. L. Sabutis, S. Pawson, R. Swinbank, C. E. Randall, A. J. Simmons, and C. Long. 2005. "Diagnostic Comparison of Meteorological Analyses during the 2002 Antarctic Winter." Mon. Weather Rev., 133 (5): 1261-1278 [10.1175/MWR2926.1]

    Manney, G. L., D. R. Allen, J. L. Sabutis, et al. W. A. Lahoz, A. A. Scaife, R. Swinbank, C. E. Randall, S. Pawson, B. Naujokat, and A. O'Neill. 2005. "Simulations of Dynamics and Transport during the September 2002 Antarctic Major Warming." J. Atmos. Sci., 62 (3): 690-707 [10.1175/JAS-3313.1]

    Manney, G. L., M. L. Santee, N. J. Livesey, et al. L. Froidevaux, W. G. Read, H. C. Pumphrey, J. W. Waters, and S. Pawson. 2005. "EOS Microwave Limb Sounder observations of the Antarctic polar vortex breakup in 2004." Geophysical Research Letters, 32 (12): L12811 [10.1029/2005GL022823]

    Manney, G. L., K. Kruger, J. L. Sabutis, S. A. Sena, and S. Pawson. 2005. "The remarkable 2003–2004 winter and other recent warm winters in the Arctic stratosphere since the late 1990s." J. Geophys. Res., 110 (D4): D04107 [10.1029/2004JD005367]

    Eyring, V., N. Harris, M. Rex, et al. T. G. Shepherd, D. W. Fahey, G. T. Amanatidis, J. Austin, M. P. Chipperfield, M. Dameris, P. Forster, A. Gettelman, H. Graf, T. Nagashima, P. A. Newman, S. Pawson, M. J. Prather, J. A. Pyle, R. J. Salawitch, B. D. Santer, and D. W. Waugh. 2005. "A strategy for process-oriented validation of coupled chemistry-climate models." B. Amer. Met. Soc, 86 (8): 1117-1133 [10.1175/BAMS-86-8-1117]

    Wargan, K., I. Stajner, S. Pawson, R. Rood, and W. Tan. 2005. "Assimilation of ozone data from the Michelson Interferometer for Passive Atmospheric Sounding." QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 131 (611): [10.1256/qj.04.184]

    Ma, J., D. W. Waugh, A. R. Douglass, et al. S. R. Kawa, P. A. Newman, S. Pawson, R. S. Stolarski, and S. J. Lin. 2004. "Interannual variability of stratospheric trace gases: The role of extratropical wave driving." Q. J. R. Meteorol. Soc., 130 (602): 2459-2474 [10.1256/qj.04.28]

    Gupta, M., A. R. Douglass, S. R. Kawa, and S. Pawson. 2004. "Use of radon for evaluation of atmospheric transport models: sensitivity to emissions." Tellus B, 56 (5): 404-412 [10.1111/j.1600-0889.2004.00124.x]

    Crisp, D., R. M. Atlas, F.-M. Breon, et al. L. R. Brown, J. P. Burrows, P. Ciais, B. J. Connor, S. C. Doney, I. Y. Fung, D. J. Jacob, C. E. Miller, D. O'Brien, S. Pawson, J. T. Randerson, P. Rayner, R. J. Salawitch, S. P. Sander, B. Sen, G. L. Stephens, and P. P. Tans. 2004. "The Orbiting Carbon Observatory (OCO) Mission." Adv. Space Res., 34: 700-703 [Manuscript No. A1.2-0007-02]

    Randel, W., P. Udelhofen, E. Fleming, et al. M. Geller, M. Gelman, K. Hamilton, D. Karoly, D. Ortland, and S. Pawson. 2004. "The SPARC Intercomparison of Middle-Atmosphere Climatologies." J. Climate, 17 (5): 986-1003 [10.1175/1520-0442(2004)017<0986:TSIOMC>2.0.CO;2]

    Tan, W. W., M. A. Geller, S. Pawson, and A. da Silva. 2004. "A case study of excessive subtropical transport in the stratosphere of a data assimilation system." J. Geophys. Res., 109 (D11): D11102 [10.1029/2003JD004057]

    Stajner, I., N. Winslow, R. B. Rood, and S. Pawson. 2004. "Monitoring of observation errors in the assimilation of satellite ozone data." J. Geophys. Res., 109 (D6): D06309 [10.1029/2003JD004118]

    Gupta, M. L., A. R. Douglass, S. R. Kawa, and S. Pawson. 2004. "Use of radon for evaluation of atmospheric transport models: sensitivity to emissions." Tellus Ser B - Chem and Phys. Meteor, 56: 404-412.

    Kawa, S. R., D. J. Erickson III, S. Pawson, and Z. Zhu. 2004. "Global CO₂ transport simulations using meteorological data from the NASA data assimilation system." J. Geophys. Res., 109 (D18): D18312 [10.1029/2004JD004554]

    Ma, J., D. W. Waugh, A. R. Douglass, et al. S. R. Kawa, P. A. Newman, S. Pawson, R. S. Stolarski, S. J. Lin, and Q. J. Roy. 2004. "Interannual variability of stratospheric trace gases: The role of extratropical wave driving." Met. Soc, 130: 2459-2474.

    Coy, L., I. Stajner, A. M. da Silva, et al. J. Joiner, R. B. Rood, P. Pawson, and S. J. Lin. 2003. "High-Frequency Planetary Waves in the Polar Middle Atmosphere as Seen in a Data Assimilation System." J. Atmos. Sci., 60 (24): 2975-2992 [10.1175/1520-0469(2003)060<2975:HPWITP>2.0.CO;2]

    Horinouchi, T., S. Pawson, K. Shibata, et al. U. Langematz, E. Manzini, M. A. Giorgetta, F. Sassi, R. J. Wilson, K. Hamilton, J. De Grandpre, and A. A. Scaife. 2003. "Tropical Cumulus Convection and Upward-Propagating Waves in Middle-Atmospheric GCMs." J. Atmos. Sci., 60 (22): 2765-2782 [10.1175/1520-0469(2003)060<2765:TCCAUW>2.0.CO;2]

    Schoeberl, M. R., A. R. Douglass, S. Pawson, and Z. Zhu. 2003. "A comparison of the lower stratospheric age spectra derived from a general circulation model and two data assimilation systems." J. Geophys. Res., 108 (D3): 4113 [10.1029/2002JD002652]

    Douglass, A. R., M. R. Schoeberl, R. B. Rood, and S. Pawson. 2003. "Evaluation of transport in the lower tropical stratosphere in a global chemistry and transport model." J. Geophys. Res., 108 (D9): 4259 [10.1029/2002JD002696]

    Austin, J., D. Shindell, S. R. Beagley, et al. C. Brühl, M. Dameris, E. Manzini, T. Nagashima, P. Newman, S. Pawson, G. Pitari, E. Rozanov, C. Schnadt, and T. G. Shepherd. 2003. "Uncertainties and assessments of chemistry-climate models of the stratosphere." Atmos. Chem. Phys., 3 (1): 1-27 [10.5194/acp-3-1-2003]

    Pawson, S., K. Kodera, K. Hamilton, et al. T. G. Shepherd, S. R. Beagley, B. A. Boville, J. D. Farrara, T. D. Fairlie, A. Kitoh, W. A. Lahoz, U. Langematz, E. Manzini, D. H. Rind, A. A. Scaife, K. Shibata, P. Simon, R. Swinbank, L. Takacs, R. J. Wilson, J. A. Al-Saadi, H. Amodei, M. Chiba, L. Coy, J. de Grandpré, R. S. Eckman, M. Fiorino, W. L. Grose, H. Koide, J. N. Koshyk, D. Li, J. Lerner, J. D. Mahlman, N. A. McFarlane, C. R. Mechoso, A. Molod, A. O'Neill, R. B. Pierce, W. J. Randel, R. B. Rood, and F. Wuh. 2000. "The GCM-Reality Intercomparison Project for SPARC (GRIPS): Scientific issues and initial results." Bull Amer Meteorol Soc, 81: 781-796.

    Waugh, D., W. Randel, S. Pawson, P. Newman, and E. Nash. 1999. "Persistence of the Lower Stratospheric Polar Vortices." J. Geophys. Res, 104:

    Non-Refereed

    Bosilovich, M. G., S. R. Akella, L. Coy, et al. R. I. Cullather, C. S. Draper, R. Gelaro, R. M. Kovach, Q. Liu, A. M. Molod, P. M. Norris, K. Wargan, C. Yang, R. H. Reichle, L. L. Takacs, Y. V. Vikhliaev, S. C. Bloom, A. Collow, S. Firth, G. J. Labow, G. S. Partyka, S. Pawson, O. Reale, S. D. Schubert, and M. J. Suarez. 2015. "MERRA-2: Initial Evaluation of the Climate." NASA Technical Report Series on Global Modeling and Data Assimilation 43 (NASA/TM–2015–10): 139 pp.

    Gelaro, R., W. M. Putman, S. Pawson, et al. C. S. Draper, A. M. Molod, P. M. Norris, L. E. Ott, N. C. Privé, O. Reale, D. Achuthavarier, M. G. Bosilovich, V. J. Buchard, W. C. Chao, L. Coy, R. I. Cullather, A. M. Da Silva, A. S. Darmenov, R. M. Errico, M. Fuentes, M.-J. Kim, R. D. Koster, W. R. Mccarty, J. Nattala, G. S. Partyka, S. D. Schubert, G. R. Vernieres, Y. V. Vikhliaev, and K. Wargan. 2015. "Evaluation of the 7-km GEOS-5 Nature Run." NASA Technical Report Series on Global Modeling and Data Assimilation 36 (NASA/TM-2014-104606):

    Brief Bio

    Steven Pawson is the Chief of the Global Modeling and Assimilation Ofifice at NASA Goddard Space Flight Center.  In this capacity, he is responsible for guiding a team of about 100 people who develop and use the "Goddard Earth Observing System" (GEOS) Earth System modeling and data assimilation system.  Versions of the GEOS system are used to expand the use of NASA's satellite observations to address topical problems in Earth Science, on timescales ranging from days to decades.


    Steven has worked primarily in the atmospheric sciences, with expertise in the domain of atmospheric transport and composition. He is author or co-author of more than 120 peer-reviewed publications. His early work focused on the stratosphere, including the ozone layer, and over time his interests have moved closer to the ground to include air pollution and the carbon cycle. Steven’s work has used a combination of observations and computer models. He was the founding co-lead of the GEOS Chemistry-Climate Model (CCM) project, in collaboration with the Atmospheric Chemistry and Dynamics Laboratory, which introduced chemical and emissions modules into the GEOS modeling system and conducted studies of ozone change and its interaction with climate. He contributed to ozone data assimilation projects in the GMAO, through which NASA’s EOS-Aura data were introduced into the GMAO's reanalyses. Through Steven’s long-standing collaboration with the Atmospheric Chemistry Modeling Group at Harvard University, the GEOS model is now being used to study tropospheric composition, including a prototype air-quality forecasting system. These chemical components now constitute an essential part of the GEOS Earth System Model. Steven also formulated and led the first “Carbon Data Assimilation” projects using the GEOS system, which led to close involvement in NASA’s OCO-2 mission.


    Steven moved to NASA GSFC in 1997. He has been a member of the GMAO since 2003 and a federal employee since 2005. Previously, he spent almost a decade at the Meteorological Institute of the Free University of Berlin in Germany, including six years on the teaching faculty, where he was awarded the "Habilitation" in the Faculty of Earth Sciences. He completed his education in the United Kingdom, with a Bachelor degree in Mathematics (1982) from the University of York, a Masters in Atmospheric Sciences (1984) from Imperial College/University of London, and a PhD in Meteorology (1988) from the University of Edinburgh. 


    Steven served for four years (2001-2005) as an Editor of the Journal of Geophysical Research - Atmospheres.  He was a co-lead author of Chapter 2 in the Scientific Assessment of Ozone Depletion: 2014. He frequently speaks to broad audiences of many ages about NASA’s activities in Earth Science.

     

    Publications

    Refereed

    Fujiwara, M., J. S. Wright, G. L. Manney, et al. L. J. Gray, J. Anstey, T. Birner, S. Davis, E. P. Gerber, V. L. Harvey, M. I. Hegglin, C. R. Homeyer, J. A. Knox, K. Krüger, A. Lambert, C. S. Long, P. Martineau, B. M. Monge-Sanz, M. L. Santee, S. Tegtmeier, S. Chabrillat, D. G. Tan, D. R. Jackson, S. Polavarapu, G. P. Compo, R. Dragani, W. Ebisuzaki, Y. Harada, C. Kobayashi, W. McCarty, K. Onogi, S. Pawson, A. Simmons, K. Wargan, J. S. Whitaker, and C.-Z. Zou. 2017. "Introduction to the SPARC Reanalysis Intercomparison Project (S-RIP) and overview of the reanalysis systems." Atmospheric Chemistry and Physics 1-52 [10.5194/acp-2016-652]

    Lim, Y.-K., S. D. Schubert, Y. Chang, A. M. Molod, and S. Pawson. 2017. "The impact of SST-forced and unforced teleconnections on 2015/16 El Nino winter precipitation over the western United States." Journal of Climate (Submitted)

    Wargan, K., G. Labow, S. Frith, et al. S. Pawson, N. Livesey, and G. Partyka. 2017. "Evaluation of the Ozone Fields in NASA’s MERRA-2 Reanalysis." Journal of Climate 30 (8): 2961–2988 [10.1175/jcli-d-16-0699.1]

    Gelaro, R., W. McCarty, M. J. Suárez, et al. R. Todling, A. Molod, L. Takacs, C. Randles, A. Darmenov, M. G. Bosilovich, R. Reichle, K. Wargan, L. Coy, R. Cullather, C. Draper, S. Akella, V. Buchard, A. Conaty, A. da Silva, W. Gu, G.-K. Kim, R. Koster, R. Lucchesi, D. Merkova, J. E. Nielsen, G. Partyka, S. Pawson, W. Putman, M. Rienecker, S. D. Schubert, M. Sienkiewicz, and B. Zhao. 2017. "The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2)." Journal of Climate 30 5419–5454 [10.1175/jcli-d-16-0758.1]

    Lim, Y.-K., R. M. Kovach, S. Pawson, and G. R. Vernieres. 2017. "The 2015/2016 El Nino event in context of the MERRA-2 reanalysis: A comparison of the tropical Pacific with 1982/1983 and 1997/1998." Journal of Climate 30 (13): 4819-4842 [10.1175/JCLI-D-16-0800.1]

    Coy, L., P. A. Newman, S. Pawson, and L. R. Lait. 2017. "Dynamics of the Disrupted 2015/16 Quasi-Biennial Oscillation." Journal of Climate 30 (15): 5661-5674 [10.1175/jcli-d-16-0663.1]

    Manney, G. L., M. I. Hegglin, Z. D. Lawrence, et al. K. Wargan, L. F. Millán, M. J. Schwartz, M. L. Santee, A. Lambert, S. Pawson, B. W. Knosp, R. A. Fuller, and W. H. Daffer. 2017. "Reanalysis comparisons of upper tropospheric–lower stratospheric jets and multiple tropopauses." Atmospheric Chemistry and Physics 17 (18): 11541-11566 [10.5194/acp-17-11541-2017]

    Orbe, C., L. D. Oman, S. E. Strahan, et al. D. W. Waugh, S. Pawson, L. L. Takacs, and A. M. Molod. 2017. "Large-Scale Atmospheric Transport in GEOS Replay Simulations." Journal of Advances in Modeling Earth Systems (In Press) [10.1002/2017ms001053]

    Lim, Y.-K., S. D. Schubert, R. M. Kovach, A. M. Molod, and S. Pawson. 2017. "The roles of climate change and climate variability in the 2017 Atlantic hurricane season." Geophysical Research Letters (Submitted)

    Nielsen, J. E., S. Pawson, A. Molod, et al. B. Auer, A. M. da Silva, A. R. Douglass, B. Duncan, Q. Liang, M. Manyin, L. D. Oman, W. Putman, S. E. Strahan, and K. Wargan. 2017. "Chemical Mechanisms and Their Applications in the Goddard Earth Observing System (GEOS) Earth System Model." Journal of Advances in Modeling Earth Systems [10.1002/2017ms001011]

    Aquila, V., W. H. Swartz, D. W. Waugh, et al. P. R. Colarco, S. Pawson, L. M. Polvani, and R. S. Stolarski. 2016. "Isolating the roles of different forcing agents in global stratospheric temperature changes using model integrations with incrementally added single forcings." J. Geophys. Res. Atmos. [10.1002/2015jd023841]

    Coy, L., K. Wargan, A. M. Molod, W. R. McCarty, and S. Pawson. 2016. "Structure and Dynamics of the Quasi-Biennial Oscillation in MERRA-2." J. Climate 29:14 5339-5354 [10.1175/jcli-d-15-0809.1]

    Li, F., Y. V. Vikhliaev, P. Newman, et al. S. Pawson, J. Perlwitz, D. W. Waugh, and A. R. Douglass. 2016. "Impacts of Interactive Stratospheric Chemistry on Antarctic and Southern Ocean Climate Change in the Goddard Earth Observing System - Version 5 (GEOS-5)." Journal of Climate 29 (9): 3199–3218 [10.1175/JCLI-D-15-0572.1]

    Olsen, M. A., K. Wargan, and S. Pawson. 2016. "Tropospheric column ozone response to ENSO in GEOS-5 assimilation of OMI and MLS ozone data." Atmos. Chem. Phys. 16 (11): 7091-7103 [10.5194/acp-16-7091-2016]

    Zeng, X., S. Ackerman, R. D. Ferraro, et al. T. J. Lee, J. J. Murray, S. Pawson, C. Reynolds, and J. Teixeira. 2016. "Challenges and Opportunities in NASA Weather Research." Bulletin of the American Meteorological Society 97 (7): ES137-ES140 [10.1175/bams-d-15-00195.1]

    Holt, L. A., M. Joan Alexander, L. Coy, et al. A. Molod, W. Putman, and S. Pawson. 2016. "Tropical waves and the quasi-biennial oscillation in a 7-km global climate simulation." Journal of the Atmospheric Sciences 73 3771–3783 [10.1175/jas-d-15-0350.1]

    Newman, P. A., L. Coy, S. Pawson, and L. R. Lait. 2016. "The anomalous change in the QBO in 2015-16." Geophysical Research Letters 43 [10.1002/2016gl070373]

    Wargan, K., S. Pawson, M. A. Olsen, et al. J. C. Witte, A. R. Douglass, J. R. Ziemke, S. E. Strahan, and J. E. Nielsen. 2015. "The Global Structure of Upper Troposphere-Lower Stratosphere Ozone in GEOS-5: A Multi-Year Assimilation of EOS Aura Data." J. Geophys. Res. - Atmos 120 2013-2036 [10.1002/2014JD022493]

    Ott, L. E., S. Pawson, G. J. Collatz, et al. W. W. Gregg, D. Menemenlis, H. Brix, C. S. Rousseaux, K. W. Bowman, J. Liu, A. Eldering, M. R. Gunson, and S. R. Kawa. 2015. "Assessing the magnitude of CO2 flux uncertainty in atmospheric CO2 records using products from NASA's Carbon Monitoring Flux Pilot Project." Journal of Geophysical Research - Atmospheres 120 734-765 [doi:10.1002/2014JD022411]

    Long, M. S., R. Yantosca, J. E. Nielsen, et al. C. A. Keller, A. da Silva, M. P. Sulprizio, S. Pawson, and D. J. Jacob. 2015. "Development of a grid-independent GEOS-Chem chemical transport model (v9-02) as an atmospheric chemistry module for Earth system models." Geosci. Model Dev. 8 (3): 595-602 [10.5194/gmd-8-595-2015]

    McGrath-Spangler, E. L., A. M. Molod, L. E. Ott, and S. Pawson. 2015. "Impact of planetary boundary layer turbulence on model climate and tracer transport." Atmos. Chem. Phys. 15 (13): 7269-7286 [10.5194/acp-15-7269-2015]

    Coy, L., and S. Pawson. 2014. "The major stratospheric sudden warming of January 2013: Analyses and forecasts in the GEOS-5 data assimilation." Mon. Wea. Rev 143 491-510 [10.1175/MWR-D-14-00023.1]

    Keller, C. A., M. S. Long, R. M. Yantosca, et al. A. M. Da Silva, S. Pawson, and D. J. Jacob. 2014. "HEMCO v1.0: a versatile, ESMF-compliant component for calculating emissions in atmospheric models." Geoscientific Model Development 7 (4): 1409-1417 [10.5194/gmd-7-1409-2014]

    Ziemke, J. R., M. A. Olsen, J. C. Witte, et al. A. R. Douglass, S. E. Strahan, K. Wargan, X. Liu, M. Schoeberl, K. Yang, T. Kaplan, S. Pawson, B. N. Duncan, P. Newman, P. K. Bhartia, and M. K. Heney. 2014. "Assessment and applications of NASA ozone data products derived from Aura OMI/MLS satellite measurements in context of the GMI chemical transport model." J. Geophys. Res. Atmos. 119 (9): 5671-5699 [10.1002/2013JD020914]

    Duncan, B. N., A. I. Prados, L. Lamsal, et al. Y. Liu, D. Streets, P. Gupta, E. Hilsenrath, R. A. Kahn, J. E. Nielsen, A. Beyersdorf, S. Burton, A. Fiore, J. Fishman, D. Henze, C. Hostetler, N. A. Krotkov, P. Lee, M. Lin, S. Pawson, G. Pfister, K. E. Pickering, R. B. Pierce, Y. Yoshida, and L. Ziemba. 2014. "Satellite data of atmospheric pollution for U.S. air quality applications: Examples of applications, summary of data end-user resources, answers to FAQs, and common mistakes to avoid." Atmospheric Environment 94 647-662 [10.1016/j.atmosenv.2014.05.061]

    Manney, G. L., M. I. Hegglin, W. H. Daffer, et al. M. J. Schwartz, M. L. Santee, and S. Pawson. 2014. "Climatology of Upper Tropospheric–Lower Stratospheric (UTLS) Jets and Tropopauses in MERRA." J. Climate 27 (9): 3248-3271 [10.1175/JCLI-D-13-00243.1]

    Liu, J., K. W. Bowman, M. Lee, et al. D. K. Henze, N. Bousserez, H. Brix, G. J. Collatz, D. Menemenlis, L. E. Ott, S. Pawson, D. Jones, and R. Nassar. 2014. "Carbon monitoring system flux estimation and attribution: impact of ACOS-GOSAT X CO₂ sampling on the inference of terrestrial biospheric sources and sinks." Tellus B 66 22486 [10.3402/tellusb.v66.22486]

    Palmer, P., M. Parrington, J. Lee, S. Pawson, and A. da Silva. 2013. "Quantifying the impact of BOReal forest fires on Tropospheric oxidants over the Atlantic using Aircraft and Satellites (BORTAS) experiment: design, execution and science overview." Atmos. Chem. Phys. 13 (13): 6239-6261 [10.5194/acp-13-6239-2013]

    Tangborn, A., L. L. Strow, B. Imbiriba, L. Ott, and S. Pawson. 2013. "Evaluation of a new middle-lower tropospheric CO₂ product using data assimilation." Atmos. Chem. Phys. 13 (9): 4487-4500 [10.5194/acp-13-4487-2013]

    Remsberg, E., M. Natarajan, T. Fairlie, et al. K. Wargan, S. Pawson, L. Coy, G. Lingenfelser, and G. Kim. 2013. "On the inclusion of Limb Infrared Monitor of the Stratosphere version 6 ozone in a data assimilation system." J. Geophys. Res. Atmos. 118 (14): 7982-8000 [10.1002/jgrd.50566]

    Strode, S. A., and S. Pawson. 2013. "Detection of carbon monoxide trends in the presence of interannual variability." Journal of Geophysical Research-Atmospheres 118 ( 21): 12257-122 [10.1002/2013JD020258]

    Li, F., D. Waugh, A. R. Douglass, et al. P. A. Newman, S. Pawson, R. S. Stolarski, S. E. Strahan, and J. E. Nielsen. 2012. "Seasonal variations of stratospheric age spectra in the Goddard Earth Observing System Chemistry Climate Model (GEOSCCM)." J. Geophys. Res. 117 (D5): D05134 [10.1029/2011JD016877]

    Allen, M., D. Erickson, W. Kendall, et al. J. Fu, L. Ott, and S. Pawson. 2012. "The influence of internal model variability in GEOS-5 on interhemispheric CO2 exchange." J. Geophys. Res. 117 (D10): D10107 [10.1029/2011JD017059]

    Li, F., D. W. Waugh, A. R. Douglass, et al. P. A. Newman, S. Pawson, R. S. Stolarski, S. E. Strahan, and J. E. Nielsen. 2012. "Seasonal variations of stratospheric age spectra in the Goddard Earth Observing System Chemistry Climate Model (GEOSCCM)." J. Geophys. Res 117 10.1029/2011JD016877

    Lang, C., D. W. Waugh, M. A. Olsen, et al. A. R. Douglass, Q. Liang, J. E. Nielsen, L. D. Oman, S. Pawson, and R. S. Stolarski. 2012. "The impact of greenhouse gases on past changes in tropospheric ozone." J Geophys Res 117 (D23): D23304 [10.1029/2012JD018293]

    Parazoo, N., A. Denning, S. R. Kawa, S. Pawson, and R. Lokupitiya. 2012. "CO2 flux estimation errors associated with moist atmospheric processes." Atmos. Chem. Phys. 12 (14): 6405-6416 [10.5194/acp-12-6405-2012]

    Strode, S. A., L. E. Ott, S. Pawson, and T. Bowyer. 2012. "Emission and transport of cesium-137 from boreal biomass burning in the summer of 2010." JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 117 [10.1029/2011JD017382]

    Wang, J., S. Pawson, B. Tian, et al. M.-C. Liang, R.-L. Shia, Y. L. Yung, and X. Jiang. 2011. "El Niño–Southern Oscillation in Tropical and Midlatitude Column Ozone." J. Atmos. Sci. 68 (9): 1911-1921 [10.1175/JAS-D-11-045.1]

    Ott, L., S. Pawson, and J. Bacmeister. 2011. "An analysis of the impact of convective parameter sensitivity on simulated global atmospheric CO distributions." J. Geophys. Res. 116 (D21): D21310 [10.1029/2011JD016077]

    Hardiman, S., N. Butchart, A. Charlton-Perez, et al. T. Shaw, H. Akiyoshi, A. Baumgaertner, S. Bekki, P. Braesicke, M. Chipperfield, M. Dameris, R. R. Garcia, M. Michou, S. Pawson, E. Roxanov, and K. Shibata. 2011. "Improved predictability of the troposphere using stratospheric final warmings." J. Geophys. Res. 116 (D18): D18113 [10.1029/2011JD015914]

    Rienecker, M. M., M. J. Suarez, R. Gelaro, et al. R. Todling, J. Bacmeister, E. Liu, M. G. Bosilovich, S. D. Schubert, L. Takacs, G.-K. Kim, S. Bloom, J. Chen, D. Collins, A. Conaty, A. da Silva, W. Gu, J. Joiner, R. D. Koster, R. Lucchesi, A. Molod, T. Owens, S. Pawson, P. Pegion, C. R. Redder, R. H. Reichle, F. R. Robertson, A. G. Ruddick, M. Sienkiewicz, and J. Woollen. 2011. "MERRA: NASA’s Modern-Era Retrospective Analysis for Research and Applications." J. Climate 24 (14): 3624-3648 [10.1175/JCLI-D-11-00015.1]

    Shaw, T. A., J. Perlwitz, N. Harnik, P. A. Newman, and S. Pawson. 2011. "The Impact of Stratospheric Ozone Changes on Downward Wave Coupling in the Southern Hemisphere." Journal of Climate 24 (16): 4210-4229 [10.1175/2011JCLI4170.1]

    Butchart, N., A. J. Charlton-Perez, I. Cionni, et al. S. C. Hardiman, P. H. Haynes, K. Krüger, P. J. Kushner, P. Newman, S. M. Osprey, J. Perlwitz, M. Sigmond, L. Wang, H. Akiyoshi, J. Austin, S. Bekki, A. Baumgaertner, P. Braesicke, C. Brühl, M. Chipperfield, M. Dameris, S. Dhomse, V. Eyring, R. Garcia, H. Gamy, P. Jöckel, J.-F. Lamarque, M. Marchand, M. Michou, O. Morgenstern, T. Nakamura, S. Pawson, D. Plummer, J. Pyle, E. Rozanov, J. Scinocca, T. G. Shepherd, K. Shibata, D. Smale, H. Teyssèdre, W. Tian, D. Waugh, and Y. Yamashita. 2011. "Multimodel climate and variability of the stratosphere." J. Geophys. Res. 116 (D5): D05102 [10.1029/2010JD014995]

    Liang, Q., J. M. Rodriguez, A. R. Douglass, et al. J. Crawford, E. Apel, H. Bian, D. Blake, W. Brune, M. Chin, P. R. Colarco, A. Silva, G. Diskin, B. N. Duncan, L. Huey, D. Knapp, D. Montzka, J. Nielsen, J. Olson, S. Pawson, D. Riemer, A. Weinheimer, and A. Wisthaler. 2011. "Reactive nitrogen, ozone and ozone production in the Arctic troposphere and the impact of stratosphere-troposphere exchange." Atmos. Chem. Phys. 11 (24): 13181-13199 [10.5194/acp-11-13181-2011]

    Allen, D. R., A. R. Douglass, G. L. Manney, et al. S. E. Strahan, J. C. Krosschell, J. V. Trueblood, J. E. Nielsen, S. Pawson, and Z. Zhu. 2011. "Modeling the Frozen-In Anticyclone in the 2005 Arctic Summer Stratosphere." Atmospheric Chemistry and Physics 11 4557-4576 [10.5194/acp-11-4557-2011]

    Gerber, E. P., M. P. Baldwin, H. Akiyoshi, et al. J. Austin, S. Bekki, P. Braesicke, N. Butchart, M. P. Chipperfield, M. Dameris, S. S. Dhomse, S. Frith, R. R. Garcia, H. Garny, A. Gettelman, S. C. Hardiman, O. Morgenstern, J. E. Nielsen, S. Pawson, T. Peter, D. A. Plummer, J. A. Pyle, E. Rozanov, J. F. Scinocca, T. G. Shepherd, and D. Smale. 2010. "Stratosphere-troposphere coupling and annular mode variability in chemistry-climate models." J. Geophys. Res. 115 (D3): D00M06 [10.1029/2009JD013770]

    Gettelman, A., M. I. Hegglin, S.-W. Son, et al. J. Kim, M. Fujiwara, T. Birner, S. Kremser, M. Rex, J. A. Anel, J. Austin, J. F. Lamarque, H. Akiyoshi, D. Plummer, T. G. Shepard, J. Scinocca, M. Michou, H. Teyssedre, M. Dameris, H. Garny, C. Brühl, P. Jockel, and S. Pawson. 2010. "Multimodel assessment of the upper troposphere and lower stratosphere: Tropics and global trends." J. Geophys. Res. 115 (D3): D00M08 [10.1029/2009JD013638]

    Jiang, J. H., H. Su, S. Pawson, et al. H.-C. Liu, W. Read, J. W. Waters, M. Santee, D. L. We, M. Schwarz, A. Lambert, R. Fuller, J. N. Lee, and N. Livesey. 2010. "Five year (2004–2009) observations of upper tropospheric water vapor and cloud ice from MLS and comparisons with GEOS-5 analyses." J. Geophys. Res. 115 (D15): D15103 [10.1029/2009JD013256]

    Charlton-Perez, A. J., E. Hawkins, V. Eyring, et al. I. Cionni, G. E. Bodeker, D. E. Kinnison, H. Akiyoshi, S. M. Frith, R. R. Garcia, A. Gettelman, J. F. Lamarque, T. Nakamura, S. Pawson, Y. Yamashita, S. Bekki, P. Braesicke, M. P. Chipperfield, S. Dhomse, M. Marchand, E. Mancini, O. Morgenstern, G. Pitari, D. Plummer, J. A. Pyle, E. Rozanov, J. Scinocca, K. Shibata, T. G. Shepherd, W. Tian, and D. W. Waugh. 2010. "The potential to narrow uncertainty in projections of stratospheric ozone over the 21st century." Atmos. Chem. Phys. 10 (19): 9473-9486 [10.5194/acp-10-9473-2010]

    Butchart, N., I. Cionni, V. Eyring, et al. T. G. Shepherd, D. W. Waugh, H. Akiyoshi, J. Austin, C. Brühl, M. P. Chipperfield, E. Cordero, M. Dameris, R. Deckert, S. Dhomse, S. M. Frith, R. R. Garcia, A. Gettelman, M. A. Giorgetta, D. E. Kinnison, F. Li, E. Mancini, C. McLandress, S. Pawson, G. Pitari, D. A. Plummer, E. Rozanov, F. Sassi, J. F. Scinocca, K. Shibata, B. Steil, and W. Tian. 2010. "Chemistry–Climate Model Simulations of Twenty-First Century Stratospheric Climate and Circulation Changes." J. Climate 23 (20): 5349-5374 [10.1175/2010JCLI3404.1]

    Li, F., R. S. Stolarski, S. Pawson, P. A. Newman, and D. Waugh. 2010. "Narrowing of the upwelling branch of the Brewer-Dobson circulation and Hadley cell in chemistry-climate model simulations of the 21st century." Geophys. Res. Lett 37

    Stolarski, R. S., A. R. Douglass, P. Newman, S. Pawson, and M. Schoeberl. 2010. "Relative Contribution of Greenhouse Gases and Ozone-Depleting Substances to Temperature Trends in the Stratosphere: A Chemistry–Climate Model Study." Journal of Climate 23 (1): 28-42 [10.1175/2009JCLI2955.1]

    Eyring, V., I. Cionni, G. Bodeker, et al. A. Charlton-Perez, D. Kinnison, J. Scinocca, D. Waugh, H. Akiyoshi, S. Bekki, M. Chipperfield, M. Dameris, S. Dhomse, S. M. Frith, H. Garny, A. Gettelman, A. Kubin, U. Langematz, E. Manicini, M. Marchand, T. Nakamura, L. D. Oman, S. Pawson, G. Pitari, D. Plummer, E. Rozanov, T. Shepherd, K. Shibata, W. Tian, P. Braesicke, S. Hardiman, J. F. Lamarque, O. Morgenstern, J. Pyle, D. Smale, and Y. Yamashita. 2010. "Multi-model assessment of stratospheric ozone return dates and ozone recovery in CCMVal-2 models." Atmos. Chem. Phys. 10 (19): 9451-9472 [10.5194/acp-10-9451-2010]

    Eyring, V., I. Cionni, J. Lamarque, et al. H. Akiyoshi, G. Bodeker, A. Charlton-Perez, S. Frith, A. Gettelman, D. Kinnison, T. Nakamura, L. Oman, S. Pawson, and Y. Yamashita. 2010. "Sensitivity of 21st century stratospheric ozone to greenhouse gas scenarios." Geophys Res Lett 37 (16): L16807 [10.1029/2010GL044443]

    Austin, J., J. Scinocca, D. Plummer, et al. L. D. Oman, D. Waugh, H. Akiyoshi, S. Bekki, P. Braesicke, N. Butchart, M. Chipperfield, D. Cugnet, A. Dameris, S. Dhomse, V. Eyring, S. M. Frith, R. Garcia, H. Garny, A. Gettelman, S. Hardiman, D. Kinnison, J. Lamarque, E. Mancini, M. Marchand, M. Michou, O. Morgenstern, T. Nakamura, S. Pawson, G. Pitari, J. Pyle, E. Rozanov, T. Shepherd, Q. Zhang, H. Teyssedre, R. Wilson, and Y. Yamashita. 2010. "Decline and recovery of total column ozone using a multimodel time series analysis." J Geophys Res 115 (D3): D00M10 [10.1029/2010JD013857]

    Li, F., R. S. Stolarski, S. Pawson, P. Newman, and D. Waugh. 2010. "Narrowing of the upwelling branch of the Brewer-Dobson circulation and Hadley cell in chemistry-climate model simulations of the 21st century." Geophys Res Lett 37 (13): L13702 [10.1029/2010GL043718]

    Ott, L., B. N. Duncan, S. Pawson, et al. P. Colarco, M. Chin, C. A. Randles, T. Diehl, and E. Nielsen. 2010. "Influence of the 2006 Indonesian biomass burning aerosols on tropical dynamics studied with the GEOS-5 AGCM." J Geophys Res 115 (D14): D14121 [10.1029/2009JD013181]

    Salawitch, R. J., T. Canty, T. Kurosu, et al. K. Chance, Q. Liang, A. M. Da Silva, S. Pawson, J. E. Nielsen, J. M. Rodriguez, and P. K. Bhartia. 2010. "A new interpretation of total column BrO during Arctic spring." Geophysical Research Letters 37 (21): L21805 [10.1029/2010GL043798]

    Wargan, K., S. Pawson, I. Stajner, and V. Thouret. 2010. "Spatial structure of assimilated ozone in the upper troposphere and lower stratosphere." J. Geophys. Res. 115 (D24): D24316 [10.1029/2010JD013941]

    Wang, H., D. J. Jacob, M. Kopacz, et al. D. B. Jones, P. Suntharalingam, J. A. Fisher, R. Nassar, and S. Pawson. 2009. "Error correlation between CO₂ and CO as constraint for CO₂ flux inversions using satellite data." Atmos. Chem. Phys. 9 (19): 7313-7323 [10.5194/acp-9-7313-2009]

    Tangborn, A., I. Stajner, M. Buchwitz, et al. I. Khlystova, S. Pawson, J. Burrows, R. Hudman, and P. Nedelec. 2009. "Assimilation of SCIAMACHY total column CO observations: Global and regional analysis of data impact." J. Geophys. Res. 114 (D7): D07307 [10.1029/2008JD010781]

    Manney, G. L., I. Stajner, M. Buchwitz, et al. I. Khlystova, S. Pawson, J. Burrows, R. Hudman, and P. Nedelec. 2009. "Aura Microwave Limb Sounder observations of dynamics and transport during the record-breaking 2009 Arctic stratospheric major warming." Geophys. Res. Lett. 36 (12): L12815 [10.1029/2009GL038586]

    Tangborn, A., R. Cooper, S. Pawson, and Z. Sun. 2009. "Chemical Source Inversion Using Assimilated Constituent Observations in an Idealized Two-Dimensional System." Mon. Weather Rev. 137 (9): 3013-3025 [10.1175/2009MWR2775.1]

    Ott, L. E., J. T. Bacmeister, S. Pawson, et al. K. E. Pickering, G. Stenchikov, M. J. Suarez, H. Huntreiser, M. Loewenstein, J. Lopez, and I. Xueref-Remy. 2009. "Analysis of Convective Transport and Parameter Sensitivity in a Single Column Version of the Goddard Earth Observation System, Version 5, General Circulation Model." J. Atmos. Sci. 66 (3): 627-646 [10.1175/2008JAS2694.1]

    Waugh, D. W., L. Oman, S. R. Kawa, et al. R. S. Stolarski, S. Pawson, A. R. Douglass, P. A. Newman, and J. E. Nielsen. 2009. "Impacts of climate change on stratospheric ozone recovery." Geophysical Research Letters 36 (3): L03805 [10.1029/2008GL036223]

    Newman, P., L. Oman, A. R. Douglass, et al. E. L. Fleming, S. M. Frith, M. M. Hurwitz, S. R. Kawa, C. H. Jackman, N. A. Krotkov, E. R. Nash, J. E. Nielsen, S. Pawson, R. S. Stolarski, and G. J. Velders. 2009. "What would have happened to the ozone layer if chlorofluorocarbons (CFCs) had not been regulated?" Atmos. Chem. Phys. 9 (6): 2113-2128 [10.5194/acp-9-2113-2009]

    Waugh, D. W., L. D. Oman, P. Newman, et al. R. S. Stolarski, S. Pawson, J. E. Nielsen, and J. Perlwitz. 2009. "Effect of zonal asymmetries in stratospheric ozone on simulated Southern Hemisphere climate trends." Geophys Res Lett 36 (18): L18701 [10.1029/2009GL040419]

    Fogt, R., J. Perlwitz, S. Pawson, and M. Olsen. 2009. "Intra-annual relationships between polar ozone and the SAM." Geophysical Research Letters 36 (4): L04707 [10.1029/2008GL036627]

    Oman, L., R. S. Stolarski, S. Pawson, D. W. Waugh, and P. Newman. 2009. "On the influence of anthropogenic forcings on changes in the stratospheric mean age." J. Geophys. Res. 114 (D3): D03105 [10.1029/2008JD010378]

    Manney, G., M. Schwartz, K. Kruger, et al. M. Santee, S. Pawson, J. N. Lee, and N. Livesey. 2009. "Aura Microwave Limb Sounder Observations of Dynamics and Transport During the Record-breaking 2009 Arctic Stratospheric Major Warming." Geophys Res Lett 36 (12): L12815 [10.1029/2009GL038586]

    Jiang, X., S. Pawson, C. D. Camp, et al. J. E. Nielsen, R.-L. Shia, T. Liao, V. Limpasuvan, and Y. L. Yung. 2008. "Interannual Variability and Trends of Extratropical Ozone. Part II: Southern Hemisphere." J. Atmos. Sci. 65 (10): 3030-3041 [10.1175/2008JAS2793.1]

    Perlwitz, J., S. Pawson, R. L. Fogt, J. E. Nielsen, and W. D. Neff. 2008. "Impact of stratospheric ozone hole recovery on Antarctic climate." Geophysical Research Letters 35 (8): L08714 [10.1029/2008GL033317]

    Son, S.-W., L. M. Polvani, D. W. Waugh, et al. H. Akiyoshi, R. Garcia, D. Kinnison, S. Pawson, E. Rozanov, T. G. Shepherd, and K. Shibata. 2008. "The Impact of Stratospheric Ozone Recovery on the Southern Hemisphere Westerly Jet." Science 320 (5882): 1486-1489 [10.1126/science.1155939]

    Schwartz, M. J., A. Lambert, G. L. Manney, et al. W. G. Read, N. J. Livesey, L. Froidevaux, C. O. Ao, P. F. Bernath, C. D. Boone, R. E. Cofield, W. H. Daffer, B. J. Drouin, E. J. Fetzer, R. A. Fuller, R. F. Jarnot, J. H. Jiang, B. W. Knosp, K. Krueger, J.-L. F. Li, M. G. Mlynczak, S. Pawson, J. M. Russell III, M. L. Santee, W. V. Snyder, P. C. Stek, R. P. Thurstans, A. M. Tompkins, P. A. Wagner, K. A. Walker, J. W. Waters, and D. L. Wu. 2008. "Validation of the Aura Microwave Limb Sounder temperature and geopotential height measurements." J. Geophys. Res. 113 (D15): D15S11 [10.1029/2007JD008783]

    Jiang, X., S. Pawson, C. D. Camp, et al. J. E. Nielsen, R.-L. Shia, T. Liao, V. Limpasuvan, and Y. L. Yung. 2008. "Interannual Variability and Trends of Extratropical Ozone. Part I: Northern Hemisphere." Journal of the Atmospheric Sciences 65 (10): 3013-3029 [10.1175/2008JAS2665.1]

    Manney, G. L., K. Krueger, S. Pawson, et al. M. J. Schwartz, W. H. Daffer, N. J. Livesey, M. G. Mlynczak, E. E. Remsberg, J. M. Russell III, and J. W. Waters. 2008. "The evolution of the stratopause during the 2006 major warming: Satellite data and assimilated meteorological analyses." J. Geophys. Res. 113 (D11): D11115 [10.1029/2007JD009097]

    Pawson, S., R. Stolarski, A. Douglass, et al. P. Newman, J. Nielsen, S. Frith, and M. Gupta. 2008. "Goddard Earth Observing System chemistry-climate model simulations of stratospheric ozone-temperature coupling between 1950 and 2005." J. Geophys. Res 113

    Stajner, I., K. Wargan, S. Pawson, et al. H. Hayashi, L. P. Chang, R. C. Hudman, L. Froidevaux, N. Livesey, P. Levelt, A. M. Thompson, D. W. Tarasick, R. Stuebi, S. B. Andersen, M. Yela, G. Koenig-Laslo, F. J. Schmidlin, and J. C. Witte. 2008. "Assimilated Ozone from EOS-Aura: Evaluation of the Tropopause Region and Tropospheric Columns." J. Geophys. Res.-Atmos. 113 D15S32 [doi:10.1029/2007JD008863]

    Oman, L., D. Waugh, S. Pawson, R. S. Stolarski, and J. E. Nielsen. 2008. "Understanding the Changes of Stratospheric Water Vapor in Coupled Chemistry–Climate Model Simulations." Journal of the Atmospheric Sciences 65 (10): 3278-3291 [10.1175/2008JAS2696.1]

    Pawson, S., R. S. Stolarski, A. R. Douglass, et al. P. A. Newman, J. E. Nielsen, S. M. Frith, and M. L. Gupta. 2008. "Goddard Earth Observing System chemistry-climate model simulations of stratospheric ozone temperature coupling between 1950 and 2005." J Geophy Res Atmos 113 (D12, D12103, doi:10):

    Limpasuvan, V., D. L. Wu, M. J. Alexander, et al. M. Hu, M. Xue, S. Pawson, and J. R. Perkins. 2007. "Stratospheric gravity wave simulation over Greenland during 24 January 2005." J. Geophys. Res. 112 (D10): D10115 [10.1029/2006JD007823]

    Miller, C. E., D. Crisp, P. C. de Cola, et al. S. C. Olsen, J. T. Randerson, A. Michalak, A. Alkhaled, P. Rayner, D. J. Jacob, P. Suntharalingam, D. B. Jones, A. S. Denning, M. E. Nicholls, S. C. Doney, and S. Pawson. 2007. "Precision requirements for space-based XCO₂ data." J. Geophys. Res. 112 (D10): D10314 [10.1029/2006JD007659]

    Manney, G. L., W. H. Daffer, J. M. Zawodny, et al. P. F. Bernath, K. W. Hoppel, K. A. Walker, B. W. Knosp, C. Boone, E. E. Remsberg, M. L. Santee, V. L. Harvey, S. Pawson, D. Jackson, L. Deaver, H. C. Pumphrey, A. Lambert, M. J. Schwartz, L. Froidevaux, S. McLeod, L. L. Takacs, M. J. Suarez, C. R. Trepte, D. C. Cuddy, N. J. Livesey, R. S. Harwood, and J. W. Waters. 2007. "Solar occultation satellite data and derived meteorological products: Sampling issues and comparisons with Aura Microwave Limb Sounder." J. Geophys. Res. 112 (D24): D24S50 [10.1029/2007JD008709]

    Pawson, S., I. Stajner, S. R. Kawa, et al. H. Hayashi, W. Tan, J. E. Nielsen, Z. Zhu, L.-P. Chang, and N. J. Livesey. 2007. "Stratospheric transport using 6-h-averaged winds from a data assimilation system." J. Geophys. Res. 112 (D23): D23103 [10.1029/2006JD007673]

    Stajner, I., C. Benson, H.-C. Liu, et al. S. Pawson, N. Brubaker, L.-P. Chang, L. P. Riishojgaard, and R. Todling. 2007. "Ice polar stratospheric clouds detected from assimilation of Atmospheric Infrared Sounder data." Geophys. Res. Lett 34 (16): L16802 [10.1029/2007GL029415]

    Eyring, V., D. W. Waugh, G. E. Bodeker, et al. E. Cordero, H. Akiyoshi, J. Austin, S. R. Beagley, B. A. Boville, P. Braesicke, C. Bruhl, N. Butchart, M. P. Chipperfield, M. Dameris, R. Deckert, M. Deushi, S. M. Frith, R. R. Garcia, A. Gettelman, M. A. Giorgetta, D. E. Kinnison, E. Mancini, E. Manzini, D. R. Marsh, S. Matthes, T. Nagashima, P. A. Newman, J. E. Nielsen, S. Pawson, G. Pitari, D. A. Plummer, E. Rozanov, M. Schraner, J. F. Scinocca, K. Semeniuk, T. G. Shepherd, K. Shibata, B. Steil, R. S. Stolarski, W. Tian, and M. Yoshiki. 2007. "Multimodel projections of stratospheric ozone in the 21st century." J. Geophys. Res. 112 (D16): D16303 [10.1029/2006JD008332]

    Charlton, A. J., L. M. Polvani, U. Perlwitz, et al. F. Sassi, E. Manzini, K. Shibata, S. Pawson, J. E. Nielsen, and D. Rind. 2007. "A New Look at Stratospheric Sudden Warmings. Part II: Evaluation of Numerical Model Simulations." J. Climate 20 (3): 470-488 [10.1175/JCLI3994.1]

    Pawson, S., I. Stajner, S. Kawa, et al. H. Hayasha, W. Tan, J. Nielsen, Z. Zhu, L. Chang, and N. Livesey. 2007. "Stratospheric transport using 6-h-averaged winds from a data assimilation system." J Geophys Res 112 (D23103): 1-12

    Morris, G., S. Hersey, A. M. Thompson, et al. O. R. Cooper, S. Pawson, E. Nielsen, P. R. Colarco, W. W. McMillan, A. Stohl, S. Turquety, J. Warner, B. J. Johnson, T. L. Kuscera, D. E. Larko, S. J. Oltmans, and J. C. Witte. 2006. "Alaskan and Canadian forest fires exacerbate ozone pollution over Houston, Texas, on 19 and 20 July 2004." J. Geophys. Res. 111 (D24): D24S03 [10.1029/2006JD007090]

    Stolarski, R. S., A. R. Douglass, S. Steenrod, and S. Pawson. 2006. "Trends in Stratospheric Ozone: Lessons Learned from a 3D Chemical Transport Model." J. Atmos. Sci. 63 (3): 1028-1041 [10.1175/JAS3650.1]

    Gaspari, G., S. E. Cohn, J. Guo, and S. Pawson. 2006. "Construction and application of covariance functions with variable length-fields." Q.J.R. Meteorol. Soc. 132 (619): 1815-1838 [10.1256/qj.05.08]

    Eyring, V., N. Butchart, D. W. Waugh, et al. H. Akiyoshi, J. Austin, S. Bekki, G. E. Bodeker, B. A. Boville, C. Bruhl, M. P. Chipperfield, E. Cordero, M. Dameris, M. Deushi, V. E. Fioletov, S. M. Frith, R. R. Garcia, A. Gettelman, M. A. Giorgetta, V. Grewe, L. Jourdain, D. E. Kinnison, E. Mancini, E. Manzini, M. Marchand, D. R. Marsh, T. Nagashima, P. Newman, J. E. Nielsen, S. Pawson, G. Pitari, D. A. Plummer, E. Rozanov, M. Schraner, T. G. Shepherd, K. Shibata, R. S. Stolarski, H. Struthers, W. Tian, and M. Yoshiki. 2006. "Assessment of temperature, trace species, and ozone in chemistry-climate model simulations of the recent past." J. Geophys. Res. 111 (D22): D22308 [10.1029/2006JD007327]

    Stolarski, R., A. Douglass, S. Steenrod, and S. Pawson. 2006. "Trends in stratospheric ozone: Lessons learned from a 3-D chemical transport model." J Atmos Sc 63 1028-1041

    Stajner, I., K. Wargan, L. Chang, et al. H. Hayashi, S. Pawson, and H. Nakajima. 2006. "Assimilation of ozone profiles from the Improved Limb Atmospheric Spectrometer-II: Study of Antarctic ozone." JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 111 (D11): [10.1029/2005JD006448]

    Stolarski, R. S., A. R. Douglass, M. Gupta, et al. P. A. Newman, S. Pawson, M. Schoeberl, and J. Nielsen. 2006. "An ozone increase in the Antarctic summer stratosphere: A dynamical response to the ozone hole." Geophys Res Lett 33 L21805 [10.1029/2006GL026820 ]

    Bian, H., S. R. Kawa, M. Chin, et al. S. Pawson, Z. Zhu, P. Rasch, and S. Wu. 2006. "A test of sensitivity to convective transport in a global atmospheric CO2 simulation." Tellus B 58 (5): 463-475 [10.1111/j.1600-0889.2006.00212.x]

    Manney, G. L., M. L. Santee, D. R. Allen, et al. K. Kruger, B. Naujokat, J. L. Sabutis, S. Pawson, R. Swinbank, C. E. Randall, A. J. Simmons, and C. Long. 2005. "Diagnostic Comparison of Meteorological Analyses during the 2002 Antarctic Winter." Mon. Weather Rev. 133 (5): 1261-1278 [10.1175/MWR2926.1]

    Manney, G. L., D. R. Allen, J. L. Sabutis, et al. W. A. Lahoz, A. A. Scaife, R. Swinbank, C. E. Randall, S. Pawson, B. Naujokat, and A. O'Neill. 2005. "Simulations of Dynamics and Transport during the September 2002 Antarctic Major Warming." J. Atmos. Sci. 62 (3): 690-707 [10.1175/JAS-3313.1]

    Manney, G. L., M. L. Santee, N. J. Livesey, et al. L. Froidevaux, W. G. Read, H. C. Pumphrey, J. W. Waters, and S. Pawson. 2005. "EOS Microwave Limb Sounder observations of the Antarctic polar vortex breakup in 2004." Geophysical Research Letters 32 (12): L12811 [10.1029/2005GL022823]

    Manney, G. L., K. Kruger, J. L. Sabutis, S. A. Sena, and S. Pawson. 2005. "The remarkable 2003–2004 winter and other recent warm winters in the Arctic stratosphere since the late 1990s." J. Geophys. Res. 110 (D4): D04107 [10.1029/2004JD005367]

    Eyring, V., N. Harris, M. Rex, et al. T. G. Shepherd, D. W. Fahey, G. T. Amanatidis, J. Austin, M. P. Chipperfield, M. Dameris, P. Forster, A. Gettelman, H. Graf, T. Nagashima, P. A. Newman, S. Pawson, M. J. Prather, J. A. Pyle, R. J. Salawitch, B. D. Santer, and D. W. Waugh. 2005. "A strategy for process-oriented validation of coupled chemistry-climate models." B. Amer. Met. Soc 86 (8): 1117-1133 [10.1175/BAMS-86-8-1117]

    Wargan, K., I. Stajner, S. Pawson, R. Rood, and W. Tan. 2005. "Assimilation of ozone data from the Michelson Interferometer for Passive Atmospheric Sounding." QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY 131 (611): [10.1256/qj.04.184]

    Ma, J., D. W. Waugh, A. R. Douglass, et al. S. R. Kawa, P. A. Newman, S. Pawson, R. S. Stolarski, and S. J. Lin. 2004. "Interannual variability of stratospheric trace gases: The role of extratropical wave driving." Q. J. R. Meteorol. Soc. 130 (602): 2459-2474 [10.1256/qj.04.28]

    Gupta, M., A. R. Douglass, S. R. Kawa, and S. Pawson. 2004. "Use of radon for evaluation of atmospheric transport models: sensitivity to emissions." Tellus B 56 (5): 404-412 [10.1111/j.1600-0889.2004.00124.x]

    Crisp, D., R. M. Atlas, F.-M. Breon, et al. L. R. Brown, J. P. Burrows, P. Ciais, B. J. Connor, S. C. Doney, I. Y. Fung, D. J. Jacob, C. E. Miller, D. O'Brien, S. Pawson, J. T. Randerson, P. Rayner, R. J. Salawitch, S. P. Sander, B. Sen, G. L. Stephens, and P. P. Tans. 2004. "The Orbiting Carbon Observatory (OCO) Mission." Adv. Space Res. 34 700-703 [Manuscript No. A1.2-0007-02]

    Randel, W., P. Udelhofen, E. Fleming, et al. M. Geller, M. Gelman, K. Hamilton, D. Karoly, D. Ortland, and S. Pawson. 2004. "The SPARC Intercomparison of Middle-Atmosphere Climatologies." J. Climate 17 (5): 986-1003 [10.1175/1520-0442(2004)017<0986:TSIOMC>2.0.CO;2]

    Tan, W. W., M. A. Geller, S. Pawson, and A. da Silva. 2004. "A case study of excessive subtropical transport in the stratosphere of a data assimilation system." J. Geophys. Res. 109 (D11): D11102 [10.1029/2003JD004057]

    Stajner, I., N. Winslow, R. B. Rood, and S. Pawson. 2004. "Monitoring of observation errors in the assimilation of satellite ozone data." J. Geophys. Res. 109 (D6): D06309 [10.1029/2003JD004118]

    Gupta, M. L., A. R. Douglass, S. R. Kawa, and S. Pawson. 2004. "Use of radon for evaluation of atmospheric transport models: sensitivity to emissions." Tellus Ser B - Chem and Phys. Meteor 56 404-412

    Kawa, S. R., D. J. Erickson III, S. Pawson, and Z. Zhu. 2004. "Global CO₂ transport simulations using meteorological data from the NASA data assimilation system." J. Geophys. Res. 109 (D18): D18312 [10.1029/2004JD004554]

    Ma, J., D. W. Waugh, A. R. Douglass, et al. S. R. Kawa, P. A. Newman, S. Pawson, R. S. Stolarski, S. J. Lin, and Q. J. Roy. 2004. "Interannual variability of stratospheric trace gases: The role of extratropical wave driving." Met. Soc 130 2459-2474

    Coy, L., I. Stajner, A. M. da Silva, et al. J. Joiner, R. B. Rood, P. Pawson, and S. J. Lin. 2003. "High-Frequency Planetary Waves in the Polar Middle Atmosphere as Seen in a Data Assimilation System." J. Atmos. Sci. 60 (24): 2975-2992 [10.1175/1520-0469(2003)060<2975:HPWITP>2.0.CO;2]

    Horinouchi, T., S. Pawson, K. Shibata, et al. U. Langematz, E. Manzini, M. A. Giorgetta, F. Sassi, R. J. Wilson, K. Hamilton, J. De Grandpre, and A. A. Scaife. 2003. "Tropical Cumulus Convection and Upward-Propagating Waves in Middle-Atmospheric GCMs." J. Atmos. Sci. 60 (22): 2765-2782 [10.1175/1520-0469(2003)060<2765:TCCAUW>2.0.CO;2]

    Schoeberl, M. R., A. R. Douglass, S. Pawson, and Z. Zhu. 2003. "A comparison of the lower stratospheric age spectra derived from a general circulation model and two data assimilation systems." J. Geophys. Res. 108 (D3): 4113 [10.1029/2002JD002652]

    Douglass, A. R., M. R. Schoeberl, R. B. Rood, and S. Pawson. 2003. "Evaluation of transport in the lower tropical stratosphere in a global chemistry and transport model." J. Geophys. Res. 108 (D9): 4259 [10.1029/2002JD002696]

    Austin, J., D. Shindell, S. R. Beagley, et al. C. Brühl, M. Dameris, E. Manzini, T. Nagashima, P. Newman, S. Pawson, G. Pitari, E. Rozanov, C. Schnadt, and T. G. Shepherd. 2003. "Uncertainties and assessments of chemistry-climate models of the stratosphere." Atmos. Chem. Phys. 3 (1): 1-27 [10.5194/acp-3-1-2003]

    Pawson, S., K. Kodera, K. Hamilton, et al. T. G. Shepherd, S. R. Beagley, B. A. Boville, J. D. Farrara, T. D. Fairlie, A. Kitoh, W. A. Lahoz, U. Langematz, E. Manzini, D. H. Rind, A. A. Scaife, K. Shibata, P. Simon, R. Swinbank, L. Takacs, R. J. Wilson, J. A. Al-Saadi, H. Amodei, M. Chiba, L. Coy, J. de Grandpré, R. S. Eckman, M. Fiorino, W. L. Grose, H. Koide, J. N. Koshyk, D. Li, J. Lerner, J. D. Mahlman, N. A. McFarlane, C. R. Mechoso, A. Molod, A. O'Neill, R. B. Pierce, W. J. Randel, R. B. Rood, and F. Wuh. 2000. "The GCM-Reality Intercomparison Project for SPARC (GRIPS): Scientific issues and initial results." Bull Amer Meteorol Soc 81 781-796.

    Waugh, D., W. Randel, S. Pawson, P. Newman, and E. Nash. 1999. "Persistence of the Lower Stratospheric Polar Vortices." J. Geophys. Res 104

    Non-Refereed

    Bosilovich, M. G., S. R. Akella, L. Coy, et al. R. I. Cullather, C. S. Draper, R. Gelaro, R. M. Kovach, Q. Liu, A. M. Molod, P. M. Norris, K. Wargan, C. Yang, R. H. Reichle, L. L. Takacs, Y. V. Vikhliaev, S. C. Bloom, A. Collow, S. Firth, G. J. Labow, G. S. Partyka, S. Pawson, O. Reale, S. D. Schubert, and M. J. Suarez. 2015. "MERRA-2: Initial Evaluation of the Climate." NASA Technical Report Series on Global Modeling and Data Assimilation 43 (NASA/TM–2015–10) 139 pp.

    Gelaro, R., W. M. Putman, S. Pawson, et al. C. S. Draper, A. M. Molod, P. M. Norris, L. E. Ott, N. C. Privé, O. Reale, D. Achuthavarier, M. G. Bosilovich, V. J. Buchard, W. C. Chao, L. Coy, R. I. Cullather, A. M. Da Silva, A. S. Darmenov, R. M. Errico, M. Fuentes, M.-J. Kim, R. D. Koster, W. R. Mccarty, J. Nattala, G. S. Partyka, S. D. Schubert, G. R. Vernieres, Y. V. Vikhliaev, and K. Wargan. 2015. "Evaluation of the 7-km GEOS-5 Nature Run." NASA Technical Report Series on Global Modeling and Data Assimilation 36 (NASA/TM-2014-104606):

                                                                                                                                                                                            
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