Sciences and Exploration Directorate

Jianjun Jin



Org Code: 610.1

Mail Code: 610.1
Greenbelt, MD 20771


Brief Bio

Jianjun Jin is a research scientist affiliated with Science Systems and Applications, Inc. (SSAI). He joined the Global Modeling and Assimilation Office (GMAO), GSFC, NASA in 2012. His research involves developing and improving assimilation of clouds, wind, and temperature measurements made by historical, operational, and new satellites within the Goddard Earth Observing System Model (GEOS) atmospheric data assimilation system. Prior to joining the GMAO, Jianjun Jin studied middle atmospheric chemistry and transport and stratosphere-troposphere exchange using satellite measurements and global climate models. He also studied tropospheric air pollution using various types of observations as well as trajectory and global chemistry transport models.


Chief Research Scientist (04/2023 - present), Lead Research Scientist (01/2019 - 03/2023)

Science Systems and Applications, Inc. (SSAI) - Greenbelt, Maryland

December 2019 - Present

Research Scientist II

GESTAR, Universities Space Research Association - Greenbelt, Maryland

February 2012 - December 2018

Postdoctoral Scholar

Jet Propulsion Laboratory (JPL), California Institute of Technology - Pasadena, California

May 2009 - January 2012

Research Associate

Department of Earth and Space Science and Engineering, York University (visiting Environment Canada, Air Quality Research Division) - Toronto, Ontario, Canada

February 2009 - April 2009

Post-Doctoral Fellow

Department of Physics, University of Toronto - Toronto, Ontario, Canada

August 2008 - January 2009


Ph.D. (2009), Earth and Space Sciences, York University, Toronto, Ontario, Canada.

B.Sc. (1998), M.Sc. (2001), Atmospheric Science, Lanzhou University, Gansu Province, China.

Professional Service

Jianjun Jin has served as a reviewer for papers submitted to Geophysical Research Letters (GRL), JGR-Atmospheres, Atmospheric Chemistry and Physics (ACP), and Quarterly Journal of the Royal Meteorological Society, as well as for proposals submitted for NASA ROSES solicitations.


  • "Scientific Support Award", GMAO, GSFC, 2022
  • "NASA Group Achievement Award" to MERRA-2 Science Team, NASA, 2019
  • "Outstanding Scientific Contribution By A New GMAO Member", GMAO, GSFC, 2015

Selected Publications


Lee, E., R. Todling, B. M. Karpowicz, et al. J. Jin, A. Sewnath, and S. K. Park. 2022. Assessment of Geo-Kompsat-2A Atmospheric Motion Vector Data and Its Assimilation Impact in the GEOS Atmospheric Data Assimilation System Remote Sensing 14 (21): 5287 [10.3390/rs14215287]

Kim, M.-J., J. Jin, A. El Akkraoui, et al. W. R. Mccarty, R. Todling, W. Gu, and R. Gelaro. 2020. The Framework for Assimilating All-Sky GPM Microwave Imager Brightness Temperature Data in the NASA GEOS Data Assimilation System Monthly Weather Review 148 2433-2455 [10.1175/MWR-D-19-0100.1]

Pu, Z., C. Yu, V. Tallapragada, J. Jin, and W. McCarty. 2019. The Impact of Assimilation of GPM Microwave Imager Clear-Sky Radiance on Numerical Simulations of Hurricanes Joaquin (2015) and Matthew (2016) with the HWRF Model Monthly Weather Review 147 (1): 175-198 [10.1175/mwr-d-17-0200.1]

Liu, G., J. J. Liu, D. W. Tarasick, et al. V. E. Fioletov, J. Jin, O. Moeni, X. Liu, and C. E. Sioris. 2013. A global tropospheric ozone climatology from trajectory-mapped ozone soundings Atmos. Chem. Phys. 13 (21): 10659-10675 [10.5194/acp-13-10659-2013]

Jin, J. J., N. J. Livesey, G. L. Manney, et al. J. H. Jiang, M. J. Schwartz, and W. H. Daffer. 2013. Chemical discontinuity at the extratropical tropopause and isentropic stratosphere-troposphere exchange pathways diagnosed using Aura MLS data JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 118 (9): 3832-3847 [10.1002/jgrd.50291]

Liu, J. J., D. Tarasick, V. Fioletov, et al. C. McLinden, T. Zhao, S. Gong, C. Sioris, J. Jin, G. Liu, and O. M. Najafabadi. 2013. A global ozone climatology from ozone soundings via trajectory mapping: a stratospheric perspective Atmos. Chem. Phys. 13 (22): 11441-11464 [10.5194/acp-13-11441-2013]

Jones, A., K. A. Walker, J. Jin, et al. J. R. Taylor, C. D. Boone, P. F. Bernath, G. L. Manney, S. McLeod, R. Hughes, and W. H. Daffer. 2012. Technical Note: A trace gas climatology derived from the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) data set Atmos. Chem. Phys. 12 (11): 5207-5220 [10.5194/acp-12-5207-2012]

Zhang, L., Q. B. Li, J. Jin, et al. H. Liu, N. Livesey, J. H. Jiang, Y. Mao, D. Chen, M. Luo, and Y. Chen. 2011. Impacts of 2006 Indonesian fires and dynamics on tropical upper tropospheric carbon monoxide and ozone Atmos. Chem. Phys. 11 (21): 10,929-10,946 [10.5194/acp-11-10929-2011]

Tarasick, D. W., J. Jin, V. E. Fioletov, et al. G. Liu, A. M. Thompson, S. J. Oltmans, C. E. Sioris, and X. Liu. 2010. High-resolution tropospheric ozone fields for INTEX and ARCTAS from IONS ozonesondes J. Geophys. Res. 115 (D20): D20301 [10.1029/2009JD012918]

Beagley, S. R., C. D. Boone, V. I. Fomichev, et al. J. Jin, K. Semeniuk, J. C. McConnell, and P. F. Bernath. 2010. First multi-year occultation observations of CO<sub>2</sub> in the MLT by ACE satellite: observations and analysis using the extended CMAM Atmos. Chem. Phys. 10 (3): 1133-1153 [10.5194/acp-10-1133-2010]

Dupuy, E., K. A. Walker, J. Kar, et al. C. D. Boone, C. T. McElroy, P. F. Bernath, J. R. Drummond, R. Skelton, S. D. McLeod, R. C. Hughes, C. R. Nowlan, D. G. Dufour, J. Zou, F. Nichitiu, K. Strong, P. Baron, R. M. Bevilacqua, T. Blumenstock, G. E. Bodeker, T. Borsdorff, A. E. Bourassa, H. Bovensmann, I. S. Boyd, A. Bracher, C. Brogniez, J. P. Burrows, V. Catoire, S. Ceccherini, S. Chabrillat, T. Christensen, M. T. Coffey, U. Cortesi, J. Davies, C. De Clercq, D. A. Degenstein, M. De Maziere, P. Demoulin, J. Dodion, B. Firanski, H. Fischer, G. Forbes, L. Froidevaux, D. Fussen, P. Gerard, S. Godin-Beekmann, F. Goutail, J. Granville, D. Griffith, C. S. Haley, J. W. Hannigan, M. Hopfner, J. Jin, A. Jones, N. B. Jones, K. Jucks, A. Kagawa, Y. Kasai, T. E. Kerzenmacher, A. Kleinbohl, A. R. Klekociuk, I. Kramer, H. Kullmann, J. Kuttippurath, E. Kyrola, J.-C. Lambert, N. J. Livesey, E. J. Llewellyn, N. D. Lloyd, E. Mahieu, G. L. Manney, B. T. Marshall, J. C. McConnell, M. P. McCormick, I. S. McDermid, M. McHugh, C. A. McLinden, J. Mellqvist, K. Mizutani, Y. Murayama, D. P. Murtagh, H. Oelhaf, A. Parrish, S. V. Petelina, C. Piccolo, J.-P. Pommereau, C. E. Randall, C. Robert, C. Roth, M. Schneider, C. Senten, T. Steck, A. Strandberg, K. B. Strawbridge, R. Sussmann, D. P. Swart, D. W. Tarasick, J. R. Taylor, C. Tetard, L. W. Thomason, A. M. Thompson, M. B. Tully, J. Urban, F. Vanhellemont, C. Vigouroux, T. von Clarmann, P. von der Gathen, C. von Savigny, J. W. Waters, J. C. Witte, M. Wolff, and J. M. Zawodny. 2009. Validation of ozone measurements from the Atmospheric Chemistry Experiment (ACE) Atmos. Chem. Phys. 9 (2): 287-343 [10.5194/acp-9-287-2009]

Jin, J., K. Semeniuk, S. R. Beagley, et al. V. I. Fomichev, A. I. Jonsson, J. C. McConnell, J. Urban, D. Murtagh, G. L. Manney, C. D. Boone, P. F. Bernath, K. A. Walker, B. Barret, P. Ricaud, and E. Dupuy. 2009. Comparison of CMAM simulations of carbon monoxide (CO), nitrous oxide (N<sub>2</sub>O), and methane (CH<sub>4</sub>) with observations from Odin/SMR, ACE-FTS, and Aura/MLS Atmos. Chem. Phys. 9 (10): 3233-3252 [10.5194/acp-9-3233-2009]

McConnell, J. C., and J. Jin. 2008. Stratospheric ozone chemistry Atmosphere-Ocean 46 (1): 69-92 [10.3137/ao.460104]

Semeniuk, K., J. C. McConnell, J. Jin, et al. J. R. Jarosz, C. D. Boone, and P. F. Bernath. 2008. N<sub>2</sub>O production by high energy auroral electron precipitation J. Geophys. Res. 113 (D16): D16302 [10.1029/2007JD009690]

Strong, K., M. A. Wolff, T. E. Kerzenmacher, et al. K. A. Walker, P. F. Bernath, T. Blumenstock, C. Boone, V. Catoire, M. Coffey, M. De Maziere, P. Demoulin, P. Duchatelet, E. Dupuy, J. Hannigan, M. Hopfner, N. Glatthor, D. W. Griffith, J. Jin, N. Jones, K. Jucks, H. Kuellmann, J. Kuttippurath, A. Lambert, E. Mahieu, J. C. McConnell, J. Mellqvist, S. Mikuteit, D. P. Murtagh, J. Notholt, C. Piccolo, P. Raspollini, M. Ridolfi, C. Robert, M. Schneider, O. Schrems, K. Semeniuk, C. Senten, G. P. Stiller, A. Strandberg, J. Taylor, C. Tetard, M. Toohey, J. Urban, T. Warneke, and S. Wood. 2008. Validation of ACE-FTS N₂O measurements Atmos. Chem. Phys. 8 (16): 4759-4786 [10.5194/acp-8-4759-2008]

Jin, J., K. Semeniuk, G. L. Manney, et al. A. I. Jonsson, S. R. Beagley, J. C. McConnell, C. P. Rinsland, C. D. Boone, K. A. Walker, and P. F. Bernath. 2006. Denitrification in the Arctic winter 2004/2005: Observations from ACE-FTS Geophysical Research Letters 33 (19): L19814 [10.1029/2006GL027687]

Jin, J., K. Semeniuk, G. L. Manney, et al. A. I. Jonsson, S. R. Beagley, J. C. McConnell, G. Dufour, R. Nassar, C. D. Boone, K. A. Walker, P. F. Bernath, and C. P. Rinsland. 2006. Severe Arctic ozone loss in the winter 2004/2005: observations from ACE-FTS Geophysical Research Letters 33 (15): [10.1029/2006GL026752]

Dufour, G., R. Nassar, C. D. Boone, et al. R. Skelton, K. A. Walker, P. F. Bernath, C. P. Rinsland, K. Semeniuk, J. Jin, J. C. McConnell, and G. L. Manney. 2006. Partitioning between the inorganic chlorine reservoirs HCl and ClONO₂ during the Arctic winter 2005 from the ACE-FTS Atmos. Chem. Phys. 6 (8): 2355-2366 [10.5194/acp-6-2355-2006]

Jin, J., K. Semeniuk, A. I. Jonsson, et al. S. R. Beagley, J. C. McConnell, C. D. Boone, K. A. Walker, P. F. Bernath, C. P. Rinsland, E. Dupuy, P. Ricaud, J. De La Noe, J. Urban, and D. Murtagh. 2005. Co-located ACE-FTS and Odin/SMR stratospheric-mesospheric CO 2004 measurements and comparison with a GCM Geophysical Research Letters 32 (15): L15S03 [10.1029/2005GL022433]