Dr. Robert F. Cahalan

Dr. Robert F. Cahalan

  • 301.614.5390
  • NASA/GSFC
  • Mail Code: 610
  • Greenbelt , MD 20771
  • Employer: EMERITUS
  • Brief Bio

    Dr. Robert F. Cahalan has been doing scientific research for more than 40 years, is a Fellow of the American Meteorological Society and a recipient of numerous awards for scientific research, including the United States Outstanding Leadership and Service Medal. Dr. Cahalan was the first Co-Director of the Sun-Climate Research Center at NASA’s Goddard Space Flight Center in Greenbelt Maryland, and recently retired as Chief of Goddard’s Climate and Radiation Laboratory. He is President Emeritus of the International Radiation Commission. He contributed to several Assessment Reports of the United Nations Intergovernmental Panel on Climate Change (IPCC), including the Fourth Assessment Report (AR4) that garnered the 2007 Nobel Prize. In 2006 Cahalan, with his wife Maggie Cahalan, and Joan Clement, co-founded the Chesapeake Education, Arts, and Research Society, CHEARS, a 501c3 non-profit dedicated to the health of all in the Chesapeake Watershed. 

    Research Interests

    Research Interests

    Dr. Cahalan's Ph.D. is in Quantum Field Theory. He published several papers in that area. During most of his long career he has researched and published papers on climate, energy, physics, radiative transfer, and remote sensing.

    Positions/Employment

    1/2015 - Present

    Senior Scientist,

    Johns Hopkins University Applied Research Laboratory, 11100 Johns Hopkins Rd, Laurel, MD 20723
    10/2003 - 1/2013

    Chief, Climate & Radiation Laboratory, Code 613

    NASA/GSFC, Greenbelt, MD 20771
    6/2009 - 1/2015

    Director, Sun Climate Research Center

    NASA/GSFC, Greenbelt, MD 20771
    3/1999 - 1/2015

    Project Scientist, NASA SORCE Mission

    NASA/GSFC, Greenbelt, MD 20771
    10/2010 - 1/2015

    Project Scientist, NASA-NOAA TSIS Mission - ISS

    NASA/GSFC, Greenbelt, MD 20771
    10/2008 - 1/2013

    President

    International Radiation Commission of IAMAS, Greenbelt, MD 20771
    6/2003 - 10/2006

    Chair, Observations Working Group, USGCRP

    Climate Change Science Program, 1717 Pennsylvania Avenue, Washington, D.C.
    6/1997 - 8/1998

    Visiting Senior Scientist

    ECMWF, European Centre for Medium-Range Weather Forecasting, Reading, UK
    6/1977 - 8/1979

    Sr. Postdoctoral Fellow

    National Center for Atmospheric Research (NCAR), Boulder, CO
    8/1973 - 8/1975

    Visiting Assistant Professor

    Physics Department, Syracuse University, Syracuse, New York
    3/1975 - 8/1975

    Visiting Scientist

    Institute of Theoretical Physics, National Academies of Science of USA and Poland, Warsaw, Poland

    Education

    1968 - BS. - Thomas More College, (Physics)
    1969 - MS. - University of Illinois-Urbana (Physics)
    1973 - Ph.D. - University of Illinois-Urbana (Physics)
     

    Professional Societies

    American Meteorological Society (Fellow), 1977 - Present
    American Geophysical Union, 1994 - Present
    American Physical Society, 1966 - Present
    European Geophysical Union, 1994 - Present

    Awards

    1966 Bendix Foundation Grant - Construct a plasma jet
    1966-1968 NSF Undergraduate Research Award - EPR
    1968-1969 Woodrow Wilson Fellow
    1969-1973 NSF Trainee
    1970 Brandeis Summer Institute in Theoretical Physics
    1973 Ettore Majorana, Int. School Subnuclear Physics
    1974 Aspen Center for Physics
    1975 National Academy of Sciences Exchange Fellow
    1977-1980 National Center Atmospheric Research Sr Fellow
    1982 NASA Quality Increase Award
    1992 NASA Group Achievement Award (FIRE)
    1994 NASA Quality Increase Award
    1994 NASA Scientific Achievement Award
    1995 NASA Outstanding Performance Award
    1996 NASA Quality Increase Award
    1996 NASA Exceptional Achievement Award
    1997 NASA Performance Award
    1997 NASA Study Fellowship
    1998 NASA Scientific Achievement Award
    2001 NASA Academy Mentor
    2002 Excellence in Technical Communications Award (Laser Focus World)
    2006 NOAA Outstanding Leadership Award
    2007 NASA Exceptional Service Gold Medal
    2008 Elected President of Int’l Radiation Commission
    2010 Elected Fellow of American Meteorological Soc.
     

    Special Experience

    CCSP-OWG
    Dr Cahalan worked since 2003 with the multi-agency "Climate Change Science Program " (CCSP) now using the earlier name “United States Global Climate Research Program” (USGCRP) where he was selected as Chair of the Observations Working Group (OWG), by the Principals of the 13 participating federal agencies, including NASA, NOAA, NSF, DOE, EPA, USGS, and several others. Dr. Cahalan's OWG is responsible for assessing the state of the U.S. part of the global Earth Observing System, and also works with the international Group on Earth Observations to define areas of future development. As chair, Dr. Cahalan brought together participants from all 13 federal agencies involved in making and using Earth observations. The OWG meets on second and fourth Tuesdays of every month, reports issues to the agency Principals, and also interacts with the National Research Council and non-federal users and partners in climate observing.

    NASA-EOS-SORCE
    Since 1999 Dr. Cahalan served as Project Scientist of the SOlar Radiation and Climate Experiment, which was successfully launched in January 2003, carries 4 instruments built by University of Colorado's LASP, and has collected now 10+ years of solar radiation data of unprecedented accuracy, precision and spectral coverage. Dr. Cahalan has worked to provide effective links between the Earth and Space sciences in this area, bringing onboard a Deputy, Doug Rabin, who heads the Solar Physics Branch at Goddard, and suggesting the appointment at NASA/HQ of a Earth/Space liaison, who was selected as Donald Anderson, now at NOAA. Dr. Cahalan worked with the SORCE PI Gary Rottman, who was elected Fellow of the AGU, and science team member Judith Lean of NRL, an elected member of the NAS, to organize several successful workshops that have brought together top scientists from both Earth and Space science to collaborate on the issue of the Sun's forcing of Earth's climate.


    IRC - 3DRT Working Group
    In 2000, Dr. Cahalan was elected to the International Radiation Commission (IRC) of the WMO, for his seminal work in 3-dimensional atmospheric radiative transfer. Dr. Cahalan formed a new "3DRT Working Group" that is now a standing committee of the IRC, building on his leadership of the International Intercomparison of 3D Radiative Codes that brought together participants from 32 research groups in 6 countries. Dr. Cahalan has organized several workshops in this area, co-funded by NASA and DOE. He also chairs special sessions on this topic at the International Radiation Symposia that take place every 4 years. In 2008 Dr Cahalan was elected President of the IRC, by vote of the 40 commissioners, representing 20 countries. Since then he has organized several IRC annual meetings taking place in the Americas, Europe, Asia, and Australia. He was principle organizer of the quadrennial International Radiation Symposium, at the Dahlem Cube in Berlin, in August 2012.
     

    Publications

    Refereed

    Wen, G., R. F. Cahalan, D. Rind, et al. J. Jonas, P. Pilewskie, D. L. Wu, and N. A. Krivova. 2017. "Climate responses to SATIRE and SIM-based spectral solar forcing in a 3D atmosphere-ocean coupled GCM." Journal of Space Weather and Space Climate, 7: A11 [10.1051/swsc/2017009]

    Lee, J. N., R. F. Cahalan, and D. Wu. 2016. "Solar Rotational Modulations of Spectral Irradiance and Correlations with the Variability of Total Solar Irradiance." J. Space Weather Space Climate, 6 (A33): [http://dx.doi.org/10.1051/swsc/2016028]

    Motesharrei, S., J. Rivas, E. Kalnay, et al. G. R. Asrar, A. J. Busalacchi, R. F. Cahalan, M. A. Cane, R. R. Colwell, K. Feng, R. S. Franklin, K. Hubacek, F. Miralles-Wilhelm, T. Miyoshi, M. Ruth, R. Sagdeev, A. Shirmohammadi, J. Shukla, J. Srebric, V. M. Yakovenko, and N. Zeng. 2016. "Modeling Sustainability: Population, Inequality, Consumption, and Bidirectional Coupling of the Earth and Human Systems." National Science Review, 3 (4): 470-494 [10.1093/nsr/nww081]

    Lee, J. N., R. F. Cahalan, and D. L. Wu. 2015. "The 27-Day Rotational Variations in Total Solar Irradiance Observations: from SORCE/TIM, ACRIM III, and SOHO/VIRGO ." Journal of Atmospheric and Solar-Terrestrial Physics, (132): 64-73 [10.1016/j.jastp.2015.07.001]

    Woods, T., R. F. Cahalan, W. Denig, et al. G. Kopp, P. Pilewskie, and T. Sparn. 2014. "Rapid coordination extends space-based sun-climate record." EOS, 95: 429-430 [10.1002/2014EO470002]

    Wen, G., A. Marshak, L. Remer, et al. R. Levy, N. Loeb, T. Várnai, and R. F. Cahalan. 2013. "Correction of MODIS aerosol retrieval for 3D radiative effects in broken cloud fields." [10.1063/1.4804761]

    Wen, G., R. F. Cahalan, D. Rind, et al. J. Jonas, P. Pilewskie, and J. Harder. 2013. "Spectral solar UV radiation and its variability and climate responses." [10.1063/1.4804888]

    Woods, T., G. Rottman, R. F. Cahalan, et al. J. Harder, G. Kopp, J. Lean, and M. Snow. 2013. "The SORCE mission celebrates ten years." The Earth Observer, 25 (1): 3-13.

    Wen, G., R. F. Cahalan, J. D. Haigh, et al. P. Pilewskie, L. Oreopoulos, and J. W. Harder. 2013. "Reconciliation of modeled climate responses to spectral solar forcing." J. Geophys. Res. Atmos., 118 (12): 6281–6289 [10.1002/jgrd.50506]

    Wen, G., A. Marshak, R. C. Levy, et al. L. A. Remer, N. Loeb, T. Varnai, and R. F. Cahalan. 2013. "Improvement of MODIS aerosol retrievals near clouds." J. Geophys. Res. Atmos., 118 (16): 9168-9181 [10.1002/jgrd.50617]

    Cahalan, R. F., and J. Fischer. 2013. "Radiation Processes in the Atmosphere and Ocean (IRS2012): Proceedings of the International Radiation Symposium (IRC/IAMAS)." 1531: http://scitation.aip.org/content/aip/proceeding/aipcp/1531: American Institute of Physics (AIP), 1-970, ISBN: 978-0-7354-1155-5. [Full Text (Link)] [10.1063/1.4804695]

    Sun, M., J. Li, C. Yang, et al. G. A. Schmidt, M. Bambacus, R. Cahalan, Q. Huang, C. Xu, E. U. Noble, and Z. Li. 2012. "A Web-Based Geovisual Analytical System for Climate Studies." Future Internet, 4 (4): 1069-1085 [10.3390/fi4041069]

    Pounder, N., R. Hogan, T. Varnai, A. Battaglia, and R. F. Cahalan. 2012. "A Variational Method to Retrieve the Extinction Profile in Liquid Clouds Using Multiple-Field-of-View Lidar." J Appl Meteor Climatol, 51 (2): 350-365 [10.1175/JAMC-D-10-05007.1]

    Cahalan, R. F., G. Wen, J. W. Harder, and P. Pilewskie. 2010. "Temperature responses to spectral solar variability on decadal time scales." Geophysical Research Letters, 37 (7): [10.1029/2009gl041898]

    Oreopoulos, L., S. E. Platnick, G. Hong, P. Yang, and R. F. Cahalan. 2009. "The Shortwave Radiative Forcing Bias of Homogeneous Liquid and Ice Clouds Observed by MODIS." [PowerPoint slides] Retrieved from Current Problems in Atmospheric Radiation (IRS 2008 Proceedings), [10.1063/1.3117049]

    Oreopoulos, L., S. Platnick, G. Hong, P. Yang, and R. Cahalan. 2009. "The shortwave radiative forcing bias of liquid and ice clouds from MODIS observations." Atmos. Chem. Phys., 9 (16): 5865-5875 [10.5194/acp-9-5865-2009]

    Wen, G., A. Marshak, and R. F. Cahalan. 2008. "Importance of molecular Rayleigh scattering in the enhancement of clear sky radiance in the vicinity of boundary layer cumulus clouds." J. Geophys. Res., 113: [10.1029/2008JD010592]

    Miyahara, H., G. Wen, R. F. Cahalan, and A. Ohmura. 2008. "Deriving historical total solar irradiance from lunar borehole temperatures." Geophys. Res. Lett., 35: [10.1029/2007GL032171]

    Marshak, A., G. Wen, J. Coakley, et al. L. Remer, N. Loeb, and R. F. Cahalan. 2008. "A simple model for the cloud adjacency effect and the apparent bluing of aerosols near clouds." J. Geophys. Res., 113: [10.1029/2007JD009196]

    Sud, Y. C., G. K. Walker, Y. Zhou, et al. G. A. Schmidt, W. K. Lau, and R. F. Cahalan. 2008. "Effects of doubled CO2 on tropical sea surface temperatures (SSTs) for onset of deep convection and maximum SST: Simulations based inferences." Geophysical Research Letters, 35 (12): L12707 [10.1029/2008GL033872]

    Wen, G., A. Marshak, R. F. Cahalan, L. Remer, and R. G. Kleidman. 2007. "3D aerosol-cloud radiative interaction observed in collocated MODIS and ASTER images of cumulus cloud fields." J. Geophys. Res., 112: [10.1029/2005JD006686 ]

    Oreopoulos, L., R. Cahalan, and S. Platnick. 2007. "The Plane-Parallel Albedo Bias of Liquid Clouds from MODIS Observations." J. Climate, 20 (20): 5114-5125 [10.1175/JCLI4305.1]

    Varnai, T., and R. F. Cahalan. 2007. "Potential for airborne offbeam lidar measurements of snow and sea ice thickness." J. Geophys. Res., 112 (C12): C12S90 [10.1029/2007JC004091]

    Oreopoulos, L., A. Marshak, R. F. Cahalan, et al. T. Varnai, A. B. Davis, and A. Macke. 2006. "New directions in the radiative transfer of cloudy atmospheres." Eos Trans. AGU, 87 (5): 52 [10.1029/2006EO050006]

    Wen, G., A. Marshak, and R. Cahalan. 2006. "Impact of 3D Clouds on Clear Sky Reflectance and Aerosol Retrieval in a Biomass Burning Region of Brazil." IEEE Geo Rem Sens Lett, 3: 169-172 [10.1109/LGRS.2005.861386]

    Marshak, A., S. E. Platnick, T. Varnai, G. Wen, and R. F. Cahalan. 2006. "Impact of three-dimensional radiative effects on satellite retrievals of cloud droplet sizes." J. Geophys. Res., 111 (D9): D09207 [10.1029/2005JD006686]

    Cahalan, R. F. 2005. "Effective Cloud Properties for Large-Scale Models, Chapter 8, in Three-dimensional Radiative Transfer in Cloudy Atmospheres." Springer, ISBN: 978-3-540-28519-9. [10.1007/3-540-28519-9]

    Anderson, D., and R. F. Cahalan. 2005. "The Solar Radiation and Climate Experiment (SORCE) Mission for the NASA Earth Observing System (EOS)." Solar Phys, 230 (1): 3-6 [10.1007/s11207-005-1592-6]

    Cahalan, R., L. Oreopoulos, A. Marshak, et al. K. Evans, A. Davis, R. Pincus, K. Yetzer, B. Mayer, R. Davies, T. Ackerman, H. Barker, E. Clothiaux, R. Ellingson, M. Garay, E. Kassianov, S. Kinne, O. Macke, O. Macke, O. Macke, P. Partain, S. Prigarin, A. Rublev, G. Stephens, F. Szczap, E. Takara, T. Varnai, G. Wen, and T. Zhuravleva. 2005. "The International Intercomparison of 3D Radiation Codes (I3RC): Bringing together the most advanced radiative transfer tools for cloudy atmospheres." Bull Amer Meteor Soc, 86 (9): 1275-1293 [10.1175/BAMS-86-9-1275]

    Oreopoulos, L., and R. Cahalan. 2005. "Cloud Inhomogeneity from MODIS." J. Climate, 18 (23): 5110-5124 [10.1175/JCLI3591.1]

    Cahalan, R. F., M. J. Mcgill, J. Kolasinski, T. Varnai, and K. Yetzer. 2005. "THOR—Cloud Thickness from Offbeam Lidar Returns." Journal of Atmospheric and Oceanic Technology, 22 (6): 605-627 [10.1175/JTECH1740.1]

    Oreopoulos, L., M. Chou, M. Khairoutdinov, H. Barker, and R. Cahalan. 2004. "Performance of Goddard Earth Observing System GCM column radiation models under heterogeneous cloud conditions." Atmospheric Research, 72: 365-382 [10.1016/j.atmosres.2004.03.025]

    Wen, G., R. F. Cahalan, and B. N. Holben. 2003. "Limitations of ground-based solar irradiance estimates due to atmospheric variations." J. Geophys. Res., 108: [10.1029/2003JD003431]

    Oreopoulos, L., A. Marshak, and R. Cahalan. 2003. "Consistency of ARESE II cloud absorption estimates and sampling issues." J. Geophys. Res., 108 (D1): 4029 [10.1029/2002JD002243]

    Rozwadowska, A., and R. Cahalan. 2002. "Plane-parallel biases computed from inhomogeneous clouds and sea ice." J Geophys Res, 107: 4384-4401 [10.1029/2002JD002092]

    Davis, A., S. Love, R. Cahalan, and M. McGill. 2002. "Off-beam Lidar senses cloud thickness and density." Laser Focus World, October Issue: 38 [ 101-103]

    Davis, A. B., R. F. Cahalan, and A. Marshak. 2001. "Green functions for multiple scattering as mathematical tools for dense cloud remote sensing: theory, with passive and active applications, in Laser Radar Technology and Applications VI." SPIE-International Society for Optical Engineering, ISBN: 978-0819440723.

    Wen, G., R. Cahalan, S.-C. Tsay, and L. Oreopoulos. 2001. "Impact of cumulus cloud spacing on Landsat atmospheric correction and aerosol retrieval." J. Geophys. Res., 106 (D11): 12129-12138 [10.1029/2001JD900159]

    DeFelice, T., and R. F. Cahalan. 2001. "Reply to Comment on 'Landsat 7 reveals more than just surface features in remote areas of the globe' by L. Hubert." Bull Amer Meteor Soc, 82 (2): 314-314 [10.1175/1520-0477(2001)082<0314:REPLY>2.3.CO;2]

    Cahalan, R. F., L. Oreopoulos, G. Wen, et al. A. Marshak, S.-C. Tsay, and T. DeFelice. 2001. "Cloud characterization and clear sky correction from Landsat 7." Remote Sens Environ, 78 (1-2): 83-98 [10.1016/S0034-4257(01)00251-6]

    DeFelice, T., J. Meyer, G. Xian, J. Christopherson, and R. Cahalan. 2000. "Landsat 7 reveals more than just surface features in remote areas of the globe." Bull Amer Meteor Soc, 81: 1047-1049 [10.1175/1520-0477(2000)081<1047:CAA>2.3.CO;2]

    Oreopoulos, L., A. Marshak, R. F. Cahalan, and G. Wen. 2000. "Cloud three-dimensional effects evidenced in Landsat spatial power spectra and autocorrelation functions." J Geophys Res, 105 (D11): 14777-14788 [10.1029/2000JD900153]

    Oreopoulos, L., R. F. Cahalan, A. Marshak, and G. Wen. 2000. "A new normalized difference cloud retrieval technique applied to Landsat radiances over the Oklahoma ARM Site." J Appl Meteor, 39 (12): 2305-2320 [10.1175/1520-0450(2000)039<2305:ANNDCR>2.0.CO;2]

    Wen, G., S.-C. Tsay, R. F. Cahalan, and L. Oreopoulos. 1999. "Path radiance technique for retrieving aerosol optical thickness over land." J. Geophys. Res., 104 (D24): 31321-31332 [10.1029/1999JD900964]

    Marshak, A., W. Wiscombe, A. Davis, L. Oreopoulos, and R. Cahalan. 1999. "On the Removal of the Effect of Horizontal Fluxes In Two-Aircraft Measurements of Cloud Absorption." Q.J Royal Met. Soc., 125 (558): 2153-2170 [10.1002/qj.49712555811]

    Marshak, A., L. Oreopoulos, A. Davis, W. Wiscombe, and R. Cahalan. 1999. "Horizontal radiative fluxes in clouds and accuracy of the independent pixel approximation at absorbing wavelengths." Geophys. Res. Lett., 26 (11): 1585-1588 [10.1029/1999GL900306]

    Davis, A. B., R. F. Cahalan, J. D. Spinhirne, M. J. Mcgill, and S. P. Love. 1999. "Off-beam lidar: An emerging technique in cloud remote sensing based on radiative Green-function theory in the diffusion domain." Phys Chem Earth - B, 24: 177-185 [10.1016/S1464-1909(99)00077-5]

    Davis, A. B., A. Marshak, R. F. Cahalan, and W. J. Wiscombe. 1998. "Insight into three-dimensional radiation transport from diffusion theory, application to the cloudy atmosphere, in Radiative Transfer." New York, NY: Begell House [10.1615/ICHMT.1997.IntSymLiqTwoPhaseFlowTranspPhen]

    Marshak, A., A. Davis, W. J. Wiscombe, and R. F. Cahalan. 1998. "Radiative effects of sub-mean-free-path liquid water variability observed in stratiform clouds." J. Geophys. Res., 103: 19557-19567 [10.1029/98JD01728]

    Marshak, A., A. Davis, R. F. Cahalan, and W. J. Wiscombe. 1998. "Nonlocal Independent Pixel Approximation, direct and inverse problems." IEEE Trans. Geosci. Remote Sens., 36: [10.1109/36.655329]

    Marshak, A., A. Davis, W. J. Wiscombe, W. Ridgway, and R. F. Cahalan. 1998. "Biases in shortwave column absorption in the presence of fractal clouds." J. Climate, 11: 431-446 [10.1175/1520-0442(1998)011<0431:BISCAI>2.0.CO;2]

    Davis, A. B., A. Marshak, R. F. Cahalan, and W. J. Wiscombe. 1997. "Evidence for net horizontal radiative fluxes in marine stratocumulus, in IRS '96: Current Problems in Atmospheric Radiation." Deepak Publishing, ISBN: 0-937194-39-5.

    Davis, A. B., D. Winker, A. Marshak, et al. J. Spinhirne, R. F. Cahalan, S. Love, H. Melfi, and W. J. Wiscombe. 1997. "Retrieval of physical and optical cloud thicknesses from space-borne and wide-angle lidar, in Advances inn Atmospheric Remote Sensing with Lidar." Springer-Verlag, ISBN: 978-3-642-60612-0. [10.1007/978-3-642-60612-0]

    Marshak, A., A. B. Davis, R. F. Cahalan, and W. J. Wiscombe. 1997. "Physical simulation of high resolution satellite images for fractal cloud models, in Fractal Frontiers." World Scientific, ISBN: 978-9810231552.

    Marshak, A., A. B. Davis, R. F. Cahalan, and W. J. Wiscombe. 1997. "The effect of horizontal fluxes on cloud absorption estimates based on simulated two-aircraft measurements of fractal clouds, in IRS '96: Current Problems in Atmospheric Radiation." Deepak Publishing, ISBN: 0-937194-39-5.

    Marshak, A., A. B. Davis, R. F. Cahalan, and W. J. Wiscombe. 1997. "Nonlocal Independent Pixel Approximation for computing radiation fields of inhomogeneous clouds, in IRS '96: Current Problems in Atmospheric Radiation." Deepak Publishing, ISBN: 0-937194-39-5.

    Cahalan, R. F., A. B. Davis, A. Marshak, D. S. Silberstein, and W. J. Wiscombe. 1997. "Cloud Macrostructure and Radiation, in Remote Sensing: A Scientific Vision for Sustainable Development." IEEE Operations Center P . 0 . B o x 1331 445 Hoes Lane Piscataway, NJ 00055-1331 UBA: IEEE, ISBN: 0-7003-3037-5. [10.1109/IGARSS.1997.608888]

    Marshak, A., A. Davis, W. J. Wiscombe, and R. F. Cahalan. 1997. "Scale-invariance of liquid water distributions in marine stratocumulus. II. Multifractal properties and intermittency issues." J. Atmos. Sci., 54: 1423-1444 [10.1175/1520-0469(1997)054<1423:SIILWD>2.0.CO;2]

    Marshak, A., A. Davis, W. J. Wiscombe, and R. F. Cahalan. 1997. "Inhomogeneity effects on cloud shortwave absorption measurements: Two-aircraft simulations." J. Geophys. Res., 102: 16619-16637 [10.1029/97JD01153]

    Davis, A., A. Marshak, R. F. Cahalan, and W. J. Wiscombe. 1997. "The Landsat scale break in stratocumulus as a three-dimensional radiative transfer effect: Implications for cloud remote sensing." J. Atmos. Res., 54: 241-260 [10.1175/1520-0469(1997)054<0241:TLSBIS>2.0.CO;2]

    Davis, A., A. Marshak, R. F. Cahalan, and W. J. Wiscombe. 1997. "Interactions, solar and Laser beams in stratus clouds, fractals and multifractals in climate and remote sensing studies." Fractals, 5: 129-166.

    Marshak, A., A. B. Davis, W. J. Wiscombe, and R. F. Cahalan. 1996. "Multifractal characterizations of intermittency in nonstationary geophysical signals and fields, in Nonstationary Random Processes and Their Applications." World Scientific.

    Davis, A., A. Marshak, W. J. Wiscombe, and R. F. Cahalan. 1996. "Scale-invariance of liquid water distributions in marine stratocumulus. I. Spectral properties and stationarity issues." J. Atmos. Sci., 53: 1538-1558 [10.1175/1520-0469(1996)053<1538:SIOLWD>2.0.CO;2]

    Cahalan, R. F., L. Wharton, and M.-L. Wu. 1996. "Empirical Orthogonal Functions of monthly temperature and precipitation over the United States and homogeneous stochastic models ." J. Geophys. Res., 101: 26309-26318 [10.1029/96JD01611]

    Cahalan, R. F., and L. Green. 1996. "Review of "Introduction to Circulating Atmospheres" by I. James." Amer. Sci., 84: 602-603.

    Marshak, A., A. Davis, W. J. Wiscombe, and R. F. Cahalan. 1995. "Radiative smoothing in fractal clouds." J. Geophys. Res., 100: 26247-26261 [10.1029/95JD02895]

    Gollmer, S., H. Harshvardhan, R. F. Cahalan, and J. Snider. 1995. "Windowed and wavelet analysis of marine stratocumulus cloud inhomogeneity." J. Geophys. Res., 52: 3013-3030 [10.1175/1520-0469(1995)052<3013:WAWAOM>2.0.CO;2]

    Cahalan, R. F., D. S. Silberstein, and J. Snider. 1995. "Liquid water path and plane-parallel albedo bias during ASTEX." J. Atmos. Sci., 52: 3002-3012 [10.1175/1520-0469(1995)052<3002:LWPAPP>2.0.CO;2]

    Marshak, A., A. Davis, W. J. Wiscombe, and R. F. Cahalan. 1994. "Bounded Cascade Models as non-stationary multifractals." Phys. Rev., E49: 55-69 [10.1103/PhysRevE.49.55]

    Davis, A., A. Marshak, W. J. Wiscombe, and R. F. Cahalan. 1994. "Multifractal characterizations of non-stationarity and intermittency in geophysical fields: Observed, retrieved, or simulated." J. Geophys. Res., 99: 8055-8072 [10.1029/94JD00219]

    Cahalan, R. F. 1994. "Bounded cascade clouds - albedo and effective thickness." Nonlinear Proc. Geophys., 1: 156-167 [10.5194/npg-1-156-1994]

    Cahalan, R. F., W. L. Ridgway, W. J. Wiscombe, S. Gollmer, and Harshvardhan. 1994. "Independent pixel and Monte Carlo estimates of stratocumulus albedo." J. Atmos. Sci, 51: 3776-3790 [10.1175/1520-0469(1994)051<3776:IPAMCE>2.0.CO;2]

    Cahalan, R. F., W. L. Ridgway, W. J. Wiscombe, T. L. Bell, and J. B. Snider. 1994. "The albedo of fractal stratocumulus clouds." J. Atmos. Sci, 51: 2434-2455 [10.1175/1520-0469(1994)051<2434:TAOFSC>2.0.CO;2]

    Cahalan, R. F. 1993. "Analytic variance spectrum for empirical orthogonal functions, in Precipitation Variability and Climate Change, Proceedings of Symposium on Precipitation and Evaporation (Vol 2)." Bratislava, Slovakia: Slovak Hydrometeorological Service.

    Cahalan, R. F., and W. J. Wiscombe. 1993. "Impact of cloud structure on climate, in IRS '92: Current Problems in Atmospheric Radiation." Deepak Publishing, ISBN: 0-937194-28-X.

    Marshak, A., A. Davis, R. F. Cahalan, and W. J. Wiscombe. 1993. "Multi-singular and multi-affine properties of Bounded Cascade Models." Fractals, 3: 702-710.

    Cahalan, R. F. 1992. "Kuwait oil fires as seen by Landsat." J. Geophys. Res., 97: 14565-14571 [10.1029/92JD00799]

    Cahalan, R. F. 1991. "Landsat observations of fractal cloud structure, in Nonlinear Variability in Geophysics." Springer Netherlands, ISBN: 978-94-009-2147-4. [10.1007/978-94-009-2147-4]

    Joseph, J., and R. F. Cahalan. 1990. "Nearest-neighbor spacing in fair weather cumulus." J. Appl. Meteor., 29: 793-805 [10.1175/1520-0450(1990)029<0793:NNSOFW>2.0.CO;2]

    Cioffi, D., R. F. Cahalan, and D. T. Leisawitz. 1990. "Turbulence in an IRAS Cirrus Cloud." Bull. Amer. Astro. Soc., 22: 1246-1247.

    Cahalan, R. F., H. Leidecker, and G. Cahalan. 1990. "Chaotic rhythms of a dripping faucet." Computers in Physics, 4: 368-383 [10.1063/1.4822928]

    Cahalan, R. F., M. Nestler, W. L. Ridgway, W. J. Wiscombe, and T. L. Bell. 1989. "Marine stratocumulus spatial structure, in Proceedings of the Fourth International Conference on Statistical Climatology." http://imsc.pacificclimate.org/history.shtml: International Meetings on Statistical Climatology.

    Cahalan, R. F. 1989. "Overview of fractal clouds, in IRS '88: Current Problems in Atmospheric Radiation." Hampton, VA: Deepak Publishing, ISBN: 0-937194-16-6.

    Cahalan, R. F., and J. H. Joseph. 1989. "Fractal statistics of cloud fields." Mon. Wea. Rev., 261-272 [10.1175/1520-0493(1989)117<0261:FSOCF>2.0.CO;2]

    Cahalan, R. F., and J. B. Snider. 1989. "Marine stratocumulus structure." Remote Sens. Environ., 95-107 [10.1016/0034-4257(89)90108-9]

    Cahalan, R. F. 1986. "Nearest neighbor spacing distributions of cumulus clouds, in Proceedings of Third International Conference on Statistical Climatology." http://imsc.pacificclimate.org/history.shtml: International Meetings on Statistical Climatology.

    Cahalan, R. F., and L. S. Chiu. 1986. "Large-scale short-period sea ice-atmosphere interaction." J. Geophys. Res., 10709-10717 [10.1029/JC091iC09p10709]

    Cahalan, R. F. 1983. "EOF spectral estimation in climate analysis, in Proceedings of Second International Meeting on Statistical Climatology (pp. 4.5.1-4.5.7)." Lisbon, Portugal: National Institute of Meteorology and Geophysics.

    Short, D. A., and R. F. Cahalan. 1983. "Interannual variability and climatic noise in satellite-observed Outgoing Longwave Radiation." Mon. Wea. Rev., 572-577 [10.1175/1520-0493(1983)111<0572:IVACNI>2.0.CO;2]

    North, G. R., T. L. Bell, R. F. Cahalan, and F. J. Moeng. 1982. "Sampling errors in the estimation of Empirical Orthogonal Functions." Mon. Wea. Rev., 699-706 [10.1175/1520-0493(1982)110<0699:SEITEO>2.0.CO;2]

    North, G. R., F. J. Moeng, T. L. Bell, and R. F. Cahalan. 1982. "The latitude dependence of the variance of zonally averaged quantities." Mon. Wea. Rev., 319-326 [10.1175/1520-0493(1982)110<0319:TLDOTV>2.0.CO;2]

    Cahalan, R. F., D. A. Short, and G. R. North. 1982. "Cloud fluctuation statistics." Mon. Wea. Rev., 110 (1): 26-43 [10.1175/1520-0493(1982)110<0026:CFS>2.0.CO;2]

    North, G. R., and R. F. Cahalan. 1981. "Predictability in a Solvable Stochastic Climate Model." J. Atmos. Sci., 38 (3): 504-513 [10.1175/1520-0469(1981)038<0504:PIASSC>2.0.CO;2]

    North, G. R., R. F. Cahalan, and J. A. Coakley Jr.. 1981. "Energy-balance climate models." Rev. Geophys. Space Phys., 19 (1): 91-121 [10.1029/RG019i001p00091]

    Salmun, H., R. F. Cahalan, and G. R. North. 1980. "Latitude-dependent sensitivity to stationary perturbations in simple climate models." J. Atmos. Sci., 1874-1879 [10.1175/1520-0469(1980)037<1874:LDSTSP>2.0.CO;2]

    Cahalan, R. F., and G. R. North. 1979. "A stability theorem for energy-balance climate models." J. Atmos. Sci., 36 (7): 1178-1188 [10.1175/1520-0469(1979)036<1178:ASTFEB>2.0.CO;2]

    Balachandran, A. P., S. Borchardt, S. S. Chang, et al. A. Stern, R. F. Cahalan, R. Ramachandran, and H. Rupertsberger. 1978. "Rotationally invariant approximation to charge-monopole scattering." Phys. Rev., D17: 1136-1149 [10.1103/PhysRevD.17.1136]

    Balachandran, A. P., S. Borchardt, S. S. Chang, et al. A. Stern, R. F. Cahalan, R. Ramachandran, and H. Rupertsberger. 1978. "Analyticity of the charge-monopole scattering amplitude." Phys. Rev. D, 17: 1150-1154 [10.1103/PhysRevD.17.1150]

    Cahalan, R. F., and D. Knight. 1976. "Construction of planar diagrams." Phys. Rev., D14: 2126-2136 [10.1103/PhysRevD.14.2126]

    Cahalan, R. F., K. A. Geer, J. Kogut, and L. Susskind. 1975. "Asymptotic freedom and the "absence" of vector-gluon exchange in wide-angle hadronic collisions." Phys. Rev. D, 11 (5): 1199-1212 [10.1103/PhysRevD.11.1199]

    Cahalan, R. F., and K. O. Mikaelian. 1974. "Zo effect in lepton-pair photoproduction." Phys. Rev., D10: 3769-3779 [10.1103/PhysRevD.10.3769]

    Cahalan, R. F., and P. H. Frampton. 1974. "Spontaneous symmetry breakdown and Regge intercepts." Phys. Letters, B: 475-478 [10.1016/0370-2693(74)90264-0]

    Cahalan, R. F. 1974. "Zo photoproduction at high energy." Phys. Rev., D9: 257-272 [10.1103/PhysRevD.9.257]

    Cahalan, R. F. 1972. "Cluster expansion in a renormalizable theory: The elastic form factor." Phys. Rev. D, 5 (12): 2999-3021 [10.1103/PhysRevD.5.2999]

    Brief Bio

    Dr. Robert F. Cahalan has been doing scientific research for more than 40 years, is a Fellow of the American Meteorological Society and a recipient of numerous awards for scientific research, including the United States Outstanding Leadership and Service Medal. Dr. Cahalan was the first Co-Director of the Sun-Climate Research Center at NASA’s Goddard Space Flight Center in Greenbelt Maryland, and recently retired as Chief of Goddard’s Climate and Radiation Laboratory. He is President Emeritus of the International Radiation Commission. He contributed to several Assessment Reports of the United Nations Intergovernmental Panel on Climate Change (IPCC), including the Fourth Assessment Report (AR4) that garnered the 2007 Nobel Prize. In 2006 Cahalan, with his wife Maggie Cahalan, and Joan Clement, co-founded the Chesapeake Education, Arts, and Research Society, CHEARS, a 501c3 non-profit dedicated to the health of all in the Chesapeake Watershed. 

    Publications

    Refereed

    Wen, G., R. F. Cahalan, D. Rind, et al. J. Jonas, P. Pilewskie, D. L. Wu, and N. A. Krivova. 2017. "Climate responses to SATIRE and SIM-based spectral solar forcing in a 3D atmosphere-ocean coupled GCM." Journal of Space Weather and Space Climate 7 A11 [10.1051/swsc/2017009]

    Lee, J. N., R. F. Cahalan, and D. Wu. 2016. "Solar Rotational Modulations of Spectral Irradiance and Correlations with the Variability of Total Solar Irradiance." J. Space Weather Space Climate 6 (A33): [http://dx.doi.org/10.1051/swsc/2016028]

    Motesharrei, S., J. Rivas, E. Kalnay, et al. G. R. Asrar, A. J. Busalacchi, R. F. Cahalan, M. A. Cane, R. R. Colwell, K. Feng, R. S. Franklin, K. Hubacek, F. Miralles-Wilhelm, T. Miyoshi, M. Ruth, R. Sagdeev, A. Shirmohammadi, J. Shukla, J. Srebric, V. M. Yakovenko, and N. Zeng. 2016. "Modeling Sustainability: Population, Inequality, Consumption, and Bidirectional Coupling of the Earth and Human Systems." National Science Review 3 (4): 470-494 [10.1093/nsr/nww081]

    Lee, J. N., R. F. Cahalan, and D. L. Wu. 2015. "The 27-Day Rotational Variations in Total Solar Irradiance Observations: from SORCE/TIM, ACRIM III, and SOHO/VIRGO ." Journal of Atmospheric and Solar-Terrestrial Physics 64-73 [10.1016/j.jastp.2015.07.001]

    Woods, T., R. F. Cahalan, W. Denig, et al. G. Kopp, P. Pilewskie, and T. Sparn. 2014. "Rapid coordination extends space-based sun-climate record." EOS 95 429-430 [10.1002/2014EO470002]

    Wen, G., A. Marshak, L. Remer, et al. R. Levy, N. Loeb, T. Várnai, and R. F. Cahalan. 2013. "Correction of MODIS aerosol retrieval for 3D radiative effects in broken cloud fields." [10.1063/1.4804761]

    Wen, G., R. F. Cahalan, D. Rind, et al. J. Jonas, P. Pilewskie, and J. Harder. 2013. "Spectral solar UV radiation and its variability and climate responses." [10.1063/1.4804888]

    Woods, T., G. Rottman, R. F. Cahalan, et al. J. Harder, G. Kopp, J. Lean, and M. Snow. 2013. "The SORCE mission celebrates ten years." The Earth Observer 25 (1): 3-13

    Wen, G., R. F. Cahalan, J. D. Haigh, et al. P. Pilewskie, L. Oreopoulos, and J. W. Harder. 2013. "Reconciliation of modeled climate responses to spectral solar forcing." J. Geophys. Res. Atmos. 118 (12): 6281–6289 [10.1002/jgrd.50506]

    Wen, G., A. Marshak, R. C. Levy, et al. L. A. Remer, N. Loeb, T. Varnai, and R. F. Cahalan. 2013. "Improvement of MODIS aerosol retrievals near clouds." J. Geophys. Res. Atmos. 118 (16): 9168-9181 [10.1002/jgrd.50617]

    Cahalan, R. F., and J. Fischer. 2013. "Radiation Processes in the Atmosphere and Ocean (IRS2012): Proceedings of the International Radiation Symposium (IRC/IAMAS)." 1531 1-970 [Full Text (Link)] [10.1063/1.4804695]

    Sun, M., J. Li, C. Yang, et al. G. A. Schmidt, M. Bambacus, R. Cahalan, Q. Huang, C. Xu, E. U. Noble, and Z. Li. 2012. "A Web-Based Geovisual Analytical System for Climate Studies." Future Internet 4 (4): 1069-1085 [10.3390/fi4041069]

    Pounder, N., R. Hogan, T. Varnai, A. Battaglia, and R. F. Cahalan. 2012. "A Variational Method to Retrieve the Extinction Profile in Liquid Clouds Using Multiple-Field-of-View Lidar." J Appl Meteor Climatol 51 (2): 350-365 [10.1175/JAMC-D-10-05007.1]

    Cahalan, R. F., G. Wen, J. W. Harder, and P. Pilewskie. 2010. "Temperature responses to spectral solar variability on decadal time scales." Geophysical Research Letters 37 (7): [10.1029/2009gl041898]

    Oreopoulos, L., S. E. Platnick, G. Hong, P. Yang, and R. F. Cahalan. 2009. "The Shortwave Radiative Forcing Bias of Homogeneous Liquid and Ice Clouds Observed by MODIS." [PowerPoint slides] Retrieved from Current Problems in Atmospheric Radiation (IRS 2008 Proceedings) [10.1063/1.3117049]

    Oreopoulos, L., S. Platnick, G. Hong, P. Yang, and R. Cahalan. 2009. "The shortwave radiative forcing bias of liquid and ice clouds from MODIS observations." Atmos. Chem. Phys. 9 (16): 5865-5875 [10.5194/acp-9-5865-2009]

    Wen, G., A. Marshak, and R. F. Cahalan. 2008. "Importance of molecular Rayleigh scattering in the enhancement of clear sky radiance in the vicinity of boundary layer cumulus clouds." J. Geophys. Res. 113 [10.1029/2008JD010592]

    Miyahara, H., G. Wen, R. F. Cahalan, and A. Ohmura. 2008. "Deriving historical total solar irradiance from lunar borehole temperatures." Geophys. Res. Lett. 35 [10.1029/2007GL032171]

    Marshak, A., G. Wen, J. Coakley, et al. L. Remer, N. Loeb, and R. F. Cahalan. 2008. "A simple model for the cloud adjacency effect and the apparent bluing of aerosols near clouds." J. Geophys. Res. 113 [10.1029/2007JD009196]

    Sud, Y. C., G. K. Walker, Y. Zhou, et al. G. A. Schmidt, W. K. Lau, and R. F. Cahalan. 2008. "Effects of doubled CO2 on tropical sea surface temperatures (SSTs) for onset of deep convection and maximum SST: Simulations based inferences." Geophysical Research Letters 35 (12): L12707 [10.1029/2008GL033872]

    Wen, G., A. Marshak, R. F. Cahalan, L. Remer, and R. G. Kleidman. 2007. "3D aerosol-cloud radiative interaction observed in collocated MODIS and ASTER images of cumulus cloud fields." J. Geophys. Res. 112 [10.1029/2005JD006686 ]

    Oreopoulos, L., R. Cahalan, and S. Platnick. 2007. "The Plane-Parallel Albedo Bias of Liquid Clouds from MODIS Observations." J. Climate 20 (20): 5114-5125 [10.1175/JCLI4305.1]

    Varnai, T., and R. F. Cahalan. 2007. "Potential for airborne offbeam lidar measurements of snow and sea ice thickness." J. Geophys. Res. 112 (C12): C12S90 [10.1029/2007JC004091]

    Oreopoulos, L., A. Marshak, R. F. Cahalan, et al. T. Varnai, A. B. Davis, and A. Macke. 2006. "New directions in the radiative transfer of cloudy atmospheres." Eos Trans. AGU 87 (5): 52 [10.1029/2006EO050006]

    Wen, G., A. Marshak, and R. Cahalan. 2006. "Impact of 3D Clouds on Clear Sky Reflectance and Aerosol Retrieval in a Biomass Burning Region of Brazil." IEEE Geo Rem Sens Lett 3 169-172 [10.1109/LGRS.2005.861386]

    Marshak, A., S. E. Platnick, T. Varnai, G. Wen, and R. F. Cahalan. 2006. "Impact of three-dimensional radiative effects on satellite retrievals of cloud droplet sizes." J. Geophys. Res. 111 (D9): D09207 [10.1029/2005JD006686]

    Cahalan, R. F. 2005. "Effective Cloud Properties for Large-Scale Models, Chapter 8, in Three-dimensional Radiative Transfer in Cloudy Atmospheres." [10.1007/3-540-28519-9]

    Anderson, D., and R. F. Cahalan. 2005. "The Solar Radiation and Climate Experiment (SORCE) Mission for the NASA Earth Observing System (EOS)." Solar Phys 230 (1): 3-6 [10.1007/s11207-005-1592-6]

    Cahalan, R., L. Oreopoulos, A. Marshak, et al. K. Evans, A. Davis, R. Pincus, K. Yetzer, B. Mayer, R. Davies, T. Ackerman, H. Barker, E. Clothiaux, R. Ellingson, M. Garay, E. Kassianov, S. Kinne, O. Macke, O. Macke, O. Macke, P. Partain, S. Prigarin, A. Rublev, G. Stephens, F. Szczap, E. Takara, T. Varnai, G. Wen, and T. Zhuravleva. 2005. "The International Intercomparison of 3D Radiation Codes (I3RC): Bringing together the most advanced radiative transfer tools for cloudy atmospheres." Bull Amer Meteor Soc 86 (9): 1275-1293 [10.1175/BAMS-86-9-1275]

    Oreopoulos, L., and R. Cahalan. 2005. "Cloud Inhomogeneity from MODIS." J. Climate 18 (23): 5110-5124 [10.1175/JCLI3591.1]

    Cahalan, R. F., M. J. Mcgill, J. Kolasinski, T. Varnai, and K. Yetzer. 2005. "THOR—Cloud Thickness from Offbeam Lidar Returns." Journal of Atmospheric and Oceanic Technology 22 (6): 605-627 [10.1175/JTECH1740.1]

    Oreopoulos, L., M. Chou, M. Khairoutdinov, H. Barker, and R. Cahalan. 2004. "Performance of Goddard Earth Observing System GCM column radiation models under heterogeneous cloud conditions." Atmospheric Research 72 365-382 [10.1016/j.atmosres.2004.03.025]

    Wen, G., R. F. Cahalan, and B. N. Holben. 2003. "Limitations of ground-based solar irradiance estimates due to atmospheric variations." J. Geophys. Res. 108 [10.1029/2003JD003431]

    Oreopoulos, L., A. Marshak, and R. Cahalan. 2003. "Consistency of ARESE II cloud absorption estimates and sampling issues." J. Geophys. Res. 108 (D1): 4029 [10.1029/2002JD002243]

    Rozwadowska, A., and R. Cahalan. 2002. "Plane-parallel biases computed from inhomogeneous clouds and sea ice." J Geophys Res 107 4384-4401 [10.1029/2002JD002092]

    Davis, A., S. Love, R. Cahalan, and M. McGill. 2002. "Off-beam Lidar senses cloud thickness and density." Laser Focus World October Issue 38 [ 101-103]

    Davis, A. B., R. F. Cahalan, and A. Marshak. 2001. "Green functions for multiple scattering as mathematical tools for dense cloud remote sensing: theory, with passive and active applications, in Laser Radar Technology and Applications VI."

    Wen, G., R. Cahalan, S.-C. Tsay, and L. Oreopoulos. 2001. "Impact of cumulus cloud spacing on Landsat atmospheric correction and aerosol retrieval." J. Geophys. Res. 106 (D11): 12129-12138 [10.1029/2001JD900159]

    DeFelice, T., and R. F. Cahalan. 2001. "Reply to Comment on 'Landsat 7 reveals more than just surface features in remote areas of the globe' by L. Hubert." Bull Amer Meteor Soc 82 (2): 314-314 [10.1175/1520-0477(2001)082<0314:REPLY>2.3.CO;2]

    Cahalan, R. F., L. Oreopoulos, G. Wen, et al. A. Marshak, S.-C. Tsay, and T. DeFelice. 2001. "Cloud characterization and clear sky correction from Landsat 7." Remote Sens Environ 78 (1-2): 83-98 [10.1016/S0034-4257(01)00251-6]

    DeFelice, T., J. Meyer, G. Xian, J. Christopherson, and R. Cahalan. 2000. "Landsat 7 reveals more than just surface features in remote areas of the globe." Bull Amer Meteor Soc 81 1047-1049 [10.1175/1520-0477(2000)081<1047:CAA>2.3.CO;2]

    Oreopoulos, L., A. Marshak, R. F. Cahalan, and G. Wen. 2000. "Cloud three-dimensional effects evidenced in Landsat spatial power spectra and autocorrelation functions." J Geophys Res 105 (D11): 14777-14788 [10.1029/2000JD900153]

    Oreopoulos, L., R. F. Cahalan, A. Marshak, and G. Wen. 2000. "A new normalized difference cloud retrieval technique applied to Landsat radiances over the Oklahoma ARM Site." J Appl Meteor 39 (12): 2305-2320 [10.1175/1520-0450(2000)039<2305:ANNDCR>2.0.CO;2]

    Wen, G., S.-C. Tsay, R. F. Cahalan, and L. Oreopoulos. 1999. "Path radiance technique for retrieving aerosol optical thickness over land." J. Geophys. Res. 104 (D24): 31321-31332 [10.1029/1999JD900964]

    Marshak, A., W. Wiscombe, A. Davis, L. Oreopoulos, and R. Cahalan. 1999. "On the Removal of the Effect of Horizontal Fluxes In Two-Aircraft Measurements of Cloud Absorption." Q.J Royal Met. Soc. 125 (558): 2153-2170 [10.1002/qj.49712555811]

    Marshak, A., L. Oreopoulos, A. Davis, W. Wiscombe, and R. Cahalan. 1999. "Horizontal radiative fluxes in clouds and accuracy of the independent pixel approximation at absorbing wavelengths." Geophys. Res. Lett. 26 (11): 1585-1588 [10.1029/1999GL900306]

    Davis, A. B., R. F. Cahalan, J. D. Spinhirne, M. J. Mcgill, and S. P. Love. 1999. "Off-beam lidar: An emerging technique in cloud remote sensing based on radiative Green-function theory in the diffusion domain." Phys Chem Earth - B 24 177-185 [10.1016/S1464-1909(99)00077-5]

    Davis, A. B., A. Marshak, R. F. Cahalan, and W. J. Wiscombe. 1998. "Insight into three-dimensional radiation transport from diffusion theory, application to the cloudy atmosphere, in Radiative Transfer." [10.1615/ICHMT.1997.IntSymLiqTwoPhaseFlowTranspPhen]

    Marshak, A., A. Davis, W. J. Wiscombe, and R. F. Cahalan. 1998. "Radiative effects of sub-mean-free-path liquid water variability observed in stratiform clouds." J. Geophys. Res. 103 19557-19567 [10.1029/98JD01728]

    Marshak, A., A. Davis, R. F. Cahalan, and W. J. Wiscombe. 1998. "Nonlocal Independent Pixel Approximation, direct and inverse problems." IEEE Trans. Geosci. Remote Sens. 36 [10.1109/36.655329]

    Marshak, A., A. Davis, W. J. Wiscombe, W. Ridgway, and R. F. Cahalan. 1998. "Biases in shortwave column absorption in the presence of fractal clouds." J. Climate 11 431-446 [10.1175/1520-0442(1998)011<0431:BISCAI>2.0.CO;2]

    Davis, A. B., A. Marshak, R. F. Cahalan, and W. J. Wiscombe. 1997. "Evidence for net horizontal radiative fluxes in marine stratocumulus, in IRS '96: Current Problems in Atmospheric Radiation."

    Davis, A. B., D. Winker, A. Marshak, et al. J. Spinhirne, R. F. Cahalan, S. Love, H. Melfi, and W. J. Wiscombe. 1997. "Retrieval of physical and optical cloud thicknesses from space-borne and wide-angle lidar, in Advances inn Atmospheric Remote Sensing with Lidar." [10.1007/978-3-642-60612-0]

    Marshak, A., A. B. Davis, R. F. Cahalan, and W. J. Wiscombe. 1997. "Physical simulation of high resolution satellite images for fractal cloud models, in Fractal Frontiers."

    Marshak, A., A. B. Davis, R. F. Cahalan, and W. J. Wiscombe. 1997. "The effect of horizontal fluxes on cloud absorption estimates based on simulated two-aircraft measurements of fractal clouds, in IRS '96: Current Problems in Atmospheric Radiation."

    Marshak, A., A. B. Davis, R. F. Cahalan, and W. J. Wiscombe. 1997. "Nonlocal Independent Pixel Approximation for computing radiation fields of inhomogeneous clouds, in IRS '96: Current Problems in Atmospheric Radiation."

    Cahalan, R. F., A. B. Davis, A. Marshak, D. S. Silberstein, and W. J. Wiscombe. 1997. "Cloud Macrostructure and Radiation, in Remote Sensing: A Scientific Vision for Sustainable Development." [10.1109/IGARSS.1997.608888]

    Marshak, A., A. Davis, W. J. Wiscombe, and R. F. Cahalan. 1997. "Scale-invariance of liquid water distributions in marine stratocumulus. II. Multifractal properties and intermittency issues." J. Atmos. Sci. 54 1423-1444 [10.1175/1520-0469(1997)054<1423:SIILWD>2.0.CO;2]

    Marshak, A., A. Davis, W. J. Wiscombe, and R. F. Cahalan. 1997. "Inhomogeneity effects on cloud shortwave absorption measurements: Two-aircraft simulations." J. Geophys. Res. 102 16619-16637 [10.1029/97JD01153]

    Davis, A., A. Marshak, R. F. Cahalan, and W. J. Wiscombe. 1997. "The Landsat scale break in stratocumulus as a three-dimensional radiative transfer effect: Implications for cloud remote sensing." J. Atmos. Res. 54 241-260 [10.1175/1520-0469(1997)054<0241:TLSBIS>2.0.CO;2]

    Davis, A., A. Marshak, R. F. Cahalan, and W. J. Wiscombe. 1997. "Interactions, solar and Laser beams in stratus clouds, fractals and multifractals in climate and remote sensing studies." Fractals 5 129-166

    Marshak, A., A. B. Davis, W. J. Wiscombe, and R. F. Cahalan. 1996. "Multifractal characterizations of intermittency in nonstationary geophysical signals and fields, in Nonstationary Random Processes and Their Applications."

    Davis, A., A. Marshak, W. J. Wiscombe, and R. F. Cahalan. 1996. "Scale-invariance of liquid water distributions in marine stratocumulus. I. Spectral properties and stationarity issues." J. Atmos. Sci. 53 1538-1558 [10.1175/1520-0469(1996)053<1538:SIOLWD>2.0.CO;2]

    Cahalan, R. F., L. Wharton, and M.-L. Wu. 1996. "Empirical Orthogonal Functions of monthly temperature and precipitation over the United States and homogeneous stochastic models ." J. Geophys. Res. 101 26309-26318 [10.1029/96JD01611]

    Cahalan, R. F., and L. Green. 1996. "Review of "Introduction to Circulating Atmospheres" by I. James." Amer. Sci. 84 602-603

    Marshak, A., A. Davis, W. J. Wiscombe, and R. F. Cahalan. 1995. "Radiative smoothing in fractal clouds." J. Geophys. Res. 100 26247-26261 [10.1029/95JD02895]

    Gollmer, S., H. Harshvardhan, R. F. Cahalan, and J. Snider. 1995. "Windowed and wavelet analysis of marine stratocumulus cloud inhomogeneity." J. Geophys. Res. 52 3013-3030 [10.1175/1520-0469(1995)052<3013:WAWAOM>2.0.CO;2]

    Cahalan, R. F., D. S. Silberstein, and J. Snider. 1995. "Liquid water path and plane-parallel albedo bias during ASTEX." J. Atmos. Sci. 52 3002-3012 [10.1175/1520-0469(1995)052<3002:LWPAPP>2.0.CO;2]

    Marshak, A., A. Davis, W. J. Wiscombe, and R. F. Cahalan. 1994. "Bounded Cascade Models as non-stationary multifractals." Phys. Rev. E49 55-69 [10.1103/PhysRevE.49.55]

    Davis, A., A. Marshak, W. J. Wiscombe, and R. F. Cahalan. 1994. "Multifractal characterizations of non-stationarity and intermittency in geophysical fields: Observed, retrieved, or simulated." J. Geophys. Res. 99 8055-8072 [10.1029/94JD00219]

    Cahalan, R. F. 1994. "Bounded cascade clouds - albedo and effective thickness." Nonlinear Proc. Geophys. 1 156-167 [10.5194/npg-1-156-1994]

    Cahalan, R. F., W. L. Ridgway, W. J. Wiscombe, S. Gollmer, and Harshvardhan. 1994. "Independent pixel and Monte Carlo estimates of stratocumulus albedo." J. Atmos. Sci 51 3776-3790 [10.1175/1520-0469(1994)051<3776:IPAMCE>2.0.CO;2]

    Cahalan, R. F., W. L. Ridgway, W. J. Wiscombe, T. L. Bell, and J. B. Snider. 1994. "The albedo of fractal stratocumulus clouds." J. Atmos. Sci 51 2434-2455 [10.1175/1520-0469(1994)051<2434:TAOFSC>2.0.CO;2]

    Cahalan, R. F. 1993. "Analytic variance spectrum for empirical orthogonal functions, in Precipitation Variability and Climate Change, Proceedings of Symposium on Precipitation and Evaporation (Vol 2)."

    Cahalan, R. F., and W. J. Wiscombe. 1993. "Impact of cloud structure on climate, in IRS '92: Current Problems in Atmospheric Radiation."

    Marshak, A., A. Davis, R. F. Cahalan, and W. J. Wiscombe. 1993. "Multi-singular and multi-affine properties of Bounded Cascade Models." Fractals 3 702-710

    Cahalan, R. F. 1992. "Kuwait oil fires as seen by Landsat." J. Geophys. Res. 97 14565-14571 [10.1029/92JD00799]

    Cahalan, R. F. 1991. "Landsat observations of fractal cloud structure, in Nonlinear Variability in Geophysics." [10.1007/978-94-009-2147-4]

    Joseph, J., and R. F. Cahalan. 1990. "Nearest-neighbor spacing in fair weather cumulus." J. Appl. Meteor. 29 793-805 [10.1175/1520-0450(1990)029<0793:NNSOFW>2.0.CO;2]

    Cioffi, D., R. F. Cahalan, and D. T. Leisawitz. 1990. "Turbulence in an IRAS Cirrus Cloud." Bull. Amer. Astro. Soc. 22 1246-1247

    Cahalan, R. F., H. Leidecker, and G. Cahalan. 1990. "Chaotic rhythms of a dripping faucet." Computers in Physics 4 368-383 [10.1063/1.4822928]

    Cahalan, R. F., M. Nestler, W. L. Ridgway, W. J. Wiscombe, and T. L. Bell. 1989. "Marine stratocumulus spatial structure, in Proceedings of the Fourth International Conference on Statistical Climatology."

    Cahalan, R. F. 1989. "Overview of fractal clouds, in IRS '88: Current Problems in Atmospheric Radiation."

    Cahalan, R. F., and J. H. Joseph. 1989. "Fractal statistics of cloud fields." Mon. Wea. Rev. 261-272 [10.1175/1520-0493(1989)117<0261:FSOCF>2.0.CO;2]

    Cahalan, R. F., and J. B. Snider. 1989. "Marine stratocumulus structure." Remote Sens. Environ. 95-107 [10.1016/0034-4257(89)90108-9]

    Cahalan, R. F. 1986. "Nearest neighbor spacing distributions of cumulus clouds, in Proceedings of Third International Conference on Statistical Climatology."

    Cahalan, R. F., and L. S. Chiu. 1986. "Large-scale short-period sea ice-atmosphere interaction." J. Geophys. Res. 10709-10717 [10.1029/JC091iC09p10709]

    Cahalan, R. F. 1983. "EOF spectral estimation in climate analysis, in Proceedings of Second International Meeting on Statistical Climatology (pp. 4.5.1-4.5.7)."

    Short, D. A., and R. F. Cahalan. 1983. "Interannual variability and climatic noise in satellite-observed Outgoing Longwave Radiation." Mon. Wea. Rev. 572-577 [10.1175/1520-0493(1983)111<0572:IVACNI>2.0.CO;2]

    North, G. R., T. L. Bell, R. F. Cahalan, and F. J. Moeng. 1982. "Sampling errors in the estimation of Empirical Orthogonal Functions." Mon. Wea. Rev. 699-706 [10.1175/1520-0493(1982)110<0699:SEITEO>2.0.CO;2]

    North, G. R., F. J. Moeng, T. L. Bell, and R. F. Cahalan. 1982. "The latitude dependence of the variance of zonally averaged quantities." Mon. Wea. Rev. 319-326 [10.1175/1520-0493(1982)110<0319:TLDOTV>2.0.CO;2]

    Cahalan, R. F., D. A. Short, and G. R. North. 1982. "Cloud fluctuation statistics." Mon. Wea. Rev. 110 (1): 26-43 [10.1175/1520-0493(1982)110<0026:CFS>2.0.CO;2]

    North, G. R., and R. F. Cahalan. 1981. "Predictability in a Solvable Stochastic Climate Model." J. Atmos. Sci. 38 (3): 504-513 [10.1175/1520-0469(1981)038<0504:PIASSC>2.0.CO;2]

    North, G. R., R. F. Cahalan, and J. A. Coakley Jr.. 1981. "Energy-balance climate models." Rev. Geophys. Space Phys. 19 (1): 91-121 [10.1029/RG019i001p00091]

    Salmun, H., R. F. Cahalan, and G. R. North. 1980. "Latitude-dependent sensitivity to stationary perturbations in simple climate models." J. Atmos. Sci. 1874-1879 [10.1175/1520-0469(1980)037<1874:LDSTSP>2.0.CO;2]

    Cahalan, R. F., and G. R. North. 1979. "A stability theorem for energy-balance climate models." J. Atmos. Sci. 36 (7): 1178-1188 [10.1175/1520-0469(1979)036<1178:ASTFEB>2.0.CO;2]

    Balachandran, A. P., S. Borchardt, S. S. Chang, et al. A. Stern, R. F. Cahalan, R. Ramachandran, and H. Rupertsberger. 1978. "Rotationally invariant approximation to charge-monopole scattering." Phys. Rev. D17 1136-1149 [10.1103/PhysRevD.17.1136]

    Balachandran, A. P., S. Borchardt, S. S. Chang, et al. A. Stern, R. F. Cahalan, R. Ramachandran, and H. Rupertsberger. 1978. "Analyticity of the charge-monopole scattering amplitude." Phys. Rev. D 17 1150-1154 [10.1103/PhysRevD.17.1150]

    Cahalan, R. F., and D. Knight. 1976. "Construction of planar diagrams." Phys. Rev. D14 2126-2136 [10.1103/PhysRevD.14.2126]

    Cahalan, R. F., K. A. Geer, J. Kogut, and L. Susskind. 1975. "Asymptotic freedom and the "absence" of vector-gluon exchange in wide-angle hadronic collisions." Phys. Rev. D 11 (5): 1199-1212 [10.1103/PhysRevD.11.1199]

    Cahalan, R. F., and K. O. Mikaelian. 1974. "Zo effect in lepton-pair photoproduction." Phys. Rev. D10 3769-3779 [10.1103/PhysRevD.10.3769]

    Cahalan, R. F., and P. H. Frampton. 1974. "Spontaneous symmetry breakdown and Regge intercepts." Phys. Letters B 475-478 [10.1016/0370-2693(74)90264-0]

    Cahalan, R. F. 1974. "Zo photoproduction at high energy." Phys. Rev. D9 257-272 [10.1103/PhysRevD.9.257]

    Cahalan, R. F. 1972. "Cluster expansion in a renormalizable theory: The elastic form factor." Phys. Rev. D 5 (12): 2999-3021 [10.1103/PhysRevD.5.2999]

                                                                                                                                                                                            
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