Profile for Robert Cahalan
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| Title: | Project Scientist, SORCE & TCTE, Free-Flyer/TSIS |
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| Affiliation: | NASA Civil Service |
| Contact: |
E-mail NASA/GSFC/610 Greenbelt, MD 20771 Office Phone: 301-614-5390 Fax: 301-614-6307 |
Dr. Robert F. Cahalan obtained a Ph.D. in Physics from the University of Illinois-Urbana in 1973. His research interests include chaos and fractals, cloud structure, Landsat and other high-resolution satellites, multiple field-of-view lidar, and solar forcing of earth climate.
Honors and Awards
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Citation Statistics
Publications
Wen, G., R.F. Cahalan, J.D. Haigh, P. Pilewskie, L. Oreopoulos, and J.W. Harder (2013). Reconciliation of Modeled Climate Responses to Solar Spectral Forcing. J. Geophy., Res, (Submitted).
Pounder, N.L., R.J. 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, 350-365.
doi: http://dx.doi.org/10.1175/JAMC-D-10-05007.1
Sun, M., J. Li, C. Yang, G.A. Schmidt, M.J. Bambacus, R.F. Cahalan, Q. Huang, E.U. Noble, and Z. Li (2012). A Web-Based Geovisual Analytical System for Climate Studies. Future Internet, 4, 1069-1085.
doi:10.3390-/fi4041069
Cahalan R.F., G. Wen, P. Pilewskie, and J. Harder (2010). Temperature Responses To Spectral Solar Variability On Decadal Timescales. Geophys. Res. Lett., 37, L07705.
doi:10.1029/2009GL041898
Oreopoulos L., S. Platnick, G. Hong, P. Yang, and R.F. Cahalan (2009). The shortwave radiative forcing bias of liquid and ice clouds from MODIS observations. Atmos. Chem. Phys, 9(16), 5865-5875.
doi:10.5194/acp-9-5865-2009
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)
Marshak A., G. Wen, J. Coakley, L. Remer, N. G. 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(D14S17).
doi:10.1029/2007JD009196
Miyahara H., G. Wen, R.F. Cahalan, and A. Ohmura (2008). Deriving Historical Total Solar Irradiance from Lunar Borehole Temperatures. Geophys. Res. Lett., 35, L02716.
doi:10.1029/2007GL032171
Sud Y.C., G.K. Walker, Y.P. Zhou, G. A. Schmidt, W.K.-M. 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. Geophy. Res. Lett., 35( L12707).
doi:10.1029/2008GL033872
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(D24207).
doi:10.1029/2008JD010592
Oreopoulos L., R. Cahalan, and S. Platnick (2007). The plane-parallel albedo bias of liquid clouds from MODIS observations. J. Climate, 20, 5114-5125.
Varnai T., and R.F. Cahalan (2007). Potential for airborne offbeam lidar measurements of snow and sea ice thickness. J. Geophys. Res., 112, C12S90.
10.1029/2007JC004091
Wen G., A. Marshak, R.F. Cahalan, L.A. 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, D13204.
10.1029/2006JD008267
Marshak A., S. Platnick, T. Varnai, G. Wen, and R.F. Cahalan (2006). Impact of 3D radiative effects on satellite retrievals of cloud droplet sizes. J. Geophys. Res., DO9207, 111.
10.1029/2005JD006686
Oreopoulos L., A. Marshak, R.F. Cahalan, T. Varnai, A. B. Davis, and A. Macke (2006). New Directions in the Radiative Transfer of Cloudy Atmospheres EOS, No. 5, 31 January 2006
Wen G., A. Marshak, and R.F. 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.
Anderson D. E., and R.F. Cahalan (2005). The Solar Radiation and Climate Experiment (SORCE) Mission for the NASA Earth Observing System (EOS). Solar Phys., Issue 1, 203, 3-6.
Cahalan, R.F., M. McGill, J. Kolasinski, T. Varnai, and K. Yetzer (2005). THOR- Thickness from Offbeam Returns lidar. J. Atmos. Ocean. Technol., 22, 605-627.
Cahalan R.F., M. McGill, J. Kolasinski, T. Varnai, and K. Yetzer (2005). THOR — Cloud Thickness from Offbeam Lidar Returns. J. Atmos. Ocean. Tech., 22(6), 605-627.
Cahalan R.F., L. Oreopoulos, A. Marshak, K. F. 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, A. Macke, OHirok W., 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. (9), 86, 1275-1293.
Cahalan R.F. (2005). Effective Cloud Properties for Large-Scale Models Three-dimensional Radiative Transfer in Cloudy Atmospheres, ed. A. Marshak and A. Davis, Springer, 2005, 686 pages
Oreopoulos L., and R.F. Cahalan (2005). Cloud inhomogeneity from MODIS. J. Climate, No. 23, 18, 5110.
10.1175/JCLI3591.1
Oreopoulos L., M. -D. Chou, M. Khairoutdinov, H. W. Barker, and R.F. Cahalan (2004). Performance of Goddard Earth Observing System GCM column radiation models under heterogeneous cloud conditions. Atmospheric Research, 72, 365-382.
Oreopoulos L., A. Marshak, and R.F. Cahalan (2003). Consistency of ARESE II cloud absorption estimates and sampling issues. J. Geophys. Res. (D1), 4029, 108.
10.1029/2002JD002243
Wen G., R.F. Cahalan, and B. N. Holben (2003). Limitations of ground-based solar irradiance estimates due to atmospheric variations. J. Geophys. Res. (D14), 4400, 108.
10.1029/2003JD003431
Davis A., S. Love, R.F. Cahalan, and M. McGill (2002). Off-beam lidar senses cloud thickness and density Laser Focus World, 38, 101-104
Davis A. B., S. P. Love, R.F. Cahalan, and M.J. McGill (2002). Off-beam Lidar senses cloud thickness and density. Laser Focus World, October Issue, 38, 101-103.
Rozwadowska A., and R.F. Cahalan (2002). Plane-parallel biases computed from inhomogeneous clouds and sea ice. J. Geophys. Res. (Atmos.), 107, 4384-4401.
Cahalan R.F., L. Oreopoulos, G. Wen, A. Marshak, S.C. Tsay, and T. P. DeFelice (2001). Cloud characterization and clear sky correction from Landsat 7. Remote Sens. Environ., 78, 83-98.
Davis A., A. Marshak, and R. Cahalan (2001). Green functions for multiple scattering as mathematical tools for dense cloud remote sensing: theory, with passive and active applications (294-306). Laser Radar Technology and Applications VI, ed. Gary W. Kamerman
DeFelice T. P., and R.F. Cahalan (2001). Comment and Reply on "Landsat 7 reveals more than just surface features in remote areas of the globe". Bull. Amer. Meteor. Soc.,., 82, 313-314.
Wen G., R.F. Cahalan, T. -S. Tsay, and L. Oreopoulos (2001). Impact of cumulus cloud spacing on Landsat atmospheric correction and aerosol retrieval. J. Geophys. Res. - Atmos., 106, 12129-12138.
DeFelice T. P., J. D. Meyer, G. Xian, J. Christopherson, and R.F. Cahalan (2000). Landsat 7 reveals more than just surface features in remote areas of the globe. Bull. Amer. Meteor. Soc., 81, 1047-1049.
Oreopoulos L., A. Marshak, R. Cahalan, and G. Wen (2000). Cloud three-dimensional effects evidenced in Landsat spatial power spectra and autocorrelation function. J. Geophys. Res., 105, 14777-14788.
Oreopoulos L., R. 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, 2305-2320.
Davis A., R. Cahalan, J. Spinhirne, M. McGill, and S. Love (1999). Offbeam Lidar: An emerging technique in cloud remote sensing based on radiative Green function theory in the diffusion domain. Phys. Chem. EarthB24, 177-185.
Davis A.B., R.F. Cahalan, J.D. Spinhirne, M. 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.
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., 11, 1585-1588.
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. Quart. J. Roy. Meteor. Soc., 125, 2153-2170.
Wen G., S.C. Tsay, R. Cahalan, and L. Oreopoulos (1999). Path radiance technique for retrieving aerosol optical thickness over land. J. Geophys. Res. - Atmos., 104, 31321-31332.
Davis A., A. Marshak, R. Cahalan, and W. Wiscombe (1998). Insight into three-dimensional radiation transport from diffusion theory, application to the cloudy atmosphere (111-139). Radiative Transfer, Ed. M. P. Mengue, Begell House, Inc., NY
Marshak A., A. Davis, R. Cahalan, and W. Wiscombe (1998). Nonlocal Independent Pixel Approximation, direct and inverse problems. IEEE Trans. Geosci. Remote Sens., 36, 192-205.
Marshak A., A. Davis, W. Wiscombe, and R. Cahalan (1998). Radiative effects of sub-mean-free-path liquid water variability observed in stratiform clouds. J. Geophys. Res. (Atmos.), 103, 19557-19567.
Marshak A., A. Davis, W. Wiscombe, W. Ridgway, and R. Cahalan (1998). Biases in shortwave column absorption in the presence of fractal clouds. J. Climate, 11, 431-446.
Cahalan R.F., A. Davis, A. Marshak, D. Silberstein, and W. Wiscombe (1997). Cloud macrostructure and radiation. Remote Sensing A Scientific Vision for Sustainable Development: LC 97-70575, ISBN 0-7803-3839-1 F01, 41-44.
Davis A., A. Marshak, R.F. Cahalan, and W. Wiscombe (1997). Interactions, solar and Laser beams in stratus clouds, fractals and multifractals in climate and remote sensing studies. Fractals, 5, 129-166.
Davis A., A. Marshak, W. Wiscombe, and R.F. Cahalan (1997). Evidence for net horizontal radiative fluxes in marine stratocumulus. (809-812). IRS'96 Current Problems in Atmospheric Radiation, W. L. Smith and K. Stamnes, Eds., Deepak Publ.
Davis A., D. Winker, A. Marshak, J. Spinhurne, R. Cahalan, S. Love, S. Melfi, and W. Wiscombe (1997). Retrieval of physical and optical cloud thicknesses from space-borne and wide-angle Lidar. Adv. Atmos. Remote Sensing with Lidar, A. Ansmann, R. Neuber, P. Rairoux and U. Wadinger, Eds. Springer-Verlag, 193-196.
Davis A., A. Marshak, R.F. Cahalan, and W. Wiscombe (1997). The Landsat scale break in stratocumulus as a three-dimensional radiative transfer effect: Implications for cloud remote sensing. J. Atmos. Sci., 54, 241-260.
Marshak A., A. Davis, R. Cahalan, and W. Wiscombe (1997). Physical simulation of high-resolution satellite images for fractal cloud model (301-310). Fractal Frontiers. M. M. Novak and T. G. Dewey, Eds., World Scientific
Marshak A., A. Davis, R. Cahalan, and W. Wiscombe (1997). The effect of horizontal fluxes on cloud absorption estimates based on simulated two-aircraft measurements of fractal clouds. IRS'96: Current problems in atmospheric radiation (415-418). W. L. Smith and K. Stamnes, Eds., Deepak Publ.
Marshak A., A. Davis, R.F. Cahalan, and W. Wiscombe (1997). Nonlocal Independent Pixel Approximation for computing radiation fields of inhomogeneous clouds. IRS'96: Current problems in atmospheric radiation (139-142). W. L. Smith and K. Stamnes, Eds., Deepak Publ.
Marshak A., A. Davis, W. Wiscombe, and R. Cahalan (1997). Inhomogeneity effects on cloud shortwave absorption measurements: Two-aircraft simulations. J. Geophys. Res., 102, 16619-16637.
Marshak A., A. Davis, W. 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.
Cahalan R.F., and L. Green (1996). Review of Introduction to Circulating Atmospheres by I. James. Amer. Sci., 84, 602-603.
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.
Davis A., A. Marshak, W. Wiscombe, and R.F. Cahalan (1996). Multifractal characterizations of intermittency in nonstionary geophysical signals and fields (97-158). Nonstationary Random Processes and Their Applications, G. Trevino, Ed., World Scientific
Davis A., A. Marshak, W. 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.
Cahalan R.F., D. Silberstein, and J. B. Snider (1995). Liquid water path and plane-parallel albedo bias during ASTEX. J. Atmos. Sci., 52, 3002-3012.
Gollmer S., Harshvardhan, R.F. Cahalan, and J. B. Snider (1995). Windowed and wavelet analysis of marine stratocumulus cloud inhomogeneity. J. Atmos. Sci., 52, 3013-3030.
Marshak A., A. Davis, W. Wiscombe, and R.F. Cahalan (1995). Radiative smoothing in fractal clouds. J. Geophys. Res. (Atmos.), 100, 26247-26261.
Cahalan R.F. (1994). Bounded cascade clouds albedo and effective thickness. Nonlinear Proc. Geophys., 1, 156-167.
Cahalan R.F., W. Ridgway, W.J. Wiscombe, Harshvardhan, and S. Gollmer (1994). Independent pixel and Monte Carlo estimates of stratocumulus albedo. J. Atmos. Sci., 51, 3776-3790.
Cahalan R.F., W. Ridgway, W.J. Wiscombe, T.L. Bell, and J. B. Snider (1994). The albedo of fractal stratocumulus clouds. J. Atmos. Sci., 51, 2434-2455.
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.
Marshak A., A. Davis, R.F. Cahalan, and W.J. Wiscombe (1994). Bounded Cascade Models as non-stationary multifractals. Phys. Rev.E49, 55-69.
Cahalan R.F., and W.J. Wiscombe (1993). Impact of cloud structure on climate (120-124). Current Problems in Atmospheric Radiation. A. Deepak Publishing
Marshak A., A. Davis, R. Cahalan, and W. 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.
Cahalan R.F. (1991). Landsat observations of fractal cloud structure (281-295). Nonlinear Variability in Geophysics, D. Schertzer and S. Lovejoy, Eds, Kluwer, Inc.
Cahalan R.F., H. Leidecker, and G. Cahalan (1990). Chaotic rhythms of a dripping faucet. Computers In Physics, 4, 368-383.
Cioffi D., R. Cahalan, and D. Leisawitz (1990). Turbulence in an IRAS Cirrus Cloud. Bulletin of the American Astronomical Society, p.1246, 22.
Joseph J. H., and R.F. Cahalan (1990). Nearest-neighbor spacing in fair weather cumulus. J. Appl. Meteor., 29, 793-805.
Cahalan R.F. (1989). Overview of fractal clouds (371-388). Advances in Remote Sensing, A. Deepak Publ.
Cahalan R.F., and J. B. Snider (1989). Marine stratocumulus structure. Remote Sens. Environ., 28, 95-107.
Cahalan R.F., and J. H. Joseph (1989). Fractal statistics of cloud fields. Mon. Wea. Rev., 117, 261-272.
Cahalan R.F., M. Nestler, W. Ridgway, W.J. Wiscombe, and T. Bell (1989). Marine stratocumulus spatial structure (19-25). Proc. Fourth Int. Conf. Stat. Clim., IMSC
Cahalan R.F., and L. S. Chiu (1986). Large-scale short-period sea ice-atmosphere interaction. J. Geophys. Res., 91, 10709-10717.
Cahalan R.F. (1986). Nearest neighbor spacing distributions of cumulus clouds (212-217). Proc. Int. Conf. Stat. Clim.
Short D. A., and R.F. Cahalan (1983). Interannual variability and climatic noise in satellite-observed Outgoing Longwave Radiation. Mon. Wea. Rev., 111, 572-577.
Cahalan R.F., D. A. Short, and G. R. North (1982). Cloud fluctuation statistics. Mon. Wea. Rev., 110, 26-43.
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., 110, 319-326.
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., 110, 699-706.
North G. R., and R.F. Cahalan (1981). Predictability in a solvable stochastic climate model. J. Atmos. Sci., 38, 504-510.
North G. R., R.F. Cahalan, and J. A. Coakley (1981). Energy-balance climate models. Rev. Geophys. Space Phys., 19, 91-121.
Salmun H., R.F. Cahalan, and G. R. North (1980). Latitude-dependent sensitivity to stationary perturbations in simple climate models. J. Atmos. Sci., 37, 1874-1879.
Cahalan R.F., and G. R. North (1979). A stability theorem for energy-balance climate models. J. Atmos. Sci., 36, 1178-1188.
Balachandran A. P., R.F. Cahalan, and et al. (1978). Rotationally invariant approximation to charge-monopole scattering. Phys. Rev.D17, 1136-1149.
Balachandran A. P., R.F. Cahalan, and et al. (1978). Analyticity of the charge-monopole scattering amplitude. Phys. Rev.D17, 1150-1154.
Cahalan R.F., and D. Knight (1976). Construction of planar diagrams. Phys. Rev.D14, 2126-2136.
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.D11, 1199-1212.
Cahalan R.F. (1974). Zo photoproduction at high energy. Phys. Rev.D9, 257-272.
Cahalan R.F., and K. O. Mikaelian (1974). Zo effect in lepton-pair photoproduction. Phys. Rev.D10, 3769-3779.
Cahalan R.F., and P. H. Frampton (1974). Spontaneous symmetry breakdown and Regge intercepts. Phys. LettersB, 50, 475-478.
Cahalan R.F. (1972). Cluster expansion in a renormalizable theory: The elastic form factor. Phys. Rev.D5, 2999-3021.