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Alexander Marshak Physical Scientist alexander.marshak@nasa.gov (301) 614-6122 Curriculum Vitae |
Professional Activities and Experience
Numerical Solution of the Transport Problem
Radiative Transfer in Leaf Canopies
Remote Sensing Problems
Fractals and Multifractals
Scale-by-Scale Statistical Analysis of Geophysical Data
Cloud Structure (Statistical Analysis & Stochastic Simulation)
Radiative Transfer in Scale-Invariant Media & Application to Clouds
Background
I work for NASA - Goddard Space Flight Center, Climate & Radiation Branch (Code 613.2). Before (1997-2002) I worked for JCET - Joint Center for Earth Systems Technology, University of Maryland Baltimore County. And these are some of the people I work with:
* Anthony Davis;
* Warren Wiscombe;
* Bob Cahalan;
* Robert Pincus;
* Lazaros Oreopoulos;
* Tamas Varnai;
* Frank Evans.
Access the ISI Web of Knowledge.
Academic Information
*Alexander von Humboldt Fellow; Institute of Bioclimatology, Goettingen, Germany;
*Institute of Astrophysics and Atmospheric Physics, Tartu, Estonia;
*Siberian Branch of the Academy of Sciences of the Former USSR, Novosibirsk, Russia, Ph. D. in Numerical Analysis (1983);
*Department of Mathematics, Tartu State University, Tartu, Estonia, M.S. in Applied Mathematics (1978).
Latest Publications
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. [Abstract] [Full Text (PDF)]
Evans, K. F., A. Marshak, and T. Varnai, 2008: The Potential for Improved Boundary Layer Cloud Optical Depth Retrievals from the Multiple Directions of MISR. J. Atmos. Sci. (In press) [Abstract] [Full Text (PDF)]
Prigarin, S., and A. Marshak, 2008: A simple stochastic model for generating broken cloud optical depth and top height fields. J. Atmos. Sci. (In press) [Abstract] [Full Text (PDF)]
Zinner, T., A. Marshak, S. Lang, J. V. Martins, and B. Mayer, 2008: Remote sensing of cloud sides of deep convection: Towards a three-dimensional retrieval of cloud particle size profiles. Atmos. Chem. Phys., 8, 4741-4757. [Abstract] [Full Text (PDF)]
Kato, S., and A. Marshak, 2008: Solar Zenith and Viewing Geometry Dependent Errors in Satellite Retrieved Cloud Optical Thickness; Marine Stratocumulus Case. J.Geophys. Res.. (Submitted) [Abstract] [Full Text (PDF)]
Wen, G., A. Marshak, and R. F. Cahalan, 2008: Role of Molecular Rayleigh Scattering in the Enhancement of Clear Sky Radiance in the Vicinity of Cumulus Clouds. J. Geophys. Res (Yoram J. Kaufman Special issue). (Submitted) [Abstract] [Full Text (PDF)]
Yang, Y., A. Marshak, J. C. Chiu, W. J. Wiscombe, S. P. Palm, A. B. Davis, D. A. Spangenberg, L. Nguyen, J. D. Spinhirne, and Pl Minnis, 2008: Retrievals of Cloud Optical Depth from the Geoscience Laser Altimeter System (GLAS) by Calibration of Solar Background Signal. J. Atmos. Sci., doi: 10.1175/2008JAS2744.1. (In press) [Abstract] [Full Text (PDF)]
Prigarin, S., and A. Marshak, 2008: Simulation of vector semi-binary homogeneous random fields and modeling of broken clouds. Siberian J. Numeric. Math., 11, 347-356 (in Russian) and Numeric. Anal. Appl., 3, 285-292 (in English). [Abstract]
Chiu, J. C., A. Marshak, Y. Knyazikhin, P. Pilewskie, and W. Wiscombe, 2008: Physical interpretation of the spectral radiative signatures in the transition zone between cloud-free and cloudy regions. Atmos. Chem. Phys. Disc.. (In press) [Abstract]
Varnai, T., and A. Marshak, 2007: View angle dependence of cloud optical thickness retrieved by MODIS. J. Geophys. Res., 112, D06203, doi:10.1029/2005JD006912. [Abstract] [Full Text (PDF)]
Latest Images of the Week
Cloud-Free Air is Brighter at Shorter Wavelengths Around Thicker Clouds (Aug 17, 2008)
What’s going on around cloud edges: interpretations of spectral measurements of the overhead radiance (Jul 13, 2008)
Enhanced Clear Sky Brightness in the Vicinity of Clouds (Mar 30, 2008)
Retrieving thick cloud optical depth from space-borne lidar observations (Mar 16, 2008)
Remote sensing of cloud sides of deep convective clouds (Dec 9, 2007)
Lidar solar background light helps studies of aerosol-cloud interactions (Aug 26, 2007)
Derivation of Realistic High-resolution Cloud Structure (Nov 26, 2006)
Correlation between horizonal cloud size and fractional cloud coverage (May 14, 2006)
Measuring aerosol and cloud properties from the roof of Building 33 (Nov 27, 2005)
Measuring low liquid water paths from an Infrared Thermometer (Oct 2, 2005)