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Istvan Laszlo

Satellite Meteorology and Climatology Division

Environmental Monitoring Branch
Research Scientist

SMCD shield

Istvan Laszlo received an M.S. degree in Astronomy/Physics and a Ph.D. degree in Physics (Meteorology) from the Eötvös Loránd University in Budapest, Hungary. He worked at the Institute for Atmospheric Physics of the Hungarian Meteorological Service before joining the faculty of the Department of Atmospheric and Oceanic Science at the University of Maryland at College Park, Maryland. Since April 2001 he has been with the National Oceanic and Atmospheric Administration (NOAA).

Istvan Laszlo's research interests include atmospheric radiation, radiative transfer, radiation budget and remote sensing of atmospheric and surface properties from space. He is a co-author of the well-known Discrete Ordinate Radiative Transfer (DISORT) code, worked on estimating the broadband top of atmosphere albedo from narrowband sensors; developed an algorithm for estimating the shortwave radiation budget, surface albedo, aerosol and cloud optical depth from satellite data. He is currently working on remote sensing of aerosol properties from space and on the estimation of the shortwave radiation budget from operational geostationary satellites.

Istvan Laszlo was an elected member of the International Radiation Commission of the International Association of Meteorology and Atmospheric Physics (IAMAP) and a member of the Scanner for Radiation Budget (ScaRaB) International Science Team. His current memberships include the Clouds and the Earth’s Radiant Energy System (CERES) and NPOESS Science Teams, and the Operational Algorithm Teams for the NPOESS Aerosol Polarimeter Sensor (APS) and for the NPOESS Earth Radiation Budget (ERBS) instrument. He is also a co-chair of the Earth Radiation Budget Oversight Panel (EPOP) and the chair of the GOES-R Radiation Budget Algorithm Working Group at NESDIS.

Istvan Laszlo is the aerosol and radiation budget lead scientist at NESDIS/STAR. He also served as the Acting Chief of the Environmental Monitoring Branch between Sep, 2007 and Aug, 2008.

Recent Publications

Feng, Q., P. Yang, G. W. Kattawar, N. C. Hsu, S.-C. Tsay, and I. Laszlo, 2009: Effects of particle nonsphericity and radiation polarization on retrieving dust properties from satellite observations, J. of Aerosol Sci., 40, 776-789.

Li, Z., Zhao, X., Kahn, R., Mishchenko, M., Remer, L., Lee, K. -H., Wang, M., Laszlo, I., Nakajima, T., Maring, H. (2009), Uncertainties in satellite remote sensing of aerosols and impact on monitoring its long-term trend: a review and perspective, Annales Geophysicae, 27, 7, 2755-2770.

Laszlo, I., H. Liu, A. Ignatov, Comparison of single- and multi- channel aerosol optical depths derived from MAPSS data, 2008, J. Geophys. Res., 113, D19S90, doi:10.1029/2007JD009664.

Gadhavi, H., R. T. Pinker, and I. Laszlo, 2008, Estimates of Surface Ultraviolet (UV) Radiation over North America using GOES observations, J. Geophys. Res. , 113, D21205, doi:10.1029/2007JD009308.

Laszlo I., P. Ciren, H. Liu, S. Kondragunta, J. D. Tarpley and M. D. Goldberg, 2008: Remote sensing of aerosol and radiation from geostationary satellites, Adv. Space Res., 41, 11, 1882-1893, doi: 10.1016/j.asr.2007.06.047

S. Kondragunta, P. Lee, J. McQueen, C. Kittaka, A. I. Prados, P. Ciren, I. Laszlo, R. B. Pierce, R. Hoff, and J. J. Szykman, 2008: Air quality forecast verification using satellite data, J. Appl. Meteor. Climatol., 47, 425-442, DOI: 10.1175/2007JAMC1392.1

Zhao X.P, I. Laszlo, W. Guo, A. Heidinger, C. Cao, A. Jelenak, D. Tarpley, and J. Sullivan, 2008: Study of long-term trend in aerosol optical thickness observed from operational AVHRR satellite instrument, J. Geophys. Res., 113, D07201, doi:10.1029/2007JD009061.

Zhao, Tom X.-P., H. Yu, I. Laszlo, M. Chin, and W. C. Conant, 2008: Derivation of Component Aerosol Direct Radiative Forcing at the Top of Atmosphere for Clear-sky Oceans, Journal of Quantitative Spectroscopy and Radiative Transfer, 109, 1162-1186, DOI: 10.1016/j.jqsrt.2007.10.006.

Lee, H.-T., A. Gruber, R. G. Ellingson and I. Laszlo, 2007: Development of the HIRS Outgoing Longwave Radiation climate data set. J. Atmos. Ocean. Tech., 24, 2029–2047.

Yang P., Feng Q., Hong G., Kattawar G.W., Wiscombe W.J., Mishchenko M.I., Dubovik O., Laszlo I., Sokolik I.N., 2007: Modeling of the scattering and radiative properties of nonspherical dust-like aerosols, Journal of Aerosol Science, 38 (10), 995-1014.

Lawless, R., Y. Xie, P. Yang, G. W. Kattawar, and I. Laszlo 2006: Polarization and effective Mueller matrix for multiple scattering of light by nonspherical ice crystals, Optics Express, Vol. 14, No. 14. June 2006.


E-mail: Istvan.Laszlo@noaa.gov