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Comparison of the MODIS Multilayer Cloud Detection and Thermodynamic Phase Products with CALIPSO and CloudSatCALIPSO and CloudSat, launched in June 2006, provide global active remote sensing measurements of clouds and aerosols that can be used for validation of a variety of passive imager retrievals derived from instruments flying on the Aqua spacecraft and other A-Train platforms. The most recent processing effort for the MODIS Atmosphere Team, referred to as the "Collection 5" stream, includes a research-level multilayer cloud detection algorithm that uses both thermodynamic phase information derived from a combination of solar and thermal emission bands to discriminate layers of different phases, as well as true layer separation discrimination using a moderately absorbing water vapor band. The multilayer detection algorithm is designed to provide a means of assessing the applicability of 1D cloud models used in the MODIS cloud optical and microphysical product retrieval, which are generated at a 1 h resolution. Using pixel-level collocations of MODIS Aqua, CALIOP, and CloudSat radar measurements, we investigate the global performance of the thermodynamic phase and multilayer cloud detection algorithms.
Document ID
20080044857
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Platnick, Steven
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
King, Michael D.
(Colorado Univ. Boulder, CO, United States)
Wind, Gala
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Holz, Robert E.
(Wisconsin Univ. Madison, WI, United States)
Ackerman, Steven A.
(Wisconsin Univ. Madison, WI, United States)
Nagle, Fred W.
(Wisconsin Univ. Madison, WI, United States)
Date Acquired
August 24, 2013
Publication Date
August 3, 2008
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: International Radiation Symposium 2008/International Radiation Commission
Location: Foz do Iguacu
Country: Brazil
Start Date: August 3, 2008
End Date: August 10, 2008
Distribution Limits
Public
Copyright
Other

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