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Example MODIS Global Cloud Optical and Microphysical Properties: Comparisons between Terra and AquaMODIS observations from the NASA EOS Terra spacecraft (launched in December 1999, 1030 local time equatorial crossing) have provided a unique data set of Earth observations. With the launch of the NASA Aqua spacecraft in May 2002 (1330 local time), two MODIS daytime (sunlit) and nighttime observations are now available in a 24 hour period, allowing for some measure of diurnal variability. We report on an initial analysis of several operational global (Level-3) cloud products from the two platforms. The MODIS atmosphere Level-3 products, which include clear-sky and aerosol products in addition to cloud products, are available as three separate files providing daily, eight-day, and monthly aggregations; each temporal aggregation is spatially aggregated to a 1 degree grid. The files contain approximately 600 statisitical datasets (from simple means and standard deviations to 1 - and 2-dimensional histograms). Operational cloud products include detection (cloud fraction), cloud-top properties, and daytimeonly cloud optical thickness and particle effective radius for both water and ice clouds. We will compare example global Terra and Aqua cloud fraction, optical thickness, and effective radius aggregations.
Document ID
Acquisition Source
Goddard Space Flight Center
Document Type
Hubanks, P. A.
(Science Applications International Corp. Lanhan, MD, United States)
Platnick, S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
King, M. D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ackerman, S. A.
(Wisconsin Univ. Madison, WI, United States)
Frey, R. A.
(Wisconsin Univ. Madison, WI, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: AGU Fall 2003 Meeting
Location: San Francisco, CA
Country: United States
Start Date: December 8, 2003
End Date: December 12, 2003
Sponsors: American Geophysical Union
Distribution Limits
Work of the US Gov. Public Use Permitted.

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