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Monitoring global land surface using Nimbus-7 37 GHz data - Theory and examplesSimplified radiative transfer models for 37 GHz brightness temperatures are developed and applied to observations taken with the Nimbus-7 scanning multichannel microwave radiometer. It is found that, as the vegetation density increases, polarization difference decreases. The polarization difference also decreases with increasing surface roughness. Empirical relations are established between the satellite observations and annual rainfall over Africa and Australia, primary productivity, and actual evaporation. Color-coded maps of primary productivity and evaporation are presented.
Document ID
19900034621
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Choudhury, Bhaskar J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
October 1, 1989
Publication Information
Publication: International Journal of Remote Sensing
Volume: 10
ISSN: 0143-1161
Subject Category
Earth Resources And Remote Sensing
Accession Number
90A21676
Distribution Limits
Public
Copyright
Other

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