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The Effect of Sea-Surface Sun Glitter on Microwave Radiometer MeasurementsA relatively simple model for the microwave brightness temperature of sea surface Sun glitter is presented. The model is an accurate closeform approximation for the fourfold Sun glitter integral. The model computations indicate that Sun glitter contamination of on orbit radiometer measurements is appreciable over a large swath area. For winds near 20 m/s, Sun glitter affects the retrieval of environmental parameters for Sun angles as large as 20 to 25 deg. The model predicted biases in retrieved wind speed and sea surface temperature due to neglecting Sun glitter are consistent with those experimentally observed in SEASAT SMMR retrievals. A least squares retrieval algorithm that uses a combined sea and Sun model function shows the potential of retrieving accurate environmental parameters in the presence of Sun glitter so long as the Sun angles and wind speed are above 5 deg and 2 m/s, respectively.
Document ID
19820018649
Document Type
Contractor Report (CR)
Authors
Wentz, F. J. (Remote Sensing Systems, Inc. Sausalito, CA, United States)
Date Acquired
September 4, 2013
Publication Date
November 4, 1981
Subject Category
COMMUNICATIONS AND RADAR
Report/Patent Number
NAS 1.26:169083
NASA-CR-169083
JPL-9950-652
RSS-TR-110481
Funding Number(s)
CONTRACT_GRANT: JPL-954958
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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