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Insights into microwave radiative transfer in rain from TRMM-1 observationsThe interpretation of microwave radiometer data in terms of rainfall intensity over the ocean is based on radiative transfer (RT) models. The nadir-viewing brightness temperature expected at 18 GHz is calculated as a function of rainfall intensity for two assumed freezing levels, 4 and 5 km. The tropical rainfall measurement mission (TRMM-1) observations provide an opportunity to examine the assumptions of the RT model. Often in convective rainfall, scattering of microwave radiation by the ice aloft causes extremely low microwave brightness temperatures. The TRMM-1 observations support the assumption that scattering by ice is only a minor factor at frequencies below about 20 GHz over an ocean background.
Document ID
19930064024
Document Type
Conference Paper
Authors
Wilheit, T. T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Tesmer, J. R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wang, S. H. (Texas A & M Univ. College Station, United States)
Meneghini, R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Racette, P. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wang, J. R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kummagai, H. (Communications Research Lab. Koganei, Japan)
Maves, B. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: IGARSS '92; Proceedings of the 12th Annual International Geoscience and Remote Sensing Symposium, Houston, TX, May 26-29, 1992. Vol. 2 (A93-47551 20-43)
Subject Category
METEOROLOGY AND CLIMATOLOGY
Funding Number(s)
CONTRACT_GRANT: NAG5-1423
Distribution Limits
Public
Copyright
Other

Related Records

IDRelationTitle19930063554Analytic PrimaryIGARSS '92; Proceedings of the 12th Annual International Geoscience and Remote Sensing Symposium, Houston, TX, May 26-29, 1992. Vols. 1 & 2