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Report to TRMMThe effort involved three elements all related to the measurement of rain and clouds using microwaves: (1) Examine recently proposed techniques for measuring rainfall rate and rain water content using data from ground-based radars and the TRMM microwave link in order to develop improved ground validation and radar calibration techniques; (2) Develop dual-polarization, multiple frequency radar techniques for estimating rain water content and cloud water content to interpret the vertical profiles of radar reflectivity factors (Z) measured by the TRMM Precipitation Radar; and (3) Investigate theoretically and experimentally the potential biases in TRMM Z measurements due to spatial inhomogeneities in precipitation. The research succeeded in addressing all of these topics, resulting in several refereed publications. In addition, the research indicated that the effects of non-Rayleigh statistics resulting from the nature of the precipitation inhomogeneities will probably not result in serious errors for the TRMM radar measurements, but the TRMM radiometers may be subject to significant bias due to the inhomogeneities.
Document ID
19970037534
Acquisition Source
Goddard Space Flight Center
Document Type
Contractor Report (CR)
Authors
Jameson, Arthur R. (RJH Scientific, Inc. Alexandria, VA United States)
Date Acquired
September 6, 2013
Publication Date
September 30, 1997
Subject Category
Meteorology And Climatology
Report/Patent Number
NAS 1.26:205680
NASA-CR-205680
RJHS-1004-001-Final
Accession Number
97N30978
Funding Number(s)
CONTRACT_GRANT: NAS5-32780
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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