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Millimeter wave radiative transfer studies for precipitation measurementsScattering calculations using the discrete dipole approximation and vector radiative transfer calculations were performed to model multiparameter radar return and passive microwave emission for a simple model of a winter storm. The issue of dendrite riming was addressed by computing scattering properties of thin ice disks with varying bulk density. It was shown that C-band multiparameter radar contains information about particle density and the number concentration of the ice particles. The radiative transfer modeling indicated that polarized multifrequency passive microwave emission may be used to infer some properties of ice hydrometers. Detailed radar modeling and vector radiative transfer modeling is in progress to enhance the understanding of simultaneous radar and radiometer measurements, as in the case of the proposed TRMM field program. A one-dimensional cloud model will be used to simulate the storm structure in detail and study the microphysics, such as size and density. Multifrequency polarized radiometer measurements from the SSMI satellite instrument will be analyzed in relation to dual-frequency and dual-polarization radar measurements.
Document ID
19910031222
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Vivekanandan, J.
(Colorado State Univ. Fort Collins, CO, United States)
Evans, Frank
(Colorado State University Fort Collins, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1989
Subject Category
Meteorology And Climatology
Accession Number
91A15845
Funding Number(s)
CONTRACT_GRANT: NSF ATM-87-03126
CONTRACT_GRANT: NAG8-643
Distribution Limits
Public
Copyright
Other

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