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Proceedings Paper

Dual-frequency spaceborne Doppler radar: analysis of performances in estimating latent heat fluxes
Author(s): Simone Tanelli; Jonathan P. Meagher; Eastwood Im; Luca Facheris
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Paper Abstract

Knowledge of the global distribution of the vertical velocity of precipitation is important for estimating latent heat fluxes, and therefore in the general study of energy transportation in the atmosphere. Such knowledge can only be acquired with the use of spaceborne Doppler precipitation radars. Recent studies have shown that the average vertical velocity can be measured to acceptable accuracy levels by appropriate selection of radar parameters. Furthermore, methods to correct for specific errors arising from Non-Uniform Beam Filling effects and pointing uncertainties have recently been developed. As detailed in the Global Precipitation Mission (GPM) preparatory studies, the use of a dual-frequency precipitation radar allows improved estimation of the main parameters of the hydrometeor size distribution (bulk quantity and one shape parameter). Such parameters, in turn, lead to improved estimates of latent heat fluxes. In this paper we address the performance of a dual- frequency Doppler Precipitation Radar (DDPR) in estimating the latent heat fluxe from the measured rainfall vertical velocity and DSD parameters.

Paper Details

Date Published: 16 February 2004
PDF: 12 pages
Proc. SPIE 5235, Remote Sensing of Clouds and the Atmosphere VIII, (16 February 2004); doi: 10.1117/12.508394
Show Author Affiliations
Simone Tanelli, Jet Propulsion Lab. (United States)
Jonathan P. Meagher, Jet Propulsion Lab. (United States)
Eastwood Im, Jet Propulsion Lab. (United States)
Luca Facheris, Univ. degli Studi di Firenze (Italy)

Published in SPIE Proceedings Vol. 5235:
Remote Sensing of Clouds and the Atmosphere VIII
Klaus P. Schaefer; Adolfo Comeron; Michel R. Carleer; Richard H. Picard, Editor(s)

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