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Interpretation of Polarization Features in Ground-Based Microwave Observations as Caused by Horizontally Aligned Oblate Raindrops

Czekala, H. and Crewell, S. and Simmer, C. and Thiele, A. and Hornbostel, A. and Schroth, A. (2001) Interpretation of Polarization Features in Ground-Based Microwave Observations as Caused by Horizontally Aligned Oblate Raindrops. Journal of Applied Meteorology, 40 (11), pp. 1918-1932.

Full text not available from this repository.

Abstract

Based on comparision of ground-based radiometer measurements with microwave radiative transfer calculations it is shown that raindropswith oblate shape and preferred horizontal orientation have a significant effect on microwave polarization signals when compared with spherical perticle shape. Measurements with dual-polarized 19-GHz radiometer reveal a polarization difference of as much as -18K in the downwelling microwave radiation at 30 degree elevation angle. Averaging of all rain observations within 19 months leads to a polarization difference of -6K. The averaged model results for oblate raindrops lead to a polarization difference of -8K, which is in reasonable agreement with long-term averaged observations.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2002,
Title:Interpretation of Polarization Features in Ground-Based Microwave Observations as Caused by Horizontally Aligned Oblate Raindrops
Authors:
AuthorsInstitution or Email of Authors
Czekala, H.Department of Applied Physics and Mathematics, Columbia University, and NASA Goddard Institute for Space Studies
Crewell, S.Meteorologisches Institut der Universität Bonn
Simmer, C.Meteorologisches Institut der Universität Bonn
Thiele, A.Meteorologisches Institut der Universität Bonn
Hornbostel, A.UNSPECIFIED
Schroth, A.UNSPECIFIED
Date:2001
Journal or Publication Title:Journal of Applied Meteorology
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:40
Page Range:pp. 1918-1932
Status:Published
Keywords:Radiometrie, Polarisation, Regen, Strahlungstransfer
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W KN - Kommunikation/Navigation
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 21:01

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