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Microphysical Retrievals from Simultaneous Polarimetric and Profiling Radar Observations : Volume 27, Issue 12 (07/12/2009)

By Morris, M. P.

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Book Id: WPLBN0003977637
Format Type: PDF Article :
File Size: Pages 14
Reproduction Date: 2015

Title: Microphysical Retrievals from Simultaneous Polarimetric and Profiling Radar Observations : Volume 27, Issue 12 (07/12/2009)  
Author: Morris, M. P.
Volume: Vol. 27, Issue 12
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Chilson, P. B., Schuur, T. J., Morris, M. P., & Ryzhkov, A. (2009). Microphysical Retrievals from Simultaneous Polarimetric and Profiling Radar Observations : Volume 27, Issue 12 (07/12/2009). Retrieved from

Description: School of Meteorology/Atmospheric Radar Research Center, Norman, OK, USA. The character of precipitation detected at the surface is the final product of many microphysical interactions in the cloud above, the combined effects of which may be characterized by the observed drop size distribution (DSD). This necessitates accurate retrieval of the DSD from remote sensing data, especially radar as it offers large areal coverage, high spatial resolution, and rigorous quality control and testing. Combined instrument observations with a UHF wind profiler, an S-band polarimetric weather radar, and a video disdrometer are analyzed for two squall line events occuring during the calendar year 2007. UHF profiler Doppler velocity spectra are used to estimate the DSD aloft, and are complemented by DSDs retrieved from an exponential model applied to polarimetric data. Ground truth is provided by the disdrometer. A complicating factor in the retrieval from UHF profiler spectra is the presence of ambient air motion, which can be corrected using the method proposed by Teshiba et al. (2009), in which a comparison between idealized Doppler spectra calculated from the DSDs retrieved from KOUN and those retrieved from contaminated wind profiler spectra is performed. It is found that DSDs measured using the distrometer at the surface and estimated using the wind profiler and polarimetric weather radar generally showed good agreement. The DSD retrievals using the wind profiler were improved when the estimates of the vertical wind were included into the analysis, thus supporting the method of Teshiba et al. (2009). Furthermore, the the study presents a method of investigating the time and height structure of DSDs.

Microphysical retrievals from simultaneous polarimetric and profiling radar observations

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