Observing Precipitation through Dual-Polarization Radar MeasurementsSource: Bulletin of the American Meteorological Society:;1992:;volume( 073 ):;issue: 009::page 1365DOI: 10.1175/1520-0477(1992)073<1365:OPTDPR>2.0.CO;2Publisher: American Meteorological Society
Abstract: Dual-polarization radar measurements of precipitation are primarily influenced by the size, shape, orientation, and phase of scattering hydrometeors. As a result, these measurements can serve as a tool for remote identification of hydrometeor characteristics. This paper presents an overview of the definitions, observed values, and applications of differential reflectivity (ZDR) and linear depolarization ratio (LDR) measurements. Brief examples of these measurements are given for widespread stratiform precipitation, a rapidly developing convective cell, and a severe hailstorm. The results outline the role that ZDR can play in the differentiation of rain and solid precipitation, identification of supercooled raindrops above the 0°C level, and identification of hail at the surface. LDR measurements are seen to reveal contrasts in ice-particle shape, orientation, and particle phase. These contrasts are of particular benefit toward delineation of hail regions aloft and identification of mixed-phase particle growth environments.
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contributor author | Herzegh, Paul H. | |
contributor author | Jameson, Arthur R. | |
date accessioned | 2017-06-09T14:41:04Z | |
date available | 2017-06-09T14:41:04Z | |
date copyright | 1992/09/01 | |
date issued | 1992 | |
identifier issn | 0003-0007 | |
identifier other | ams-24413.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4161083 | |
description abstract | Dual-polarization radar measurements of precipitation are primarily influenced by the size, shape, orientation, and phase of scattering hydrometeors. As a result, these measurements can serve as a tool for remote identification of hydrometeor characteristics. This paper presents an overview of the definitions, observed values, and applications of differential reflectivity (ZDR) and linear depolarization ratio (LDR) measurements. Brief examples of these measurements are given for widespread stratiform precipitation, a rapidly developing convective cell, and a severe hailstorm. The results outline the role that ZDR can play in the differentiation of rain and solid precipitation, identification of supercooled raindrops above the 0°C level, and identification of hail at the surface. LDR measurements are seen to reveal contrasts in ice-particle shape, orientation, and particle phase. These contrasts are of particular benefit toward delineation of hail regions aloft and identification of mixed-phase particle growth environments. | |
publisher | American Meteorological Society | |
title | Observing Precipitation through Dual-Polarization Radar Measurements | |
type | Journal Paper | |
journal volume | 73 | |
journal issue | 9 | |
journal title | Bulletin of the American Meteorological Society | |
identifier doi | 10.1175/1520-0477(1992)073<1365:OPTDPR>2.0.CO;2 | |
journal fristpage | 1365 | |
journal lastpage | 1374 | |
tree | Bulletin of the American Meteorological Society:;1992:;volume( 073 ):;issue: 009 | |
contenttype | Fulltext |