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contributor authorBattan, Louis J.
contributor authorTheiss, John B.
date accessioned2017-06-09T17:23:10Z
date available2017-06-09T17:23:10Z
date copyright1972/09/01
date issued1972
identifier issn0021-8952
identifier otherams-8426.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4227578
description abstractObservations of Doppler spectra from particles 610 m above the ground were obtained by means of a vertically pointing X-band radar during a period when large hail was falling at the ground. It was found that the variance of the Doppler spectrum was a fairly good indicator of maximum hailstone sizes. Calculations of ice-particle size spectra were made on the basis of assumptions of particle shape, composition and fallspeed. The many assumptions needed to bring calculated ice-sphere spectra into approximate conformity with observations indicates the complexity of this procedure and the need for at least another independent observation of a property of the hailstones. Measurements of depolarization might yield an independent estimate of particle shape. It is concluded that the pronounced minima in the backscattering curves of large ice spheres should serve as an independent indicator of the speed of vertical air motions.
publisherAmerican Meteorological Society
titleObserved Doppler Spectra of Hail
typeJournal Paper
journal volume11
journal issue6
journal titleJournal of Applied Meteorology
identifier doi10.1175/1520-0450(1972)011<1001:ODSOH>2.0.CO;2
journal fristpage1001
journal lastpage1007
treeJournal of Applied Meteorology:;1972:;volume( 011 ):;issue: 006
contenttypeFulltext


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