Aircraft Observations of Ice Crystal Evolution in an Altostratus CloudSource: Journal of the Atmospheric Sciences:;1999:;Volume( 056 ):;issue: 012::page 1925Author:Field, Paul R.
DOI: 10.1175/1520-0469(1999)056<1925:AOOICE>2.0.CO;2Publisher: American Meteorological Society
Abstract: Observations from a Lagrangian spiral descent within altostratus cloud associated with a cold front were used to study the evolution of ice particle spectra by following populations of ice crystals as they fell through the cloud. The flight track was corrected for wind effects and was divided into distinct regions for spatial comparison of ice particle spectra. Analysis of size spectra for particles larger than 800 ?m revealed heterogeneity on horizontal scales of 5 km in average particle diameter and concentration. In the temperature range ?40° to ?20°C the ice crystal evolution was dominated by diffusional growth, although observations of the evolution of the bimodal size spectra suggested that aggregation was occurring. Between ?20° and ?10°C aggregation dominated evolution.
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| contributor author | Field, Paul R. | |
| date accessioned | 2017-06-09T14:35:30Z | |
| date available | 2017-06-09T14:35:30Z | |
| date copyright | 1999/06/01 | |
| date issued | 1999 | |
| identifier issn | 0022-4928 | |
| identifier other | ams-22364.pdf | |
| identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4158806 | |
| description abstract | Observations from a Lagrangian spiral descent within altostratus cloud associated with a cold front were used to study the evolution of ice particle spectra by following populations of ice crystals as they fell through the cloud. The flight track was corrected for wind effects and was divided into distinct regions for spatial comparison of ice particle spectra. Analysis of size spectra for particles larger than 800 ?m revealed heterogeneity on horizontal scales of 5 km in average particle diameter and concentration. In the temperature range ?40° to ?20°C the ice crystal evolution was dominated by diffusional growth, although observations of the evolution of the bimodal size spectra suggested that aggregation was occurring. Between ?20° and ?10°C aggregation dominated evolution. | |
| publisher | American Meteorological Society | |
| title | Aircraft Observations of Ice Crystal Evolution in an Altostratus Cloud | |
| type | Journal Paper | |
| journal volume | 56 | |
| journal issue | 12 | |
| journal title | Journal of the Atmospheric Sciences | |
| identifier doi | 10.1175/1520-0469(1999)056<1925:AOOICE>2.0.CO;2 | |
| journal fristpage | 1925 | |
| journal lastpage | 1941 | |
| tree | Journal of the Atmospheric Sciences:;1999:;Volume( 056 ):;issue: 012 | |
| contenttype | Fulltext |