| DOI: | 10.1002/2015GL064040
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| 论文题名: | Orientations and aspect ratios of falling snow |
| 作者: | Garrett T.J.; Yuter S.E.; Fallgatter C.; Shkurko K.; Rhodes S.R.; Endries J.L.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9567
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| EISSN: | 1944-9298
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| 出版年: | 2015
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| 卷: | 42, 期:11 | | 起始页码: | 4617
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| 结束页码: | 4622
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| 语种: | 英语
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| 英文关键词: | aspect ratio
; orientation
; radar
; riming
; snow
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| Scopus关键词: | Crystal orientation
; Microwave sensors
; Particle size
; Radar
; Snow
; Free fall
; Median value
; Orientation angles
; Precipitation retrievals
; Riming
; Theoretical study
; Aspect ratio
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| 英文摘要: | Photographs of nearly 73,000 snowflakes in free fall are used to determine the aspect ratio and orientation of aggregates, moderately rimed particles, and graupel. Observations indicate that there can be a much broader range of orientation angles, with a larger median value, than has been indicated by previous observational and theoretical studies. The data show that aspect ratio depends on riming extent but that orientation is only weakly dependent on the degree of riming and on particle size. Instead, more vertical orientations for frozen particles become increasingly common with higher turbulence. The results suggest that distributions of size, fall speed, orientation, and aspect ratio may each need to be considered in order to optimize the accuracy of precipitation retrievals using microwave sensors. ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84934443226&doi=10.1002%2f2015GL064040&partnerID=40&md5=6834e147abaa54f32e3eecd24f1fc70b
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9182
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Department of Atmospheric Sciences, University of Utah, Salt Lake City, UT, United States
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| Recommended Citation: | |
Garrett T.J.,Yuter S.E.,Fallgatter C.,et al. Orientations and aspect ratios of falling snow[J]. Geophysical Research Letters,2015-01-01,42(11).
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