| DOI: | 10.1002/grl.50622
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| 论文题名: | Dynamic simulation of rainfall kinetic energy flux in a cloud resolving model |
| 作者: | Nissan H.; Toumi R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8886
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| EISSN: | 1944-8617
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| 出版年: | 2013
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| 卷: | 40, 期:12 | | 起始页码: | 3331
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| 结束页码: | 3336
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| 语种: | 英语
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| 英文关键词: | climate model
; erosion
; kinetic energy
; microphysics
; rain
; raindrop
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| Scopus关键词: | Cloud resolving model
; Erosion predictions
; Microphysics
; Rain kinetic energy
; raindrop
; Rainfall kinetic energy
; Regional climate models
; Total kinetic energy
; Climate models
; Computer simulation
; Drops
; Erosion
; Forecasting
; Kinetic energy
; Kinetics
; Physics
; Rain
; climate modeling
; cloud microphysics
; energy flux
; kinetic energy
; raindrop
; rainfall
; soil erosion
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| 英文摘要: | We present the first simulation of rainfall kinetic energy flux in a cloud resolving model. This demonstrates the potential for conducting erosion prediction studies using a regional climate model. Soil erosion is already a major global problem, and there is growing pressure on our land to deliver food and stability. Rainfall kinetic energy flux is an important variable in erosion prediction but is generally parameterized from intensity due to measurement difficulties. We show that a cloud resolving model can be used to dynamically simulate the kinetic energy of rain from basic physics, using four microphysics schemes. Results are within the range of observations and also capture the observed variability in kinetic energy for a given intensity. Large drops are shown to contribute disproportionately to total kinetic energy compared with their number, suggesting that several existing relations between terminal velocity and size of raindrops are poorly suited for kinetic energy modeling. Key Points Microphysics schemes can model rain kinetic energy flux close to observations This captures observed variability in kinetic energy, where current methods fail Large raindrops are more important for rain and kinetic energy than supposed ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880533607&doi=10.1002%2fgrl.50622&partnerID=40&md5=57328a02b8df20cfd75c5311912c86d1
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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/6150
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Space and Atmospheric Physics Group, Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom
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| Recommended Citation: | |
Nissan H.,Toumi R.. Dynamic simulation of rainfall kinetic energy flux in a cloud resolving model[J]. Geophysical Research Letters,2013-01-01,40(12).
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