| DOI: | 10.1002/2015GL063839
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| 论文题名: | Aerosol effects on the timing of warm rain processes |
| 作者: | Dagan G.; Koren I.; Altaratz O.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9310
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| EISSN: | 1944-9041
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| 出版年: | 2015
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| 卷: | 42, 期:11 | | 起始页码: | 4590
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| 结束页码: | 4598
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| 语种: | 英语
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| 英文关键词: | cloud physics
; cloud-aerosol interactions
; warm rain
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| Scopus关键词: | Aerosols
; Precipitation (meteorology)
; Aerosol concentration
; Aerosol loading
; Bin microphysics
; Cloud condensation nuclei
; Cloud physics
; Convective clouds
; Optimal conditions
; Thermodynamic conditions
; Rain
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| 英文摘要: | Warm rain production as the end result of all clouds' processes is highly affected by aerosol loading and properties. Here an axisymmetric bin microphysics cloud model is used to study the aerosol's effects on the competition and synergy between processes in a single convective cloud, to provide a baseline for studies of aerosol effects on cloud fields. A new measure that considers the timing of processes is suggested for evaluating the optimal conditions for maximum rain yield. These conditions are linked to an optimal aerosol concentration (Nrain-op), which drives similar time intervals to maximum collected mass and to maximum vertical development. Nrain-op is a function of cloud size and thermodynamic conditions. Giant cloud condensation nuclei (GCCN) impact was shown before to precede the initiation of collision-coalescence and to increase the amount of rain from polluted clouds. Here we show that the GCCN effect is important only under aerosol conditions above Nrain-op. ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84934324122&doi=10.1002%2f2015GL063839&partnerID=40&md5=6566b82b2d6e84dafa951a7f55d7b31e
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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/8925
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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 Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot, Israel
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| Recommended Citation: | |
Dagan G.,Koren I.,Altaratz O.. Aerosol effects on the timing of warm rain processes[J]. Geophysical Research Letters,2015-01-01,42(11).
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