| DOI: | 10.1002/grl.50970
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| 论文题名: | Structural evolution of monsoon clouds in the Indian CTCZ |
| 作者: | Sengupta K.; Dey S.; Sarkar M.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8480
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| EISSN: | 1944-8211
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| 出版年: | 2013
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| 卷: | 40, 期:19 | | 起始页码: | 5295
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| 结束页码: | 5299
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| 语种: | 英语
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| 英文关键词: | Indian CTCZ
; Monsoon clouds
; Rainfall anomaly
; Vertical structure
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| Scopus关键词: | Aerosol concentration
; Aerosol optical depths
; Cloud effective radius
; Cloud vertical structure
; Indian CTCZ
; Positive rainfall anomalies
; Rainfall anomaly
; Vertical structures
; Atmospheric aerosols
; Rain
; Atmospheric thermodynamics
; aerosol
; climate modeling
; cloud classification
; cloud microphysics
; meteorology
; monsoon
; optical depth
; rainfall
; sensor
; India
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| 英文摘要: | Structural evolution of monsoon clouds in the core monsoon region of India has been examined using multisensor data. Invigoration of warm clouds above 4.5 km (occurring in only 15.4% days of the last 11 monsoon seasons) is associated with a transition from negative to positive normalized rainfall anomaly. Cloud top pressure reduces with an increase in aerosol optical depth at a higher rate of invigoration in drier condition (characterized by large fraction of absorbing aerosols) than wet condition. Cloud effective radius for warm clouds does not show any significant change with an increase in aerosol concentration in the presence of high liquid water path, probably due to strong buffering role of meteorology. The structural evolution of monsoon clouds is influenced by both dynamic and microphysical processes that prolong the cloud lifetime, resulting in infrequent rainfall. Our results call for improved representation of aerosol and cloud vertical structures in the climate models to resolve this issue. Key Points Transition to positive rainfall anomaly for cloud invigoration above 4.5 km Higher rate of invigoration in response to aerosols in drier condition At high liquid water path, cloud effective radius is insensitive to aerosols ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884951769&doi=10.1002%2fgrl.50970&partnerID=40&md5=c9246333e79d644d731707f6fa5f3d75
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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/5744
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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| Recommended Citation: | |
Sengupta K.,Dey S.,Sarkar M.. Structural evolution of monsoon clouds in the Indian CTCZ[J]. Geophysical Research Letters,2013-01-01,40(19).
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