DOI: 10.1016/j.atmosres.2017.10.018
Scopus记录号: 2-s2.0-85033706427
论文题名: Enhanced daytime occurrence of clouds in the tropical upper troposphere over land and ocean
作者: Gupta A.K. ; Rajeev K. ; Sijikumar S. ; Nair A.K.M.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 201 起始页码: 133
结束页码: 143
语种: 英语
Scopus关键词: Clouds
; Tropics
; Altitudinal distributions
; Cloud enhancements
; Cloud types
; Convective clouds
; Radiative heating
; Tropical clouds
; Upper troposphere
; Vertical gradients
; Troposphere
; altitude
; CALIPSO
; CloudSat
; convection
; convective cloud
; heating
; ocean
; troposphere
英文摘要: Day-night changes in the altitudinal distribution of tropical clouds are examined using multi-year analyses of CloudSat and CALIPSO data. The combined occurrence of all cloud types maximizes in the nighttime throughout the middle and upper troposphere. In contrast to the nighttime maxima in the appearance of optically thick tropical clouds in the ~ 5–12 km altitude band, the occurrence of such clouds exhibit a pronounced daytime enhancement in the upper troposphere (> 12 km). This arises from the more frequent occurrence of thick cirrus and deeper penetration of daytime convective clouds to the upper troposphere, as evidenced from more frequent daytime occurrence of clouds with thickness > 9 km. Apart from the afternoon convection over land and remnant cirrus from nighttime convection over ocean, the daytime cloud enhancement observed above 12 km altitude might be also driven by the larger tropospheric net cloud radiative heating and its vertical gradient during the daytime. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108995
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram, India; National Atmospheric Research Laboratory, Gadanki, Tirupati, India
Recommended Citation:
Gupta A.K.,Rajeev K.,Sijikumar S.,et al. Enhanced daytime occurrence of clouds in the tropical upper troposphere over land and ocean[J]. Atmospheric Research,2018-01-01,201