DOI: 10.1016/j.atmosenv.2015.09.043
Scopus记录号: 2-s2.0-84942324741
论文题名: Enhancement in the upper tropospheric humidity associated with aerosol loading over tropical Pacific
作者: Kottayil A ; , Satheesan K
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 122 起始页码: 148
结束页码: 153
语种: 英语
英文关键词: Aerosols
; Longwave cloud radiative forcing
; Upper tropospheric humidity
; Water vapor feedback
Scopus关键词: Atmospheric aerosols
; Atmospheric radiation
; Budget control
; Troposphere
; Water vapor
; Aerosol loading
; Aerosol optical depths
; Cloud radiative forcing
; East Pacific
; Radiation budget
; Tropospheric humidity
; Water vapor feedbacks
; West pacific
; Aerosols
; aerosol
; cloud radiative forcing
; humidity
; longwave radiation
; optical depth
; radiation budget
; satellite data
; tropical region
; troposphere
; upper atmosphere
; water vapor
; aerosol
; Article
; circadian rhythm
; greenhouse effect
; humidity
; longwave cloud radiative forcing
; moisture
; optical depth
; Pacific Ocean
; particle size
; priority journal
; radiative forcing
; troposphere
; water vapor
; Pacific Ocean
; Pacific Ocean (Northeast)
; Pacific Ocean (Northwest)
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Many modeling studies have indicated that aerosol interactions with clouds increase the upper tropospheric humidity (UTH), but observational evidences are sparse. Using satellite datasets of upper tropospheric humidity and aerosols, this study shows that aerosols increase the upper tropospheric humidity over the tropical North West Pacific (NWP) and North East Pacific (NEP). The observations show an increase in the UTH by 2.8%RH over NEP for an increment of 0.12 in aerosol optical depth (AOD) and 2%RH increase in UTH over NWP for an increment of 0.19 in AOD. The study also quantifies the change in longwave cloud radiative forcing (LWCRF) as a consequence of the increase in UTH due to aerosols. The LWCRF increases by 3.38 W m-2 over NEP and by 4.46 W m-2 over NWP. The result that aerosols increase the upper tropospheric humidity is significant since the latter plays a crucial role in regulating the Earth's radiation budget and water vapor feedback. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81390
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Advanced Centre for Atmospheric Radar Research, Cochin University of Science and Technology, Kerala, India; National Centre for Antarctic and Ocean Research, Goa, India
Recommended Citation:
Kottayil A,, Satheesan K. Enhancement in the upper tropospheric humidity associated with aerosol loading over tropical Pacific[J]. Atmospheric Environment,2015-01-01,122