DOI: 10.1002/2016GL067991
论文题名: Transport of ice into the stratosphere and the humidification of the stratosphere over the 21st century
作者: Dessler A.E. ; Ye H. ; Wang T. ; Schoeberl M.R. ; Oman L.D. ; Douglass A.R. ; Butler A.H. ; Rosenlof K.H. ; Davis S.M. ; Portmann R.W.
刊名: Geophysical Research Letters
ISSN: 0094-9299
EISSN: 1944-9030
出版年: 2016
卷: 43, 期: 5 起始页码: 2323
结束页码: 2329
语种: 英语
英文关键词: convective ice
; stratospheric water vapor
; TTL
Scopus关键词: Gas emissions
; Greenhouse gases
; Ice
; Transistor transistor logic circuits
; Water vapor
; Chemistry-climate models
; Climate warms
; Interannual time scale
; Lower stratosphere
; Meteorological fields
; Model communities
; Temperature variation
; Tropical tropopause layers
; Climate models
英文摘要: Climate models predict that tropical lower stratospheric humidity will increase as the climate warms. We examine this trend in two state-of-the-art chemistry-climate models. Under high greenhouse gas emissions scenarios, the stratospheric entry value of water vapor increases by ~1 ppmv over the 21st century in both models. We show with trajectory runs driven by model meteorological fields that the warming tropical tropopause layer (TTL) explains 50-80% of this increase. The remainder is a consequence of trends in evaporation of ice convectively lofted into the TTL and lower stratosphere. Our results further show that within the models we examined, ice lofting is primarily important on long time scales; on interannual time scales, TTL temperature variations explain most of the variations in lower stratospheric humidity. Assessing the ability of models to realistically represent ice lofting processes should be a high priority in the modeling community. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960428563&doi=10.1002%2f2016GL067991&partnerID=40&md5=418a38a07ebefdbd940bb50d7e142c43
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10262
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 Atmospheric Sciences, Texas AandM University, College Station, Texas, United States
Recommended Citation:
Dessler A.E.,Ye H.,Wang T.,et al. Transport of ice into the stratosphere and the humidification of the stratosphere over the 21st century[J]. Geophysical Research Letters,2016-01-01,43(5).