DOI: 10.1002/2016GL067972
论文题名: Observational constraints on the efficiency of dehydration mechanisms in the tropical tropopause layer
作者: Rollins A.W. ; Thornberry T.D. ; Gao R.S. ; Woods S. ; Lawson R.P. ; Bui T.P. ; Jensen E.J. ; Fahey D.W.
刊名: Geophysical Research Letters
ISSN: 0094-9192
EISSN: 1944-8923
出版年: 2016
卷: 43, 期: 6 起始页码: 2912
结束页码: 2918
语种: 英语
英文关键词: cirrus
; dehydration
; stratospheric water vapor
; TTL
Scopus关键词: Clouds
; Efficiency
; NASA
; Transistor transistor logic circuits
; Tropics
; Water vapor
; Cirrus
; Entry point
; In-situ observations
; Mixing ratios
; Tropical tropopause
; Tropical tropopause layers
; Dehydration
; boundary layer
; cirrus
; dehydration
; efficiency measurement
; mixing ratio
; observational method
; stratosphere-troposphere interaction
; trajectory
; tropical meteorology
; tropopause
; water vapor
英文摘要: The efficiency of dehydration in the tropical tropopause layer (TTL) determines how closely water vapor will be reduced to the lowest saturation mixing ratio encountered along a trajectory to the stratosphere, thereby strongly influencing stratospheric humidity. The NASA Airborne Tropical Tropopause Experiment (ATTREX) provided an unprecedented number and quality of in situ observations to constrain the key mechanisms controlling this dehydration. Statistical analyses of the ATTREX data show that nucleation, growth, and sedimentation each result in TTL dehydration becoming increasingly inefficient at temperatures below 200 K. Because of these inefficiencies, models that ignore these mechanisms likely underestimate water vapor at the stratospheric entry point by ∼10-20% at the lowest temperatures. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977957816&doi=10.1002%2f2016GL067972&partnerID=40&md5=c4db05d845deedd31883c26d28cbb28b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10155
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: NOAA Earth System Research Laboratory, Boulder, CO, United States
Recommended Citation:
Rollins A.W.,Thornberry T.D.,Gao R.S.,et al. Observational constraints on the efficiency of dehydration mechanisms in the tropical tropopause layer[J]. Geophysical Research Letters,2016-01-01,43(6).