DOI: 10.1002/jgrd.50772
论文题名: Temperature trends in the tropical upper troposphere and lower stratosphere: Connections with sea surface temperatures and implications for water vapor and ozone
作者: Garfinkel C.I. ; Waugh D.W. ; Oman L.D. ; Wang L. ; Hurwitz M.M.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 17 起始页码: 9658
结束页码: 9672
语种: 英语
英文关键词: SST trends
; stratospheric ozone
; stratospheric temperature trends
; stratospheric water vapor
; TTL
Scopus关键词: Atmospheric temperature
; Atmospherics
; Carbon dioxide
; Climate models
; Experiments
; Lakes
; Methane
; Ozone
; Ozone layer
; Transistor transistor logic circuits
; Tropics
; Troposphere
; Water vapor
; Chemistry-climate models
; Lower stratospheric temperature
; Satellite observations
; Sea surface temperature (SST)
; SST trends
; Stratospheric ozone
; Stratospheric temperature
; Tropical temperatures
; Oceanography
; air-sea interaction
; carbon dioxide
; climate modeling
; heating
; ozone
; satellite imagery
; sea surface temperature
; stratosphere
; temperature effect
; tropical environment
; tropopause
; troposphere
; upper atmosphere
; water vapor
; Indian Ocean
; Pacific Ocean
英文摘要: Satellite observations and chemistry-climate model experiments are used to understand the zonal structure of tropical lower stratospheric temperature, water vapor, and ozone trends. The warming in the tropical upper troposphere over the past 30 years is strongest near the Indo-Pacific warm pool, while the warming trend in the western and central Pacific is much weaker. In the lower stratosphere, these trends are reversed: the historical cooling trend is strongest over the Indo-Pacific warm pool and is weakest in the western and central Pacific. These zonal variations are stronger than the zonal-mean response in boreal winter. Targeted experiments with a chemistry-climate model are used to demonstrate that sea surface temperature (hereafter SST) trends are driving the zonal asymmetry in upper tropospheric and lower stratospheric tropical temperature trends. Warming SSTs in the Indian Ocean and in the warm pool region have led to enhanced moist heating in the upper troposphere, and in turn to a Gill-like response that extends into the lower stratosphere. The anomalous circulation has led to zonal structure in the ozone and water vapor trends near the tropopause, and subsequently to less water vapor entering the stratosphere. The radiative impact of these changes in trace gases is smaller than the direct impact of the moist heating. Projected future SSTs appear to drive a temperature and water vapor response whose zonal structure is similar to the historical response. In the lower stratosphere, the changes in water vapor and temperature due to projected future SSTs are of similar strength to, though slightly weaker than, that due directly to projected future CO2 , ozone, and methane. Key Points Zonal variations in TTL temperature trend are same magnitude as zonal mean trendSST trends have caused these zonal variationsThese zonal variations influence ozone and water vapor in UTLS ©2013. American Geophysical Union. All Rights Reserved. 资助项目: AGS-1036858
; ATM-0905863
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63338
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Earth and Planetary Science, Johns Hopkins University, Baltimore, MD, United States; Institute of Earth Sciences, Hebrew University, Givat Ram Jerusalem, 91904, Israel; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Goddard Earth Sciences Technology and Research (GESTAR), Morgan State University, Baltimore, MD, United States
Recommended Citation:
Garfinkel C.I.,Waugh D.W.,Oman L.D.,et al. Temperature trends in the tropical upper troposphere and lower stratosphere: Connections with sea surface temperatures and implications for water vapor and ozone[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(17)