Effects of ozone cooling in the tropical lower stratosphere and upper troposphere

被引：67
作者：
Forster, Piers M. [1 ]
Bodeker, Greg [2 ]
Schofield, Robyn [3 ,4 ,5 ]
Solomon, Susan [3 ]
Thompson, David [6 ]
机构：
[1] Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England
[2] Natl Inst Water & Atmospher Res, Lauder, New Zealand
[3] NOAA, Div Chem Sci, Earth Syst Res Lab, Boulder, CO USA
[4] Univ Colorado, Coop Inst Res Environm Sci, Boulder, CO USA
[5] Alfred Wegener Inst Polar & Marine Res, Potsdam, Germany
[6] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 2007年 / 34卷 / 23期
基金：
英国自然环境研究理事会;
关键词：
D O I：
10.1029/2007GL031994
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
In this paper, we examine the tropical lower stratosphere and upper troposphere and elucidate the key role of ozone changes in driving temperature trends in this region. We use a radiative fixed dynamical heating model to show that the effects of tropical ozone decreases at 70 hPa and lower pressures can lead to significant cooling not only at stratospheric levels, but also in the ''sub-stratosphere/ upper tropospheric'' region around 150-70 hPa. The impact of stratospheric ozone depletion on upper tropospheric temperatures stems from reduced longwave emission from above. The results provide a possible explanation for the long-standing discrepancy between modeled and measured temperature trends in the uppermost tropical troposphere and can explain the latitudinal near-homogeneity of recent stratospheric temperature trends.
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页数：5
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