Antarctic winter tropospheric warming - the potential role of polar stratospheric clouds, a sensitivity study

被引:6
作者
Lachlan-Cope, T. A. [1 ]
Connolley, W. M. [1 ]
Turner, J. [1 ]
Roscoe, H. [1 ]
Marshall, G. J. [1 ]
Colwell, S. R. [1 ]
Hoepfner, M. [2 ]
Ingram, W. [3 ,4 ]
机构
[1] British Antarctic Survey, Nat Environm Res Council, Cambridge CB3 0ET, England
[2] Forschungszentrum Karlsruhe, Inst Meteorol & Klimaforsch, D-76021 Karlsruhe, Germany
[3] Univ Oxford, Dept Phys, Exeter, Devon, England
[4] Met Off, Hadley Ctr, Exeter, Devon, England
来源
ATMOSPHERIC SCIENCE LETTERS | 2009年 / 10卷 / 04期
关键词
polar meteorology; polar stratospheric clouds; climate change; LIDAR;
D O I
10.1002/asl.237
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Over the last 30 years, Antarctic mid-tropospheric temperatures in winter have increased by 0.5 K per decade, the largest regional tropospheric warming observed. Over this period, amounts of polar stratospheric cloud(PSC) have also increased, as rising CO2 concentrations cooled the stratosphere. By imposing an idealisation of these increases in PSC within the radiation scheme of an atmosphere-only general circulation model, we find that they could have contributed to the observed warming. The present generation of global climate models do not properly represent PSCs, and so these results demonstrate the need to improve the representation of PSCs. Copyright. (C) 2009 Royal Meteorological Society and Crown Copyright
引用
收藏
页码:262 / 266
页数:5
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