Recent trends in sea level pressure in the Indian Ocean region
Recent trends in sea level pressure in the Indian Ocean region
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DOI：
10.1029/2006gl027175
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发表时间：
2006-10-14
影响因子：
5.2
通讯作者：
Knight, Jeff R.
中科院分区：
文献类型：
--
作者：
Copsey, Dan;Sutton, Rowan;Knight, Jeff R.
在二十世纪后半叶，印度洋的海面温度迅速上升。有人认为-主要是根据对大气环流模式的实验-这种迅速变暖是造成遥远的气候变化的一个重要原因，特别是北大西洋振荡指数的上升趋势和非洲降雨量的减少。然而，在这里，我们提出的证据表明，印度洋变暖与当地海平面压力（SLP）的增加。这些增加是不一致的实验结果，其中大气GCM被迫由历史SST，这表明强劲的SLP下降。SLP观测趋势与模拟趋势之间的明显差异表明，某些大气GCM对印度洋变暖的反应可能无法为真实的世界的行为提供可靠的指导。
During the second half of the twentieth century the Indian Ocean exhibited a rapid rise in sea surface temperatures (SST). It has been argued - largely on the basis of experiments with atmospheric GCMs - that this rapid warming was an important cause of remote changes in climate, in particular an increasing trend in the North Atlantic Oscillation Index and decreases in African rainfall. Here however we present evidence that the Indian Ocean warming was associated with local increases in sea level pressure (SLP). These increases are inconsistent with results from experiments in which an atmospheric GCM is forced by historical SST, which show robust decreases in SLP. The clear discrepancy between the observed and simulated trends in SLP suggests that the response of some atmospheric GCMs to the Indian Ocean warming may not provide a reliable guide to the behaviour of the real world.