The vertical structure of the lower Arctic troposphere analysed from observations and the ERA‐40 reanalysis
The vertical structure of the lower Arctic troposphere analysed from observations and the ERA‐40 reanalysis
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DOI：
10.1002/qj.380
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发表时间：
2009
影响因子：
8.9
通讯作者：
M. Tjernström;R. Graversen
中科院分区：
文献类型：
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作者：
M. Tjernström;R. Graversen
在北极中部进行的现场大气观测很少，而且大部分是从地表附近进行的。大多数来自沿海地区，而北冰洋的探测很少。这限制了我们对北极大气的了解，特别是高空。已经确定的是，垂直热结构往往是稳定的分层，这被称为“北极逆温”。人们还确定，在过去几十年中，北极近地表变暖大于全球平均变暖。为了估计这一数据稀少地区的气候趋势，经常使用再分析数据。
In situ atmospheric observations in the central Arctic are few and mostly from near the surface. A majority are from coastal regions whereas soundings over the Arctic Ocean are rare. This limits our understanding of the Arctic atmosphere, in particular aloft. It has been established that the vertical thermal structure is often stably stratified; this has been termed the ‘Arctic inversion’. It has also been established that near‐surface warming in the Arctic has been larger than the global mean warming during the last several decades. To estimate climate trends in this data‐sparse region, reanalysis data have often been used.