Influence of sea ice on the atmosphere: A study with an Arctic atmospheric regional climate model
Influence of sea ice on the atmosphere: A study with an Arctic atmospheric regional climate model
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DOI：
10.1029/2005jd006957
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发表时间：
2006-08
影响因子：
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通讯作者：
A. Rinke;W. Maslowski;K. Dethloff;J. Clement
中科院分区：
文献类型：
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作者：
A. Rinke;W. Maslowski;K. Dethloff;J. Clement
[1]利用一个北极大气区域气候模式，研究了海洋网格点上的海表温度（SST）、海冰分数和海冰厚度等低边界强迫对平均大气模拟的影响。评估表明，海冰/SST强迫对大气模拟有影响。近地面气温的响应表现出强烈的，季节性依赖的海冰变化的敏感性。这种响应在夏季很小，但在冬季很明显，边缘冰区的变化对大气的影响最大。在冬季，边缘海冰区的真实再现是重要的，因为它有助于模拟区域大气环流模式和温度廓线。北极西部下边界海冰厚度的变化表明，在大尺度环流的北极范围内的响应，似乎有对流层平流层耦合的影响。在夏季，海冰变化的直接热力效应很小，而动力响应仍然是重要的，但小于冬季。
[1] The impact of the lower-boundary forcing over ocean grid points, namely of sea surface temperature (SST), sea ice fraction, and sea ice thickness, on the mean atmospheric simulation is investigated with an Arctic atmospheric regional climate model. The assessment shows that the sea ice/SST forcing has an impact on the atmospheric simulations. The near-surface air temperature response shows a strong, seasonally dependent sensitivity to sea ice changes. The response is small in summer but significant in winter, and changes in the marginal ice zone have the largest impact on the atmosphere. During winter, the realistic representation of the marginal sea ice zone is important as it contributes to the simulation of regional atmospheric circulation patterns and temperature profiles. Changes in sea ice thickness of the western Arctic lower boundary indicate an Arctic-wide response in the large-scale circulation and seem to have an impact on the troposphere-stratosphere coupling. During summer the direct thermodynamic effect of sea ice changes is small, while the dynamic response is still of importance but smaller than in winter.