| 热带西太平洋海温异常对大气影响的数值模拟 |
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| 引用本文： | 徐启春.热带西太平洋海温异常对大气影响的数值模拟[J].中国海洋大学学报(自然科学版),1993(Z2). |
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| 作者姓名： | 徐启春 |
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| 作者单位： | 青岛海洋大学物理海洋研究所 |
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| 摘 要： | 用IAP-GCM二层楼式,模拟1月份西太平洋暖池区海温增暖对1-8月份大气环流的影响,初步探讨暖池区海温异常对我国夏季降水的影响过程。指出北半球500hPa环流场对暖地区1月份海温增暖的响应存在着PNA和EAP波列,在冬季较为明显。其能量传播特征表示为南北半球的中纬度地区基本上是向东传播,在热带低纬度地区存在着准2个月的低频振荡。
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| 关 键 词： | 西太平洋 海温增暖 大气遥响应 数值模拟 |
NUMERICAL SIMULATION OF THE INFLUENCE OF SST ANOMALY IN WESTERN TROPICAL PACIFIC |
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| Xu Qichun.NUMERICAL SIMULATION OF THE INFLUENCE OF SST ANOMALY IN WESTERN TROPICAL PACIFIC[J].Periodical of Ocean University of China,1993(Z2). |
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| Authors: | Xu Qichun |
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| Institution: | Institute of Physical Oceanography |
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| Abstract: | In this paper, an IAP two -layer atmospheric general circulation model is usec to simulate the influence of positive sea surface temperature anomaly (SSTA) in the "Warm Pool" in the Western tropical Pacific in January on the general circulation from January to August. The physical mechanism of the influence of SSTA in the "Warm Pool" on the summer rainfall in China is discussed. The results demonstrate that the teleresponse of the 500 hPa circulation in the North hemisphere to positive SSTA is in the patterns of PNA and EAP wavetrains, which are especially marked in winter. In the middle latitudes of both hemispheres, the spread in the response field and the low frequency oscillations prominently propagate eastward, whereas in the tropical low latitudes. there exists low frequency oscillations of 30-60 days. |
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| Keywords: | Western Pacific positive SSTA atmosphere teleresponse numerical simulation |
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