Impact of the 2002, Southern Hemisphere, stratospheric warming on the tropical cirrus clouds and convective activity
Impact of the 2002, Southern Hemisphere, stratospheric warming on the tropical cirrus clouds and convective activity
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DOI：
10.1029/2006gl028744
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发表时间：
2007-03
影响因子：
5.2
通讯作者：
N. Eguchi;K. Kodera
中科院分区：
文献类型：
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作者：
N. Eguchi;K. Kodera
利用MODIS/Terra卫星资料研究了2002年9月南半球平流层突然变暖引起的热带卷云变化。在SSW期间，增强的波浪强迫在热带平流层中引起上升流，该上升流进一步延伸到赤道对流层。对流层上升流的这种初始扰动在热带对流层南部发展，通过低层物质和水汽辐合的增加导致深层对流。卷云最初是由与SSW相关的上升流导致的低温形成的，并且由于SSW触发的深对流的开尔文波响应导致的低温，它在SSW结束后持续了几周。
Tropical cirrus cloud variation associated with the southern hemisphere stratospheric sudden warming (SSW) in September 2002 was investigated using data from MODIS/Terra. During the SSW, enhanced wave forcings induced upwelling in the tropical stratosphere, which further extended into the equatorial troposphere. This initial perturbation of the tropospheric upwelling developed in the southern tropical troposphere through increased mass‐ and water vapor convergence in the lower level leading to deep convection. Cirrus cloud was first formed by the low temperature due to upwelling associated with the SSW, and it persisted for a few weeks after the end of SSW due to the low temperature associated with the Kelvin‐wave response to a deep convection triggered by the SSW.