期刊
DYNAMICS OF ATMOSPHERES AND OCEANS
卷 52, 期 3, 页码 367-385出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.dynatmoce.2011.05.002
关键词
Typhoon; Barrier layer; Sea surface cooling; Tropical Northwest Pacific
资金
- National Basic Research Program of China [2007CB816001]
- National Natural Science Foundation of China [41030854, 40906015, 40906016]
Both Argo measurements and satellite sea surface temperature (SST) data revealed that there was less-than-usual surface cooling during the passage of typhoons Kaemi and Cimaron in the tropical Northwest Pacific. In the present study, it is found that SST cooling induced by typhoon can be greatly suppressed by a barrier layer with a thickness of 5-15 m. Such a barrier layer could reduce the entrainment cooling by 0.4-0.8 degrees C/d during typhoon passage, according to a diagnostic mixed layer model. The pre-existing barrier layer leads to a reduction in typhoon-induced surface cooling, and favors typhoon development. The average SST anomaly under barrier layer condition is 0.4-0.8 degrees C less than that under no-barrier-layer condition. Due to the reduced cooling, the available maximum potential intensity (MPI) under barrier layer condition are higher 6 and 9.34 m/s than those under no-barrier-layer condition according to SST-dependent MPI formulation for Kaemi and Cimaron. In addition, the results from Price-Weller-Pinkel (PWP) model indicate that stratification due to salinity may significantly influence both entrainment and the upper ocean heat content during typhoon passage in the tropical Northwest Pacific. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据