SST对台风“珍珠”影响的数值试验-海洋预报

SST对台风“珍珠”影响的数值试验

单位：1. 解放军理工大学气象学院江苏南京 211101;
2. 61221 部队北京 100091

分类号：P444

出版年·卷·期（页码）：2009·26·第三期（1-11）

摘要：

本文使用了最新的中尺度大气模式WRF模式,结合Nudging方法和自动移动嵌套方法,采用TRMM/TMI观测资料和NCEP1°×1°再分析资料,进行了5组数值试验,模拟了0601号台风"珍珠",分析了在台风作用下的海面降温对台风路径和强度的影响,对比各组模拟结果表明,SST的变化对台风路径和强度都有较大影响,采用了TRMM/TMI观测资料后,能够显著提高对热带气旋强度的模拟,此外,数值模式模拟结果还表明:SST每增加或减少1℃,热带气旋的最低气压大约增加/减少16hPa。

In this paper, the numerical simulation of Typhoon"Chanchu"is conducted by WRF which is the latest mesoscale meteorology numerical model. There are five groups of numerical experiments using different sources from TRMM/TMI observation data and NCEP 1°×1° reanalyse data. There are some conclusions from comparison of different groups’results. SST has substantial influence on the typhoon track and intensity. The best simulation of typhoon track is from the group which uses TRMM/TMI observation data. Besides, it is shown that the increase or decrease of SST, with average value of 1℃, causes a 16hPa strengthening or weakening of typhoon.

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