强热带气旋在高层流出层热力场的时空特征分析

Thermal Field Characteristic Analysis of Strong Tropical Cyclone Outflow

利用2010—2012年欧洲中心era-interim提供的再分析资料,分析了5个样本的强热带气旋的热力场的时空分布特征。得到了如下主要结论:强热带气旋存在1个中心位于300hPa的暖心结构和1个中心位于100hPa的冷心结构,冷暖区域的半径约为500 km。在强热带气旋整个发展消亡过程中,300hPa上存在一个中心距离气旋中心300 km的温度梯度大值区,100hPa高度上可以发现一个中心距离气旋中心500 km的温度梯度大值区。

The era-interim global re- analysis grid data have been employed to five strong tropical cyclone cases from 2010 to 2012 in order to diagnose the relationship between cyclone thermal field distribution characteristics. The main conclusions were as follows： There was a warm heart structure located in the center of 300 hPa and a cold core structure located in the center of 100 hPa, and the radius of the warm and cold re- gion was about 500 kin. In the development of strong tropical cyclones. In the process, the temperature gradient had a distance from the center of the cyclone center 300 km 300 hPa big value area, height of 100 hPa could be found on the temperature gradient of a distance from the center of the cyclone center 500 km big value area.