张庆红
点赞：
张庆红
点赞：
论文成果
华南梅雨锋上中尺度对流系统的数值模拟
发布时间：2022-10-08点击次数：
影响因子：
1.649
DOI码：
10.1007/BF03183534
发表刊物：
Chinese Science Bulletin
摘要：
A mesoscale convective system (MCS) was generated over the South China Sea at around 115 degreesE, 21 degreesN on 0000 UTC 7 June 1998. Riding along the Mei-Yu front, the system moved through the Taiwan Strait and finally hit the southern part of the Taiwan Island, produced over 300 mm of rainfall over parts of Taiwan in the next 24 hours. It was found that the Penn State-NCAR Mesoscale Model Version 5 (MM5) did quite well in simulating the evolution of the MCS. Diagnostic studies on the mesoscale structure of MCS, moisture concentration process and the momentum budget were based on the model output. The concept model of the MCS in the mature phase can be concluded as the following: At the 850 hPa level, the mesoscale low level jet (mLLJ) was found to the southwest of the MCS, which was also associated with a mesoscale low generated by convection, the mesoscale upper level jet (mULJ) was found due east of the MCS (and an upper-level mesoscale high) at the 300 hPa level. Horizontal advection of momentum acted to accelerate the exit of the mLLJ but decelerate the entrance of the mLLJ where the pressure gradient force acted to compensate this lost and maintain its strength. For maintenance of the mULJ, vertical advection of momentum and the pressure gradient force were both found to be important.
卷号：
45
期号：
22
页面范围：
2093–2096
是否译文：
否
发表时间：
2000-11-01
附件：