Betts对流调整方案在移动套网格台风数值模式中的初步试验

Betts对流调整方案采用的是垂直温湿场向观测的准平衡热力结构松驰的方法。本文在一个考虑了台风初值化的移动套网格台风数值模式中，对Betts方案进行了初步试验。结果表明：Betts方案能较好的预报出台风移动的路径和降水过程，并在台风路径、降水落区预报以及对流增温的垂直分布等方面都略优于Kuo方案的预报结果。

EXPERIMENT OF A MOVABLE NESTED TYPHOON NUMERICAL MODEL WITH THE BETTS SCHEME

Betts convective parameterization scheme is tested in a movable oneway nested mesh typhoon model with the typhoon initialization. The convective adjustment scheme adjusts the local temperature and moisture structures towards the observed quasl-equilibrium thermodynamic state and includes nonprecipitating shallow convection as well as deep convection.The numerical experiment is performed and results show that the convective scheme is capable of better simulating the typhoon track and precipitation, and it is better than that of Kuo scheme in typhoon track and precipitation area and convective heating profile.