摘要
本文应用11层原始方程模式和一次实际降水个例对Kuo(1965)、Kuo(1974)以及Anthes(1977)对流参数化方案进行了初步试验,结果表明:考虑对流参数化后降水强度增加,但对降水落区影响很小,其中Anthes(1977)方案对降水的增加最多,Kuo(1965)方案增加最少。在三种参数化方案中,Kuo(1974)方案模拟出的对流降水比重最高,Anthes(1977)方案的对流降水比重最低,但是Anthes(1977)方案的反馈作用却最大,其影响的大尺度降水比不考虑对流作用时高出近10倍。由于模式还不够完善,降水的模拟与实况相比还有一定差距,但初步的结论是Anthes(1977)对流参数化方案效果较好,Kuo(1974)方案次之,不考虑对流作用时模拟的降水强度与实际相比太小。
Kuo(1965,1974) and Anthes(1977) convective parameterization schemes are respectively introduced to 11-layer, primitive equation model to simulate Meiyu precipita- tion on 27 June 1981. It is indicated that: convective parameterization plays an important role in increasing precipitation intensity. Anthes(1977) scheme increases the most and Kuo (1965) scheme increases the least. The convective precipitation propprtion simulated by Kuo(1974) scheme is the most and that of Anthes(1977) scheme is the least.But the feedback of Anthes(1977) scheme is the most among the three schemes. In general, the simulated results of Anthes(1977) scheme is the best. If non-convection is included in the model, the rain intensity is too little to model the real rain intensity.
出处
《南京大学学报（自然科学版）》
CAS
CSCD
1993年第1期172-179,共8页
Journal of Nanjing University（Natural Science）
关键词
对流参数化
降水
数值模拟
积云
Numerical model
Convective Parameterization
Precipitation Forecast
