Effects of cumulus convection on the simulated monsoon circulation in a general circulation model
Effects of cumulus convection on the simulated monsoon circulation in a general circulation model
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DOI：
10.1175/1520-0493(1994)122
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发表时间：
1994-09
影响因子：
3.2
通讯作者：
Guang J. Zhang
中科院分区：
文献类型：
--
作者：
Guang J. Zhang
利用大气环流模式研究了积云对流对亚洲夏季风环流的影响。对夏季月份(6月、7月和8月)进行了两次模拟，一次使用质量通量方案进行对流参数化，另一次不使用对流参数化。结果表明，对流对季风环流及其伴生降水有显著影响。在有质量通量对流参数化的模拟中，西太平洋降水减少，地面蒸发和风速减少。在印度季风区，情况几乎正好相反。与湿对流调整对流参数化模拟的对比表明，无对流模拟的季风环流和降水分布与湿对流调整模拟的季风环流和降水分布非常相似。分析了有无对流参数时大尺度环流的差异。
Abstract The effect of cumulus convection on the Asian summer monsoon circulation is investigated, using a general circulation model. Two simulations for the summer months (June, July, and August) are performed, one parameterizing convection using a mass flux scheme and the other without convective parameterization. Thee results show that convection has significant effects on the monsoon circulation and its associated precipitation. In the simulation with the mass flux convective parameterization, precipitation in the western Pacific is decreased, together with a decrease in surface evaporation and wind speed. In the Indian monsoon region it is almost the opposite. Comparison with a simulation using moist convective adjustment to parameterize convection shows that the monsoon circulation and precipitation distribution in the no-convection simulation are very similar to those in the simulation with moist convective adjustment. The difference in the large-scale circulation with and without convective parame...