Observational Fact of Non-Convective Clouds andIts Significance on the Design of Atmospheric General Circulation Model
非对流云的观测事实及其对大气环流模式设计的意义

With climatological data analysis and case study about those clouds, the following results have been demonstrated. (a) Those clouds have seasonal variation, and they depend on land-sea distri- bution, atmospheric general circulation and monsoon. These processes are interaction. (b) The three kinds of those clouds, originated from the condensation by upward air motion on large scale, from the semipermant subtropical anticyclones off the west coasts and anvils by deep cumulus convection in ITCZ, should be represented explicitly in AGCM. However, those clouds are not simulated well. Thus, further research about them is important and necessary. (c) In designing them in AGCM, the formation, dissipation, advection and radiation about those clouds should be considered. (d) The clouds from mesoscale should be parameterized in AGCM or the smaller grid length should be introduced in AGCM in future. (e) Precipitation processes should be parameterized in detail because of their faster movement than the other processes.