地表气温引入CESM模式对东亚地区夏季降水和环流场的影响

Effects of surface temperature introduced into CESM model on summer precipitation and annular flow field in East Asia

将地表气温分析场更新到CESM模式模拟场中,对比更新和未更新地表气温模拟得到的1980—2009年东亚地区夏季降水场和环流场各物理量的时空分布差异。结果表明,更新模式的地表气温、降水、水汽通量、纬向和经向环流场的模拟都得到明显改进,更新后的模拟场与再分析场的相关系数显著高于未更新的。

The surface temperature analysis field was updated to the simulation field of CESM,and the temporal and spatial distribu⁃tion differences of various physical quantities of summer precipitation field and circulation field in East Asia from 1980 to 2009 were compared between the updated and non updated surface temperature simulation.The results showed that the simulation of surface tem⁃perature,precipitation,water vapor flux,zonal and meridional circulation fields of the updated model had been significantly im⁃proved,and the correlation coefficient between the updated simulation field and the reanalysis field was significantly higher than that of the unupdated model.