大气科学2017，Vol.41Issue(3)：515-532,18.DOI:10.3878/j.issn.1006-9895.1606.16151
MRI模式对华南春雨气候态及年际变率的模拟:不同模式分辨率的比较
Simulation of Climatology and Interannual Variability of Spring Persistent Rains by MRI Model: Comparison of Different Horizontal Resolutions
摘要
Abstract
This study evaluated the performance of Meteorological Research Institute of Japan (MRI) atmospheric general circulation models (AGCMs) that participated in the Couple Model Intercomparison Project 5 (CMIP5),focusing on climatology and interarnual variability of the Spring Persistent Rains (SPR) over southeastern China.Simulations of different horizontal resolutions (i.e.,120,60,and 20 km) were also compared.The model could reasonably reproduce the main rainfall center over southeastern China in boreal spring under the three different resolutions.In comparison with the 120-km simulation,the simulation with 20-km resolution gave better results in simulating rainfall centers located in the Nanling-Wuyi Mountains,but overestimated rainfall intensity.Water vapor budget diagnosis showed that,both the 60 km and 20 km simulations tended to overestimate the water vapor convergence over southeastern China,which led to wet biases.With regard to interannual variability of SPR,the model could reasonably reproduce the anomalous lower-tropospheric anticyclone in the western North Pacific (WNPAC) and positive precipitation anomalies over southeastern China in the E1Nino decaying spring.Compared with that of the 120-km simulation,the large positive biases were substantially reduced in the 60-km and 20-km resolution simulations because the horizontal moisture advection in E1 Nino decaying spring was more realistically simulated.The results highlight the importance of developing high resolution climate model for improving the simulation of climatology and interannual variability of SPR.关键词
MRI华南春雨/高分辨率模式/气候态/水汽收支诊断/年际变率Key words
MRI (Meteorological Research Institute)/SPR (Spring Persistent Rains)/High-resolution model/Climatology/Water vapor budget diagnosis/Interannual variability分类
天文与地球科学引用本文复制引用
李普曦,周天军,邹立维,陈晓龙,张文霞,郭准..MRI模式对华南春雨气候态及年际变率的模拟:不同模式分辨率的比较[J].大气科学,2017,41(3):515-532,18.基金项目
国家自然科学基金41420104006、41330423,公益性行业(气象)科研专项GYHY201506012,“气候变化”江苏高校协同创新中心 （气象）
National Natural Science Foundation of China (NSFC) (Grants 41420104006,41330423),Special Scientific Research Fund of Meteorological Public Welfare Profession of China (Grant GYHY201506012),Jiangsu collaborative Innovation center for climate change （NSFC）
