区域气候模式中侧边界地形缓冲区作用的数值试验  

Numerical Experiments on the Effects of Lateral Boundary Topographic Buffer Zone in Regional Climate Model

作　　者：钟中[1] 苏炳凯[1] 赵鸣[1] 汤剑平[1] 

机构地区：[1]南京大学大气科学系,江苏南京210093

出　　处：《高原气象》2004年第1期48-54,共7页Plateau Meteorology

基　　金：国家重点基础研究发展规划项目(G1999043400);国家自然科学基金项目(40275021)共同资助

摘　　要：利用区域环境系统集成模式以1998年夏季为例,通过数值试验研究了侧边界地形缓冲区对区域气候模拟结果的影响。结果表明,设置侧边界地形缓冲区使模拟场和观测的均方根误差都有所减小,区域平均中尺度动能也减小,从而有利于维持区域模式长期积分的稳定性。设置地形缓冲区并不改变模拟降水分布格局,但对主要降水区各降水时段降水强度的模拟有不同程度的改进。The regional integrated environmental model system (RIEMS) is used to test the effects of lateral boundary topographic buffer zone on the simulation of climate in East Asia. The results suggest that the root-mean-square error between simulation and observation is decreased when the regional model is conducted with the topographic buffer zone, and so does the meso-scale kinetic energy in model domain, which would be benefit for the long-range integration of regional model. It also shows that the quantitative precipitation simulation is improved with the buffer zone, whereas there is no significant change in precipitation scenario, especially in northern part of China.

关 键 词：侧边界 地形缓冲区 区域气候模式 数值试验 

分 类 号：P456.7[天文地球—大气科学及气象学]