大气科学学报2012，Vol.35Issue(4)：423-430,8.
土壤湿度对东亚夏季气候潜在可预报性影响的数值模拟
Numerical simulation of effect of soil moisture variability on potential predictability of summer climate over East Asia
摘要
Abstract
Two ensemble simulations for 22 boreal-summer seasons （1979-2000） are conducted by the Community Atmosphere Model version 3 （CAM3） with the specified observed sea surface temperature （SST）. Impacts of surface soil moisture（SSM） on the simulation of potential predictability of East Asi- an summer climate are investigated by the model with interannually varying SSM（ISSM） and climato- logical SSM（ CSSM）, respectively, based on the variance analysis method. Results show that, under the specified observed SST, the potential predictability of East Asian summer climate simulated by the CAM3 with ISSM is better than that with CSSM over East Asia, especially over Northwest China. The potential predictability of summer precipitation and air temperature over Northwest China from ISSM simulations is 0. 1 higher than that from CSSM simulations. A possible mechanism of influence of soil moisture on potential predictability of summer climate in Northwest China is proposed. The interannnal variability of ground evaporation and surface turbulent heat flux can be simulated by CAM3 with ISSM better than with CSSM in Northwest China, leading to the model forecast skill of the summer climate improved by the model with ISSM.关键词
潜在可预报性/夏季气候/土壤湿度/数值模拟Key words
potential predictability/summer climate/surface soil moisture/numerical simulation分类
天文与地球科学引用本文复制引用
李忠贤,陈海山,倪东鸿,曾刚..土壤湿度对东亚夏季气候潜在可预报性影响的数值模拟[J].大气科学学报,2012,35(4):423-430,8.基金项目
国家自然科学基金资助项目 （）
江苏省“333高层次人才培养工程”项目 （）
江苏高校优势学科建设工程资助项目 （）
