大气科学2011，Vol.35Issue(4)：683-693,11.
大气环流模式CAM中土壤冻融过程改进对东亚气候模拟的影响
Impact of Improved Soil Freezing Process on Climate in East Asia Using NCAR CAM Model
摘要
Abstract
An improved frozen soil parameterization scheme is introduced and its effects on climate in East Asia are investigated by using the latest version of general circulation model (GCM) CAM3. 1 developed at NCAR. Simulation results show that the improved soil freezing process leads to enhanced heating of the earth's surface by the atmosphere over most parts of Eurasia in winter, while it leads to enhanced heating of the atmosphere by the earth's surface in summer, especially the abnormal heating is significantly strengthened over the Tibetan Plateau. The climate in East Asia is very sensitive to the frozen soil parameterization with notable change of the surface air temperature in both winter and summer. With the improved soil freezing process, the simulated Siberian high is enhanced and the East Asia trough moves westward in winter; the East Asian summer monsoon is intensified, and the western Pacific Ocean subtropical high extends northwestward, resulting in increasing rainfall in northern China and the middle and lower reaches of the Yangtze River and decreasing rainfall in South China. These results may have mean-ingful implications for improving the performance of GCM to simulate the climate in East Asia.关键词
冻土/东亚/参数化Key words
frozen soil, East Asia, parameterization分类
天文与地球科学引用本文复制引用
李震坤,朱伟军,武炳义..大气环流模式CAM中土壤冻融过程改进对东亚气候模拟的影响[J].大气科学,2011,35(4):683-693,11.基金项目
国家重点基础研究发展计划项目2007CB411505,财政部/科技部公益性行业专项GYHY200706005,国家自然科学基金资助项目40875052、40921003 （）
