摘要
利用区域环境集成模式系统对东亚地区进行了 1 987年 1月到 1 996年 1 2月的长期积分试验 ,重点采用经验正交函数分析方法分析和比较模式模拟及观测气候主分量时空特征 ,从而考察区域气候模式对东亚地区的区域气候模拟能力。结果表明 :(1 )RIEMS能够较好地抓住地面气温年平均状况及其年变化和年际变率的主要特征 ;(2 )尽管模式对降水的模拟能力没有对地面气温模拟的强 ,但RIEMS模式基本上能够模拟出降水的空间分布以及降水的季节变化特征 ,同时能够抓住降水的年际变率。
RIEMS ability to simulate over East Asia climate is examined by using continue 10-year (from January 1987 to December 1996) integrated results. The EOF analysis is applied for subtracting the main component of both the model climate and observed climate of East Asia to examine the capacity of RIEMS. The results show that: (1) RIEMS can well capture the regional scale patterns, and annual variation and inter-annual variability of the multi-year mean climate of temperature over East Asia; (2) Although capacity of RIEMS to temperature is better than that of precipitation, RIEMS can reproduce pattern, and annual variation and inter-annual variability of precipitation over East Asia. Maximum center of simulated annual precipitation shifts northward.
出处
《气候与环境研究》
CSCD
2004年第2期295-302,共8页
Climatic and Environmental Research
基金
国家重点基础研究发展规划项目G1990403403
中国科学院知识创新工程重点方向项目KZCX3SW218
国家自然科学基金项目40231006共同资助
关键词
区域气候模式
东亚地区
气候变化
经验正交函数
regional climate model
empirical orthogonal function
evolutionary character
