青藏高原年代际气候变化研究进展  

Progresses in Researches on Interdecadal Climatic Variation over Tibetan Plateau

作　　者：邹燕[1] 赵平[1] 

机构地区：[1]中国气象科学研究院

出　　处：《气象科技》2008年第2期168-173,共6页Meteorological Science and Technology

基　　金：中国气象局气候研究开放实验室开放课题(LC2004C-11);中国气象局气候变化专项(CCSF2007-2)共同资助

摘　　要：青藏高原是全球气候系统的重要组成部分。从降水、气温、积雪及能量源汇方面,系统地阐述了众多学者关于青藏高原年代际气候变化的研究进展。研究显示,近百年来高原的气温变化可分为4个阶段,即20世纪20年代之前偏冷,20-50年代偏暖,60-70年代气温下降以及80年代至今的持续偏暖;80年代前后全球性的暖跃变在高原气候变化上同样存在,而且更超前于北半球。全球变暖的环境下,高原降水趋于增加,高原积雪呈偏多状态。高原气候的变化还存在着明显的地域性和季节性差异。文中还综述了青藏高原的热源和地形作用对亚洲季风爆发、季风区降水等区域和全球气候变化影响的研究成果,并简要提出了研究中存在的问题和今后的科研方向。The Tibetan Plateau is an important member of the global climatic system. Researches on interdecadal climatic variations over the Plateau based on different substitute data are enumerated systematically and the research progresses on dry, humid, cool and warm features of the plateau environment and the variation of snow cover and heat sources （sinks） are listed in detail. It reveals that it is colder before the 1920s and warmer from the 1920s to the 1950s and after the 1980s. There are same changes occurred over the Tibetan Plateau in accompany with the worldwide warming jumping around the 1980s, which is earlier than that of the North Hemisphere. The precipitation and snow cover over the plateau tend to increase under the context of global warming. There are obvious regional and seasonal climate variations on the plateau. The thermal/mechanical forcing and terrain effect of the plateau and the impacts on the Asian monsoon onset, rainfall in monsoon regions, and regional and global climatic changes are analyzed. Some existing problems in the related researches and research priorities in the future are also discussed.

关 键 词：青藏高原 年代际气候变化 大气热源 亚洲季风 

分 类 号：P467[天文地球—大气科学及气象学] X21[环境科学与工程—环境科学]