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《Plateau Meteorology》 2004-S1
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Climatic Change of Qinghai-Xizang Plateau Region in Recent 40-year Reanalysis and Surface Observation Data——Contrast of Observational Data and NCEP, ECMWF Surface Air Temperature and Precipitation

LI Chuan~1,ZHANG Tin-jun~(1, 2), CHEN Jing~1(1. Chengdu Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610072, China;2. National Ice & Snow Data Center, Colorado University)  
The observation data over Qinghai-Xizang Plateau, NCEP/NCAR reanalysis data, ECMWF reanalysis data were applied to compare and analyze the climate change over Qinghai-Xizang Plateau in recent forty years. It is found that the climatic warming of surface observation data selected in recent forty years is obvious, whereas the reanalysis data over Qinghai-Xizang Plateau show no evidence of obvious climatic warming during this period. The interannual change of ECMWF reanalysis surface precipitation data show that the precipitation over Qinghai-Xizang Plateau haven′t obvious wet or dry tendency in recent forty years. But it seems ECMWF reanalysis precipitation data in recent ten years is in a comparably wet period over Qinghai-Xizang Plateau.
【Fund】: 中国气象局成都高原气象研究所开放实验室基金课题;; 四川省气象局重点课题“全球气候变暖对青藏高原及邻近地区气候影 响”;; 国家自然科学基金项目(40475045);; 四川省“十五”重大科技攻关项目专题“气候变化对九寨—黄龙核心景区水循环的作用”;;