RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2009, Vol. 18 >> Issue (5): 427-.

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ZENG Xiaofan1,2,5| ZHAI Jianqing1,2,5| SU Buda3| JIANG Tong1,3| ZHU Jin4   

  • Online:2009-05-20

Abstract:

Based on daily temperature data of 146 meteorological stations from 1960 to 2005 in the Yangtze River basin,this paper analyzed the spatial characteristics of annual temperature in the Yangtze River basin by applying EOF and REOF,and calculated temporal evolution and detected abrupt change.The results showed that,there were two main spatial oscillation patterns(the same trend in the whole basin and EastWest difference trend in the whole basin),and three sensitive areas of annual temperature change(the Middlelower basin,Southern Yangtze River basin and Jinshajiang basin).Annual temperature increased dramatically since 1990 in all the three areas,and showed abrupt changes in late 1990 s,while Jinshajiang basin increased most with climate trend rate 020℃/10a.Spatial distribution of 1991~2005 anomalies in the Yangtze River basin also showed that annual temperature increased in the whole basin,especially the Middlelower basin and Jinshajiang basin increased most significantly.

Key words: the Yangtze River basin/annual temperature/spatial characteristics/temporal evolution

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