RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2009, Vol. 18 >> Issue (1): 47-.

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REGIONAL CLIMATE CHANGE OVER THREEGORGES RESERVOIR AREA

CHEN Xianyan, ZHANG Qiang, YE Dianxiu, LIAO Yaoming, ZHU Changhan, ZOU Xukai   

  1. National Climate Center,China Meteorological Administration,Beijing 100081,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-01-20

Abstract:

The worldfamous“Three Gorges Reservoir (TGR)”is situated on the middle reaches of the Yangtze River.The construction of this reservoir will probably be finished in 2009 when the final water level will reach 175meter and the reservoir will cover 10 000 km2 of region. No doubt,this huge water body will influence the regional climate to a certain extent.It never occurred such a dramatic intervention in the local environment in the mankind history.Thus the atmosphere problems related to the TGR have attracted a lot of interest from most meteorologists around the world.Based on the rainfall and temperature observation data of 33 stations in the TGR area during the period 1961 to 2006,the climate characteristics of rainfall and temperature changes since the water storage of TGR are analyzed.The rainfall amount and mean temperature before water storage were compared with those after storage,and also the water effect on regional climate was analyzed by rainfall amount ration or temperature difference of nearTGR and farTGR observations.Results show a decreasing rainfall trend in the past three years over the TGR area,which is consistent with the climate change over Southwest China.Meanwhile,the expanding water surface area of reservoir seems to have increasing temperature effect in winter and decreasing effect in summer.However,the impacts from TGR are by no means fully understood from 3year observations,and there is still a lot to be deal with the environment problems by carrying out long time insitu observations and developing more technical analysis in the future.

Key words: Three Gorges Reservior, climate effect, regional change

[1] WANG Zhong,CHENG Yanying. ANALYSIS ON SHIPPING METEOROLOGICAL CONDITIONS IN THE THREE GORGES RESERVIOR AREA [J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2008, 17(1): 79-79.
[2] ZHANG Hong-tao,ZHU Chang-han,ZHANG Qiang. NUMERICAL MODELING OF MICROCLIMATE EFFECTS PRODUCED BY THE FORMATION OF THE THREE GORGES RESERVOIR [J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2004, 13(2): 133-137.
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