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The impact of temperature and precipitation variation on drought in China in last 50 years

Yang Jie Zhang Lu Zhang Da-Quan Feng Guo-Lin

The impact of temperature and precipitation variation on drought in China in last 50 years

Yang Jie, Zhang Lu, Zhang Da-Quan, Feng Guo-Lin
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  • Abstract views:  5062
  • PDF Downloads:  1724
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Publishing process
  • Received Date:  03 January 2009
  • Accepted Date:  23 April 2009
  • Published Online:  15 January 2010

The impact of temperature and precipitation variation on drought in China in last 50 years

  • 1. (1)国家气候中心,中国气象局气候研究开放实验室,北京 100081; (2)兰州大学大气科学学院,兰州 730000; (3)兰州大学大气科学学院,兰州 730000;中国科学院大气物理研究所东亚区域气候-环境重点实验室,北京 100029; (4)中国科学院大气物理研究所东亚区域气候-环境重点实验室,北京 100029;国家气候中心,中国气象局气候研究开放实验室,北京 100081

Abstract: Based on homogeneous temeperature, precipitation and the Palmer Drought Severity Index (PDSI) data between 1958 and 2007 of 194 stations in China, quantitative measure of impact of global warming and precipitation variation on the formation of drought in China is made through a statistical model. Dividing China into eight regions, we analyzed the importance of global warming and precipitation variations in each region respectively. Under the background of global warming, the trend of drought in north China still persists. The most probable region of drought in the next five years shows a tendendy of expansion in north China, especially in the direction to the south. Decreased precipitation is still the key factor in drought formation in most regions. However, in the north, northeast and east-northwest China, global warming plays a bigger role in drought formation.

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