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Journal of Geographical Sciences    2004, Vol. 14 Issue (3) : 275-281     DOI:
Climate and Environmental Change |
The extreme dry/wet events in northern China during recent 100 years
MA Zhuguo1, DAN Li1, HU Yuewen2
1. Chinese Academy of Sciences Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, START Regional Center for East Asia, Institute of Atmospheric Physics, CAS, Beijing 100029, China|
2. Bijie Meteorological Bureau of Guizhou Province, Guizhou 551700, China
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Abstract  

Using monthly precipitation and monthly mean temperature, a surface humid index was proposed. According to the index, the distributed characteristics of extreme dryness has been fully analyzed. The results indicated that there is an obvious increasing trend of extreme dryness in the central part of northern China and northeastern China in the last 10 years, which shows a high frequency period of extreme dryness; while a low frequency period in the regions during the last 100 years. Compared with variation trend of the temperature in these regions, the region of high frequent extreme dryness is consistent with the warming trend in the same region.

Keywords monthly precipitation      air temperature      surface humid index      climate      extreme dryness     
Fund:

Major State Basic Research Development Program of China, No.G1999043400; National Natural Science Foundation of China, No.40375028

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MA Zhuguo, DAN Li, HU Yuewen. The extreme dry/wet events in northern China during recent 100 years[J]. Journal of Geographical Sciences,2004, 14(3): 275-281.
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http://www.geogsci.com/EN/     OR     http://www.geogsci.com/EN/Y2004/V14/I3/275


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