JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2012, Vol. 29 ›› Issue (12): 1-4.DOI: 10.3969/j.issn.1001-5485.2012.12.001

• WATER RESOURCES AND ENVIRONMENT •     Next Articles

Typical Characteristics of Rainfall Evolution in Southwest China: A Case Study of Meitan County in Guizhou Province

FENG Jing1,2, CHENG Bin-fen2,3, WANG Kun4, HU Yong1,2   

  1. 1.School of Environmental Science and Engineering, Donghua University, Shanghai 201620，China; 2.Water Resources Department, China Institute of Water Resources and Hydropower Research,Beijing 100038,China; 3.College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China; 4.Base of the State Key Laboratory of Urban Environmental Processes and Digital Modeling, Capital Normal University, Beijing 100048
  • Received:2011-09-26 Online:2012-12-01 Published:2012-12-18

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Abstract: Under the impacts of climate change and human activities, the rainfall in different regions shows different evolutionary characteristics. The characteristics of annual rainfall, rainfall in flood season and rainstorm in Meitan County in Southwest China are researched using linear regression and Morlet wavelet analysis. The result indicates that annual rainfall in this region decreases continuously and the frequency of rainstorm increases. The maximum rainstorm is increasing while the occurrence time is delaying. The maximum rainstorm shows a trend of reducing-increasing-reducing, with 1980 and 2000 as the turning points. Typical areas in Southwest China are sensitive to global climate change. The rainfall in these areas presents typical regional  characteristics. 

Key words: rainfall, evolutionary characteristics, Morlet wavelet,  linear regression, Meitan County

CLC Number: 

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