Spatial-temporal Variation of Intra-annual Precipitation Concetration Degree and Precipitation Concetration Period on Southeast Coast of China from 1960 to 2013
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    Abstract:

    [Objective] The spatial-temporal variation characteristics of precipitation concentration degree(PCD) and precipitation concentration period(PCP) on the southeast coast of China were studied to provide bases for dealing with drought and flood disasters as well as water resources utilization scientifically. [Methods] Based on daily precipitation data from 46 meteorological stations during 1960-2013 on the southeast coast of China, the authors investigated the characteristics of PCD and PCP using wavelet analysis and Empirical Orthogonal Function(EOF) methods. [Results] Fluctuating range of PCD was between 0.10 and 0.25; PCD had three cycles: 13~16 a, 19~23 a and 33~35 a. PCP ranged between 139.5 and 208.2 and it had two cycles: 13~16 a and 25~30 a. An obvious characteristic of PCD was regional differentiation. Spatial variation of PCP was notable. [Conclusion] During 1960-2013 in the southeast coast area of China, PCD increased, and the values of PCD of coastal areas were higher than those of inland areas. PCP fluctuated steadily.

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王米雪,延军平.1960-2013年中国东南沿海地区年内降水集中度和集中期的时空变化特征[J].水土保持通报英文版,2016,36(2):277-282,287

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History
  • Received:March 11,2015
  • Revised:March 25,2015
  • Adopted:
  • Online: May 06,2016
  • Published: