长江科学院院报 ›› 2014, Vol. 31 ›› Issue (8): 23-28.DOI: 10.3969/j.issn.1001-5485.2014.08.0052014,31(08):23-28

• 水资源与环境 • 上一篇    下一篇

基于云模型的江河源区降雨时空分布特征分析

詹存a,b,梁川a,b,赵璐a,b,牛凯杰a,b   

  1. 四川大学 a.水利水电学院;
    b.水力学与山区河流开发保护国家重点实验室,成都 610065
  • 收稿日期:2013-12-16 修回日期:2014-08-12 出版日期:2014-08-01 发布日期:2014-08-12
  • 通讯作者: 梁 川(1957-),男,四川雅安人,教授,博士生导师,从事水文水资源方面的研究,(电话)13060056051(电子信箱)lchester@sohu.com。
  • 作者简介:詹 存(1990-),男,宁夏中宁人,硕士研究生,从事气候变化及水文水资源方面的研究,(电话)13980614752(电子信箱)862339571@qq.com。
  • 基金资助:
    国家自然科学基金资助项目(41271045);国家重点基础研究发展973计划项目(2013CB036401)

Spatial-temporal Distribution of Precipitation in Source Regions ofYangtze River and Yellow River Based on Cloud Model

ZHAN Cun1,2, LIANG Chuan1,2, ZHAO Lu1,2, NIU Kai-jie1,2   

  1. 1.College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China;
    2.State KeyLaboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
  • Received:2013-12-16 Revised:2014-08-12 Published:2014-08-01 Online:2014-08-12

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摘要： 根据青藏高原江河源区7个气象站点1960—2012年的月降雨资料,基于云模型,分析了该区域降雨的时空分布特征。结果表明:长江源区平均降雨量均小于同时期黄河源区的降雨量;全年、非汛期和月的降雨量比黄河源区集中且稳定,汛期降雨虽比黄河源区集中,但不如黄河源区稳定。江河源区全年降雨比非汛期、汛期和月均降雨量最为分散且最不稳定;非汛期降雨量虽最小,但最集中且最稳定。江河源区汛期和非汛期降雨量和降雨量的熵在空间上分布相似,均表现出了从东南到西北逐渐递减的规律;降雨量的超熵在空间上规律不明显,值得注意的是沱沱河、达日和曲麻莱非汛期和汛期降雨量的超熵显示出了相反的特征。研究成果能为江河源区气候变化研究提供科学参考。

关键词: 降雨, 云模型, 江河源区, 时空分布, 均匀, 稳定性

Abstract: Cloud model was used to analyze the spatial-temporal distributions of precipitation based on monthly precipitation data (1960-2012) from 7 stations in source regions of Yangtze River and Yellow River. Results indicate that the average precipitation in the source region of Yangtze River was smaller than that of Yellow River in the same period, but annual, monthly and non-flood-season precipitation in this region were more concentrated and stable than those in Yellow River. Annual precipitation was more than monthly, flood-season and non-flood-season precipitation, but it was also the most decentralized and unstable; while precipitation in non-flood season was the smallest, it was also the most concentrated and stable. Precipitation as well as its entropy in source regions of Yangtze River and Yellow River during wet and dry seasons gradually decreased from southeast to northwest. Hyper entropy of precipitation was not regular in space, but it showed opposite characteristics in wet and dry seasons in Tuotuohe, Dari and Qumalai. This research could provide scientific reference for the study of climate change in the source regions of Yangtze River and Yellow River.

Key words: precipitation, cloud model, source regions of Yangtze River and Yellow River, spatial-temporal distribution, uniformity, stability

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