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Spatial-temporal change in precipitation patterns based on the cloud model across the Wei River Basin, China

机译：基于云模型的渭河流域降水模式的时空变化

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摘要

It is of significant importance to investigate the spatial-temporal change in precipitation patterns due to its great effects on droughts, floods, soil erosion and water resource management. A complete investigation of precipitation structure and its distribution pattern based on daily precipitation covering 1960-2005 at 21 meteorological stations in the Wei River Basin has been performed. In order to comprehensively and objectively describe the changing pattern of precipitation, the cloud model is employed to quantitatively analyse the average, uniformity and stability of precipitation. Results indicate the following: (1) the occurrence of different precipitation durations exhibits a positive exponential curve with the decrease in precipitation durations, and 1-3-day events are the predominant precipitation events which have an increasing trend; (2) precipitation and its non-uniformity is increasingly reducing, while its stability increases initially then decreases; (3) mean precipitation reduces from southeast to northwest, and the precipitation of the Guanzhong Plain has a low uniformity and stability due to its location and increasingly intensifying human activities. The cloud model provides a new idea and quantitative measure for the evaluation of the uniformity and stability of precipitation.
机译：由于降水模式对干旱，洪水，水土流失和水资源管理的巨大影响，研究降水模式的时空变化具有重要意义。基于渭河流域21个气象站1960-2005年的日降水量，对降水结构及其分布规律进行了全面调查。为了全面客观地描述降水的变化规律，采用云模型对降水的平均，均匀性和稳定性进行了定量分析。结果表明：（1）不同降水持续时间的发生呈正指数曲线，随降水持续时间的减少而减少，以1-3天为主导的降水事件呈增加趋势； （2）降水及其不均匀性逐渐减少，而其稳定性先是先增加然后是降低； （3）从东南到西北，平均降水量减少，关中平原由于其位置和人类活动的日益加剧，其均匀性和稳定性较低。云模型为评估降水的均匀性和稳定性提供了一种新的思路和定量手段。

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  • 来源
    《Theoretical and applied climatology》 |2015年第2期|391-401|共11页
  • 作者

    Shengzhi Huang; Beibei Hou; Jianxia Chang; Qiang Huang; Yutong Chen;

  • 作者单位

    State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, China;

    Xi'an University of Science and Technology, Xi'an, China;

    State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, China;

    State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, China;

    State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, China;

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