Comparison of Spatical Interpolation between Different Rainfall Levels: A CaseStudy of Rainfall in Nanchong City, Sichuan Province
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摘要:
为对比分析大雨、中雨、小雨条件下,不同空间插值方法模拟地市州尺度降雨的差异,基于四川省南充市9个县级辖区三次24h降雨量数据,采用反距离加权(Inverse Distance Weighting,IDW)、张力样条函数(Spline with Tension,ST)、局部多项式(Local Polynomial Interpolation,LPI)、ANUDEM四种插值方法,从插值平均误差(ME)、中误差(RMSE)角度进行了对比分析。结果显示,按ME排序,大雨、中雨时LPI
Abstract:
For discussing the distinctions of rainfall of different cities under the conditions of heavy, moderate and light rains, the spatialinterpolation of different cities were simulated based on the rainfall data of three counties in Nanchong City, Sichuan Province. Four interpolationmethods including Inverse DistanceWeighting (IDW), Spline with Tension (ST), Local Polynomial Interpolation (LPI) and ANUDEM were used toanalyze the mean error (ME) and medium error (RMSE). Sorted by ME: it can be seen from the results that LPI
