水资源与水工程学报2025，Vol.36Issue(3)：73-79,7.DOI:10.11705/j.issn.1672-643X.2025.03.09
降雨量等级与空间分布不均匀性对降雨空间插值方法精度的影响
Influence of rainfall magnitude and spatial distribution inhomogeneity on the accuracy of rainfall spatial interpolation methods
摘要
Abstract
Different spatial rainfall interpolation methods can lead to variations in areal rainfall estima-tion,consequently affecting the accuracy of flood forecasting.To investigate the impact of rainfall magni-tude and spatial distribution inhomogeneity on interpolation accuracy,we selected 10 typical rainfall e-vents each of light rain,moderate rain,heavy rain and rainstorm based on the daily rainfall data from 2015 to 2023 in Lianshui Basin,Jiangxi Province.Based on the inhomogeneity analysis of each event,spatial interpolation was performed using inverse distance weighting(IDW),ordinary Kriging(OK),and spline function(SF)methods.The influences of rainfall magnitude and spatial distribution inhomo-geneity on the interpolation results were then comparatively analyzed.The results indicate that as the rainfall magnitude increases,the degree of spatial rainfall inhomogeneity generally showed a decreasing trend.Under light rain,heavy rain,and rainstorm conditions,IDW demonstrated the best performance;while under moderate rain conditions,OK achieved higher interpolation accuracy.The interpolation accu-racy of all three methods improved as the spatial inhomogeneity of rainfall decreased.When the rainfall variation coefficient(Cv)is less than 0.3,IDW is recommended.Conversely,when Cv is greater than 0.3,OK is suggested for interpolation.关键词
降雨量等级/降雨空间分布/不均匀性/降雨插值方法/精度/濂水流域Key words
rainfall magnitude/rainfall spatial distribution/inhomogeneity/rainfall interpolation meth-od/accuracy/Lianshui Basin分类
天文与地球科学引用本文复制引用
胡龙颂,曾建玲,王艳艳,李娜,周昌明,陈光杰,刘士余..降雨量等级与空间分布不均匀性对降雨空间插值方法精度的影响[J].水资源与水工程学报,2025,36(3):73-79,7.基金项目
江西省教育厅科技计划项目(GJJ210452) （GJJ210452）
国家自然科学基金项目(32460432) （32460432）
江西省水利科学院开放研究基金项目(2023SKLS01) （2023SKLS01）
江西省自然科学基金项目(20224BAB5033) （20224BAB5033）
