人民长江2025，Vol.56Issue(3)：106-115,10.DOI:10.16232/j.cnki.1001-4179.2025.03.014
基于多源融合降水数据的雨量站网适用性评估方法
Applicability evaluation method for rainfall gauge networks based on multi-source integrated rainfall data
摘要
Abstract
The accuracy of areal rainfall in computational unit is important for hydrological forecasts,and the reliability of areal rainfall largely depends on the configuration of rainfall gauge network.The conventional evaluation on rainfall gauge network is mainly based on the gauge network density,lacking comprehensive criterions.To address this issue,based on the spatial distribu-tion of rainfall estimated by CMPAS,and considering the characteristics of rainfall and underlying surface factors,a set of methods for evaluating applicability of the rainfall gauge network is proposed,which includes three aspects:the quality of the data recorded by the gauge,the distribution of the station,and the calculation accuracy of areal rainfall.Based on the proposed evaluation criteri-ons,the existing rainfall gauge network in the Dadu River Basin is evaluated.The results show that:①the calculation accuracy of areal rainfall of the current gauge network is affected by the combined influence of the gauge network density and the spatial dis-tribution of rainfall.The relative error of areal rainfall calculation in 9 sub-basins is greater than 10%,of which 5 are in the downstream area.② In sub-regions of the upstream area,the overall areal rainfall is small and evenly distributed,in spite of a sparse gauge network,the calculation accuracy of areal rainfall remains relatively high;the average rainfall estimation errors in the middle and lower reaches are generally high,which is related to the large spatial variability of rainfall and the uneven distribution of the gauge network along the river valley.Compared with the conventional evaluation methods that focus on the distribution den-sity of rain-gauge stations,criterions proposed in this paper can more comprehensively evaluate the distribution of gauge networks in the basin.关键词
雨量站网/降雨空间分布/降水数据/CMPAS/大渡河流域Key words
rainfall gauge network/spatial distribution of rainfall/rainfall data/CMPAS/Dadu River Basin分类
水利科学引用本文复制引用
秦鼎超,张行南,张自航,李佳,牟时宇,方园皓..基于多源融合降水数据的雨量站网适用性评估方法[J].人民长江,2025,56(3):106-115,10.基金项目
国家自然科学基金项目"长江上游山坡径流模拟与山洪形成机理"(U2240216) （U2240216）
中央高校业务费项目"地球系统模式次网格多元产流过程参数化方案研究"(B230201038) （B230201038）
国家能源集团科技创新项目(SCZH-KY-2023-001) （SCZH-KY-2023-001）
