干旱区研究2025，Vol.42Issue(7)：1173-1183,11.DOI:10.13866/j.azr.2025.07.02
青藏高原东部三种降水数据产品的适用性评估
Applicability evaluation of three kinds of precipitation products in eastern Qinghai-Xizang Plateau
摘要
Abstract
Based on the 2022 daily precipitation data from weather stations in the eastern Tibetan Plateau,this study evaluated the accuracy of three datasets from the China Meteorological Administration:the Multi-source Precipitation Analysis System(CMPAS),Land Data Assimilation System(CLDAS),and Global Atmospheric Re-analysis(CRA)—via error indices and grading methods.The results indicate:(1)CMPAS exhibits the lowest er-ror and highest correlation,making it the most reliable for annual precipitation analysis.(2)CMPAS monthly data align closely with observations,while CRA overestimates and CLDAS underestimates precipitation in most months.(3)During two large-scale precipitation events,CLDAS best captures accumulated rainfall,while CMPAS more accurately reflects precipitation centers,intensities,timing,and location.Overall,CMPAS is the most effective dataset for analyzing precipitation in the region,supporting improved monitoring of sparse areas and laying a solid foundation for climate operations and disaster prevention.关键词
降水/数据产品/适用性/评估/青藏高原Key words
precipitation/data product/applicability/quality assessment/Qinghai-Xizang Plateau引用本文复制引用
李漠雨,董少睿,郭英香..青藏高原东部三种降水数据产品的适用性评估[J].干旱区研究,2025,42(7):1173-1183,11.基金项目
青海省科技厅基础研究计划项目(2025-ZJ-736) （2025-ZJ-736）
青海省气象局科研项目计划(QXMS2024-27) （QXMS2024-27）
