沙漠与绿洲气象2026，Vol.20Issue(1)：68-75,8.DOI:10.12057/j.issn.2097-6801.2506.03240
高分辨率多源融合降水数据在新疆伊犁地区夏季检验分析
Validation and Analysis of High-Resolution Multi-Source Merged Precipitation Data in the Ili Region of Xinjiang during Summer
摘要
Abstract
This study analyzed the spatiotemporal variations of summer precipitation in the Ili region of Xinjiang,on the basis of hourly high-resolution(0.01°×0.01°)multi-source merged precipitation data(HCLDAS)from the China Meteorological Administration(June-August 2024)and observations from 287 meteorological stations.The applicability of HCLDAS was systematically evaluated using metrics such as Precipitation Correctness(PC),Threat Score(TS),and Equitable Threat Score(ETS).The results indicate:(1)HCLDAS performed well in the Ili region,with ETS scores exceeding 0.83 for all precipitation categories except extreme rain(ETS=0.75),and a mean absolute error(MAE)below 0.31 mm,confirming its reliability in complex terrain.(2)The total summer precipitation reached 826 million tons,with areas above 1 500 m elevation contributing 74.93%.The maximum precipitation per unit area occurred within the 2 000-2 500 m elevation zone.(3)Pronounced spatiotemporal heterogeneity was observed.August recorded the highest cumulative precipitation.Key precipitation zones were concentrated in the Ili River Valley,eastern Nilka County,and the mountainous areas of northern Huocheng County.Torrential rain events lasted the longest(1.37 days)at 1 500-2 000 m,while extreme precipitation was most persistent(1.07 days)at 500-1 000 m.(4)Diurnal variation analysis revealed peak precipitation from 21:00 to 22:00(Beijing Time),with the lowest rainfall occurring around midday(11:00-14:00).关键词
伊犁/多源融合降水数据/时空分布/夏季降水/高分辨率Key words
Ili/multi-source merged precipitation data/spatiotemporal distribution/summer precipitation/high-resolution分类
天文与地球科学引用本文复制引用
江远安,王命全,张祖莲,唐冶..高分辨率多源融合降水数据在新疆伊犁地区夏季检验分析[J].沙漠与绿洲气象,2026,20(1):68-75,8.基金项目
新疆维吾尔自治区重点研发任务专项(2022B03027-2) （2022B03027-2）
天山英才三农骨干现代农牧业高层次发展人才项目(2024SNGGGCC038) （2024SNGGGCC038）
新疆维吾尔自治区气象局重点项目(ZD202503) （ZD202503）
新疆大学研究生创新项目(XJDX2025YJS067) （XJDX2025YJS067）
