干旱区地理2024，Vol.47Issue(12)：2093-2103,11.DOI:10.12118/j.issn.1000-6060.2024.128
中天山巴音布鲁克盆地暖季降水日变化特征
Diurnal variation characteristics of warm season precipitation in the Bayanbuluke Basin of the Middle Tianshan Mountains
摘要
Abstract
Diurnal variation in precipitation is a fundamental aspect of climate change,providing valuable in-sights into its effects on regional water resources.This study analyzes the diurnal precipitation patterns in the Bay-anbuluke Basin,Xinjiang,China during the warm season(May-September)from 2017 to 2023,using hourly pre-cipitation data from 18 meteorological observation stations.The findings indicate that the diurnal variation charac-teristics of precipitation amount,frequency,and intensity during the warm season exhibit overall consistency,al-beit with differences across time scales.On an annual scale,precipitation amount and intensity predominantly in-crease during the day,whereas frequency rises at night.On a monthly scale,all three metrics show significant in-creases from the afternoon to the first half of the night.During the 18:00-24:00 period,precipitation is not only more frequent but also exhibits higher amounts and intensity,while the 07:00-10:00 period reflects the opposite trend.In the warm season,low-intensity rainfall(R1≤2.0 mm)contributes the most to total precipitation,followed by moderate rainfall(2.1 mm≤R1≤4.0 mm).Regarding precipitation processes(R),light rain(0.1 mm≤R≤6.0 mm)occurs most frequently,yet heavy to torrential rain(R≥12.1 mm)contributes the most to total precipitation.The afternoon period experiences the highest precipitation frequency and contribution.Among different precipitation dura-tions,long-duration events exceeding 6 hours account for the largest contributions,whereas short-duration events(1-3 h)are more frequent,particularly during 15:00-20:00.关键词
暖季/降水日变化/降水持续性/巴音布鲁克Key words
warm season/diurnal variation of precipitation/precipitation duration/Bayanbuluke Basin引用本文复制引用
刁鹏,周雪英,尼米才仁·努加,刘长墉..中天山巴音布鲁克盆地暖季降水日变化特征[J].干旱区地理,2024,47(12):2093-2103,11.基金项目
新疆维吾尔自治区自然科学基金(2023D01F29) （2023D01F29）
新疆维吾尔自治区科技厅天山英才项目(2023TSYCJC0064) （2023TSYCJC0064）
新疆气象局创新发展专项面上项目(MS202301)资助 （MS202301）
