1980-2019年成都地区大气水汽含量时空特征及其与降水的关系  

Temporal and Spatial Characteristics of Atmospheric Water Vapor Content and Its Relationship with Precipitation in the Chengdu Region from 1980 to 2019

作　　者：严晓强 董雪峰 查骅 Yan Xiao-qiang;Dong Xue-feng;Zha Hua(Chengdu Meteorological Bureau,Chengdu 610000,Sichuan Province,China;Chengdu Artificial Weather Modification Center,Chengdu 610000,Sichuan Province,China;Sanshui District Meteorological Bureau of Foshan,Foshan 528000,Guangdong Province,China)

机构地区：[1]成都市气象局,四川成都610000 [2]成都市人工影响天气中心,四川成都610000 [3]佛山市三水区气象局,广东佛山528000

出　　处：《科学与信息化》2025年第5期73-79,共7页Technology and Information

摘　　要：本文基于ERAS再分析格点资料分析了成都地区大气水汽含量的时空变化特征和降水转化率的规律。研究显示,1980-2019年成都地区大气水汽含量总体呈上升趋势,其中春、秋季的增加趋势显著,夏、冬季较弱。年变化呈单峰型特征,1月值最小,7月值最大;空间上呈东高西低分布,西部年平均值在90 kg·m^(-2)以下,东部年平均值达到120 kg·m^(-2)以上。云水转化率呈西高东低,最大值在大邑达到0.4左右。研究结果表明,成都地区具有较好的云水开发潜力,加大人影作业力度,有助于缓解成都地区水资源紧张。This study investigates the temporal and spatial characteristics of atmospheric water vapor content and the patterns of precipitation conversion rates in the Chengdu region from 1980 to 2019 using ERA5 reanalysis gridded data.The results show that the atmospheric water vapor content in the Chengdu region has increased overall during this period,with significant increases in spring and autumn,and weaker increases in summer and winter.The annual variation exhibits a single-peak pattern,with the lowest value in January and the highest in July.Spatially,the distribution is higher in the east and lower in the west,with an annual average value below 90kg·m^(-2 )in the western region and above 120kg·m^(-2) in the eastern region.The cloud water conversion rate is higher in the west and lower in the east,with a maximum value of approximately 0.4 in Dayi County.The findings indicate that the Chengdu region has considerable potential for cloud water development.Enhancing artificial weather modification operations could help alleviate water resource shortages in the region.

关 键 词：成都 大气水汽含量 时空变化 降水转换率 

分 类 号：F42[经济管理—产业经济]