Temporal and Spatial Characteristics of Atmospheric Water Vapor Content and Its Relationship with Precipitation in the Chengdu Region from 1980 to 2019
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.
Chengdu RegionAtmospheric Water Vapor ContentTemporal and Spatial VariationPrecipitation Conversion Rate
NETL
NSTL
万方数据
维普
