气象科学2025，Vol.45Issue(3)：410-422,13.DOI:10.12306/2022jms.0040
新疆天山一次冬季地形云过程地面碘化银催化模拟研究
Simulation of silver iodide ground catalysis in a winter orographic cloud in Tianshan,Xinjiang
摘要
Abstract
In this study,parameterization scheme of silver iodide nucleation is coupled to the WRF model,and the model is used to simulate a winter orographic cloud in the Middle Tianshan of Xinjiang from January 22 to 23,2021.According to the actual position of the ground-based generators in the Tianshan area of Xinjiang,the position of the ground-based generator array of Baiyanggou Mushi station is selected as the position of the ground-based generator in the model.The ground-based generator catalytic simulation of the winter orographic cloud process is carried out from 1800 UTC to 1900 UTC on 22.The main conclusions are as follows:The silver iodide particles released from the ground-based generator diffuse downwind to the cloud area under the action of airflow and terrain,nucleate and generate ice crystals through freezing and condensation,and consume cloud water.The West and south sides of the ground-based generator are uphill,and the cloud water above is close to the ground.Therefore,the consumption of cloud water and the formation of ice crystals are mainly concentrated over the hillside in the West and south of the ground-based generator.The activation process of silver iodide particles is mainly concentrated from 1800 UTC to 2000 UTC.The activation process promotes the transformation of cloud droplets below 3 km to ice crystals and the transformation of ice crystals to snow in this period time,which increases the content of snow below 3 km,resulting in the enhancement of ground snowfall intensity at 1800 to 2000 UTC and the increase of cumulative ground snowfall.The catalytic test of different doses shows that for this orographic cloud,when the total amount of AgI is within 480 g,the snow enhancement efficiency increases with the raise of the total amount of AgI.When the total amount of AgI increased to 4 800 g,there was excessive seeding.The total amount of AgI is between 480 g and 4800 g,and there is a total amount value with the maximum snow enhancement efficiency.For the six generators in the ground-based generator array,the more ground-based generator start-up,the greater the snow enhancement efficiency.关键词
地形云/碘化银/地面烟炉/人工增雪Key words
Orographic clouds/silver iodide/ground-based generators/artificial snow enhancement分类
天文与地球科学引用本文复制引用
胡建林,陈倩,李斌,杨璟,李圆圆,景晓琴..新疆天山一次冬季地形云过程地面碘化银催化模拟研究[J].气象科学,2025,45(3):410-422,13.基金项目
西北区域人工影响天气能力建设项目(ZQC-R18211,RYSY201902) （ZQC-R18211,RYSY201902）
国家自然科学基金资助项目(41775136) （41775136）
