干旱区研究2026，Vol.43Issue(5)：922-931,10.DOI:10.13866/j.azr.2026.05.03
基于飞机观测的内蒙古阴山地区层状云微物理特征
Microphysical characteristics of stratiform clouds over the Yinshan Mountains region of Inner Mongolia based on aircraft observations
摘要
Abstract
To gain an in-depth understanding of precipitation processes in the Yinshan Mountains region of Inner Mongolia,this paper presents a systematic investigation of the microphysical characteristics of a stratiform pre-cipitating cloud system based on aircraft observation data collected on April 19,2024.The results show that:(1)Due to mountain blocking,moisture accumulation,and orographic forced lifting,significant differences in cloud microphysical characteristics were observed between the northern and southern sides of the mountains at the same flight altitude.On the northern side,the cloud system was characterized by lower liquid water content,with cloud particles predominantly consisting of small droplets with diameters less than 15 μm,exhibiting high to-tal number concentrations and a relatively narrow spectral width.In contrast,on the southern side,higher liquid water content,fewer particles,and a significantly broader spectral width were observed.(2)The spatial distribu-tion of liquid water content at the edges of the cloud area was uneven.Particle sizes in this region were signifi-cantly smaller than those in the interior of the cloud body due to the effects of turbulence and evaporation.The concentration of small cloud droplets decreased due to the coalescence process of melting ice crystals near the 0℃level,while the concentration of large cloud droplets increased significantly,accompanied by a broadening of the particle spectral width measured by both instruments.(3)Vertical observations indicate that large precipita-tion particles at higher altitudes undergo melting during descent,resulting in the presence of a substantial number of partially melted cloud particles at lower levels.Meanwhile,the breakup of precipitation particles during their fall leads to a narrowing of the precipitation particle spectrum at lower levels and an increase in the number con-centration of cloud particles.This study systematically elucidates the refined effects of factors such as topography and turbulence on cloud microphysical structure.The findings can be directly applied to improve numerical weather prediction models and cloud seeding operation strategies for this region.关键词
内蒙古阴山地区/层状云/微物理特征/飞机观测Key words
Yinshan Mountains region of Inner Mongolia/stratiform clouds/microphysical characteristics/air-craft observations引用本文复制引用
李慧,郑旭程,苏立娟,林泓锦,辛悦..基于飞机观测的内蒙古阴山地区层状云微物理特征[J].干旱区研究,2026,43(5):922-931,10.基金项目
内蒙古自然科学基金青年项目(2025QN04018) （2025QN04018）
内蒙古自治区气象局科学试验项目(nmqxkxsy202406) （nmqxkxsy202406）
内蒙古自治区气象局科技创新项目(nmqxkjcx202585,nmqxkjcx202471,nmqxkjcx202428) （nmqxkjcx202585,nmqxkjcx202471,nmqxkjcx202428）
中国气象局人工影响天气中心创新团队(WMC2023IT02) （WMC2023IT02）
中国气象局创新发展专项(CXFZ2025J038) （CXFZ2025J038）
