沙漠与绿洲气象2024，Vol.18Issue(3)：24-31,8.DOI:10.12057/j.issn.1002-0799.2024.03.004
山西中部一次积层混合云降水微物理特征
Microphysical Characteristics of Mixed Convective Stratiform Cloud Precipitation in Central Shanxi
摘要
Abstract
This study analyzed the vertical distribution of cloud microphysical structure,ice crystal morphology,and precipitation characteristics using airborne detection and surface raindrop spectrum observation data of a convective-stratiform mixed cloud precipitation event in central Shanxi province on May 9th,2011.The findings indicate the mixed convective stratiform cloud is an inhomogeneous vertical distribution of the cold cloud,characterized by abundant supercooled water.Additionally,the presence of convective bubbles leads to variations in the liquid water content across different positions in the cloud.The deposition process at 5 300 m results in a noteworthy increase in the number concentration of both cloud particles and precipitation particles.The size distribution of small cloud particles exhibits a single peak,with peak diameters ranging from 5 to 6 μm or 9 to 10 μm,whereas the size distribution of larger cloud particles is characterized by multiple peaks.The observed ice crystal morphology during this process includes plate-shaped,needle column-shaped,column cap-shaped,spoke-shaped,and irregular-shaped crystals.Aggregation and riming at 4 900 m lead to the enhancement of spoke and needle column ice crystals,while riming ice crystals experience a significant increase near the melting layer at 4.1 km.The microphysical structure of the precipitation is predominantly stratiform due to the placement of the raindrop spectrometer.关键词
积层混合云/微物理特征/垂直结构/粒子形态Key words
stratiform cloud with embedded convection/cloud microphyscial charateristics/vertical structure/particle morphology分类
大气科学引用本文复制引用
杨俊梅,孙鸿娉,田晓婷,王洪霞..山西中部一次积层混合云降水微物理特征[J].沙漠与绿洲气象,2024,18(3):24-31,8.基金项目
山西省重点研发计划项目(202202130501020) （202202130501020）
中国气象局云雾物理环境重点开放实验室开放课题(2020Z00713) （2020Z00713）
国家重点研发计划(2019YFC1510301) （2019YFC1510301）
山西省气象局重点课题(SXKZDDW20195606) （SXKZDDW20195606）
