大气科学2017，Vol.41Issue(1)：15-29,15.DOI:10.3878/j.issn.1006-9895.1605.15246
沙尘气溶胶作为冰核对阿克苏地区一次多单体型强对流风暴降水及其微物理过程影响的数值模拟研究
A Numerical Study of the Effect of Aerosols Acting as Ice Nuclei on the Precipitation and Microphysical Processes in a Multi-size Convective Storm Occurring in Aksu in Xinjiang, Northwest China
摘要
Abstract
A multi-size convective storm occurring in Aksu region in Xinjiang,Northwest China was simulated using the Weather Research and Forecasting (WRF) mesoscale model,which includes the parameterization for the concentration of ice nuclei proposed by DeMott et al.(2010).Sensitivity tests have been conducted and results were compared under different background conditions to investigate the response of cloud microphysical processes and precipitation to changes in concentrations of ice nuclei.It is found that the increase in concentrations of ice nuclei under the background aerosol condition and dust condition has little influence on rainfall rate in central area of the rain region,but has a significant influence on the regional distribution of the rainfall.The mass and number concentrations of ice crystal and snow particle increase obviously with the increase in the concentration of ice nuclei under different conditions.The main source of snow growth is the deposition of snow.The main source of graupel growth is the collection of supercooling cloud droplets by ice phase particles.When the concentration of ice nuclei increases in the background aerosol condition and dust condition,the number concentration of graupel increases but the graupel size decreases.关键词
强对流/新疆/WRF模式/冰核/多单体Key words
Convective storm/Xinjiang/WRF model/Ice nuclei/Multi-size分类
天文与地球科学引用本文复制引用
王雨,银燕,陈倩,王旭,肖辉..沙尘气溶胶作为冰核对阿克苏地区一次多单体型强对流风暴降水及其微物理过程影响的数值模拟研究[J].大气科学,2017,41(1):15-29,15.基金项目
公益性行业(气象)专项GYHY201306047,江苏高校优势学科建设工程项目(PAPD)Special Scientific Research Fund of Meteorology in the Public Welfare Profession of China GYHY201306047,Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) （气象）
