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积层混合云结构特征及降水机理的个例模拟研究

何晖 高茜 刘香娥 周嵬 贾星灿

何晖, 高茜, 刘香娥, 周嵬, 贾星灿. 积层混合云结构特征及降水机理的个例模拟研究[J]. 大气科学, 2015, 39(2): 315-328. doi: 10.3878/j.issn.1006-9895.1404.14102
引用本文: 何晖, 高茜, 刘香娥, 周嵬, 贾星灿. 积层混合云结构特征及降水机理的个例模拟研究[J]. 大气科学, 2015, 39(2): 315-328. doi: 10.3878/j.issn.1006-9895.1404.14102
HE Hui, GAO Qian, LIU Xiang'e, ZHOU Wei, JIA Xingcan. Numerical Simulation of the Structural Characteristics and Precipitation Mechanism of Stratiform Clouds with Embedded Convections[J]. Chinese Journal of Atmospheric Sciences, 2015, 39(2): 315-328. doi: 10.3878/j.issn.1006-9895.1404.14102
Citation: HE Hui, GAO Qian, LIU Xiang'e, ZHOU Wei, JIA Xingcan. Numerical Simulation of the Structural Characteristics and Precipitation Mechanism of Stratiform Clouds with Embedded Convections[J]. Chinese Journal of Atmospheric Sciences, 2015, 39(2): 315-328. doi: 10.3878/j.issn.1006-9895.1404.14102

积层混合云结构特征及降水机理的个例模拟研究

doi: 10.3878/j.issn.1006-9895.1404.14102
基金项目: 公益性行业(气象)科研专项GYHY201306065, 北京市自然科学基金项目6154027, 国家自然科学基金项目41205100、41175007

Numerical Simulation of the Structural Characteristics and Precipitation Mechanism of Stratiform Clouds with Embedded Convections

  • 摘要: 积层混合云是我国一种重要的降水系统, 其降水既有对流云又有层状云特征。基于积层混合云的重要性, 本文利用中尺度数值模式WRF(Weather Research and Forecasting Model), 结合三维粒子运行增长模式对2012年5月29日北京地区的一次积层混合云降过程进行了模拟研究。模拟的降水与雷达回波与实测结果基本一致。在此基础上, 重点分析了混合云系中积状云与层状云各自的微物理结构特征与降水的发生机理等。结果表明:降水过程云内存在着明显的“播种—供给”机制, 层状云中“播种—供给”机制相对简单。而对流云区中由于降水粒子可以发生上下多次的循环增长, “播种—供给”机制可在云的上下层间双向进行, 云中粒子群可以增长得更大。在积层混合云中, 在低层, 层状云中已有的水凝物粒子进入内嵌的积云块中, 而在高层水成物粒子又从积云中落到层云中, 积层混合云系充分发挥了积云和层云各自的优势, 从而降水效率较高。
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出版历程
  • 收稿日期:  2014-01-01
  • 修回日期:  2014-04-28

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