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北京一次积层混合云系结构和水分收支的数值模拟分析

陶玥 李军霞 党娟 李宏宇 孙晶

陶玥, 李军霞, 党娟, 李宏宇, 孙晶. 北京一次积层混合云系结构和水分收支的数值模拟分析[J]. 大气科学, 2015, 39(3): 445-460. doi: 10.3878/j.issn.1006-9895.1412.13209
引用本文: 陶玥, 李军霞, 党娟, 李宏宇, 孙晶. 北京一次积层混合云系结构和水分收支的数值模拟分析[J]. 大气科学, 2015, 39(3): 445-460. doi: 10.3878/j.issn.1006-9895.1412.13209
TAO Yue, LI Junxia, DANG Juan, LI Hongyu, SUN Jing. A Numerical Study on Precipitation Process and Moisture Budget of Stratiform and Embedded Convective Cloud over Beijing Area[J]. Chinese Journal of Atmospheric Sciences, 2015, 39(3): 445-460. doi: 10.3878/j.issn.1006-9895.1412.13209
Citation: TAO Yue, LI Junxia, DANG Juan, LI Hongyu, SUN Jing. A Numerical Study on Precipitation Process and Moisture Budget of Stratiform and Embedded Convective Cloud over Beijing Area[J]. Chinese Journal of Atmospheric Sciences, 2015, 39(3): 445-460. doi: 10.3878/j.issn.1006-9895.1412.13209

北京一次积层混合云系结构和水分收支的数值模拟分析

doi: 10.3878/j.issn.1006-9895.1412.13209
基金项目: 公益性行业(气象)科研专项GYHY201206025, 中国气象局气象关键技术集成与应用项目CMAGJ2014M75

A Numerical Study on Precipitation Process and Moisture Budget of Stratiform and Embedded Convective Cloud over Beijing Area

  • 摘要: 本文利用中国气象科学研究院(CAMS)中尺度云分辨模式对2007年10月的一次积层混合云降水过程进行了数值模拟。利用模拟结果结合实测资料, 研究了积层混合云系的宏微观结构和降水特征, 并分析了云系的水分收支及降水效率。结果表明:积层混合云是导致此次北京降水的主要云型;积层混合云降水分布不均匀, 云系中微物理量的水平和垂直分布都不均匀, 具有混合相云的云物理结构。冷云降水过程占主导地位, 雪的融化对雨水的形成贡献最大。北京区域降水过程的主要水汽源地为黄海海面及蒙古国, 两支气流在陕西北部汇合后的西南气流将水汽输送到华北地区, 北京区域以外, 水汽和水凝物主要从西边界和南边界输送到域内。北京区域降水主要时段内, 水物质通量在水平方向上为净流入。对北京区域水汽、水凝物和总水物质的水分收支各项的估算表明, 水物质基本达到平衡。北京区域从2007年10月5日20时至6日14时, 总水成物降水效率、凝结率、凝华率及总水凝物降水效率分别为5.6%、4.77%、4.19%、44.9%。
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  • 收稿日期:  2014-07-03
  • 修回日期:  2014-12-30

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