| 华北回流强降水天气过程的中尺度分析 |
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| 引用本文： | 张守保,张迎新,郭品文. 华北回流强降水天气过程的中尺度分析[J]. 高原气象, 2009, 28(5): 1067-1074 |
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| 作者姓名： | 张守保 张迎新 郭品文 |
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| 作者单位： | 河北省气象与生态环境实验室,河北,石家庄,050021;南京信息工程大学,大气科学学院,江苏,南京,210044;河北省气象台,河北,石家庄,050021;南京信息工程大学,大气科学学院,江苏,南京,210044 |
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| 基金项目： | 国家自然科学基金,河北省自然科学基金,河北省科委重点项目 |
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| 摘 要： | 使用华北地区加密自动站资料、 多普勒雷达资料和NCEP（1°×1°）再分析资料, 应用中尺度滤波方法、 诊断分析方法等, 对2003年10月华北回流暴雨天气过程进行了中尺度分析。结果表明： 在回流冷空气与西南暖湿气流相遇产生的辐合带中存在中尺度低压和切变; 中尺度低压和切变主要在600 hPa以下, 中尺度低压随高度向西、 向北倾斜, 东西向中尺度切变随高度向北倾斜。此次回流暴雨过程中有5个中尺度雨团活动, 其中3个中尺度雨团与中尺度低压和切变配合且随低压和切变移动, 暴雨期间多普勒雷达速度图上出现了持续2 h以上的逆风区。
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| 关 键 词： | 华北回流 中尺度分析 逆风区 中尺度雨团 |
Mesoscale Analysis of a Return-Flow Event with Rain Storm Occurred over North China |
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| ZHANG Shou-bao,ZHANG Ying-xin,GUO Pin-wen. Mesoscale Analysis of a Return-Flow Event with Rain Storm Occurred over North China[J]. Plateau Meteorology, 2009, 28(5): 1067-1074 |
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| Authors: | ZHANG Shou-bao ZHANG Ying-xin GUO Pin-wen |
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| Abstract: | Using the automatic weather station data, NCEP reanalysis data(1°×1°) and Doppler radar images, the mesoscale feathers of a return flow events with rain storm over North China on October 10～12, 2003 was analyzed. The result showed that the high spatial and time resolution observation data could well exhibit the signature of the event. And results were concluded that the mesoscale rain clusters moved with mesoccale low and shear.And these mesoscale systems were found on the convergence belt forming between warm wet southwesterly and cold dry return flow, and they mainly exist under 600 hPa. Mesosacle low tilted westward and northward with height.Mesoscale shear tilted northward. The 3 of 5 rain clusters occurred with mesoscale low and shear. The Adverse Wind Region(AWR) was found in rain storm, and the AWR last nearly 2 hours . |
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| Keywords: | Return-flow event Mesoscale analysis Adverse wind region Mesoscale rain cluster |
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