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| 一类降水过程多尺度天气系统结构特征 | |
| 引用本文： | 林宗桂,林墨,林开平,钟利华,罗小莉.一类降水过程多尺度天气系统结构特征[J].气象研究与应用,2014,35(3):1-4. |
| 作者姓名： | 林宗桂 林墨 林开平 钟利华 罗小莉 |
| 作者单位： | 1. 广西气象减灾研究所,南宁530022;国家卫星气象中心遥感应用试验基地,南宁530022 2. 广西气象台,南宁,530022 3. 广西气象服务中心,南宁,530022 |
| 基金项目： | 国家自然科学基金，广西科学研究与技术开发计划项目 |
| 摘 要： | 对2010-2013年弱冷空气影响造成降雨过程,采用统计分析和典型个例分析相结合方法,分析了降水过程中大、中、小尺度天气系统的结构特征。结果发现：（1）不同尺度天气系统一般都具有明显的结构特征,天气系统结构的配置与降雨强度存在对应关系;（2）在A类天气形势下,斜云带更有利强降雨的产生,横云带的降雨强度相对较弱,逗点云系容易产生较强降雨;（3）弱冷空气影响过程中,在地面通常有中尺度负变压区形成,对流主要发生在中尺度负变压区内,以线状对流为常见;（4）约有半数以上的强、中降雨过程有低空急流出现,但也有低空急流出现并无强降雨现象,低空急流与降雨强度呈弱相关的统计关系。 |
| 关 键 词： | 降水 天气系统结构 中尺度负变压区 线状对流 低空急流 |
Structural Characteristics of Multi-scale Weather System in a Precipitation Process |
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| LIN Zhong-gui,LIN Mo,LIN Kai-ping,ZHONG Li-hua,LUO Xiao-li.Structural Characteristics of Multi-scale Weather System in a Precipitation Process[J].Journal of Guangxi Meteorology,2014,35(3):1-4. | |
| Authors: | LIN Zhong-gui LIN Mo LIN Kai-ping ZHONG Li-hua LUO Xiao-li |
| Institution: | LIN Zhong-gui, LIN Mo, LIN Kai-ping, ZHONG Li-hua, LUO Xiao-li (1.Guangxi Institute of Meteorology and Disaster-Mitigation Institute, Nanning 530022, China; 2. Remote Sensing Application and Experiment Station of National Satellite Meteorology Centre, Nanning 530022, China; 3.Guangxi Meteorological Observatoion, Nanning 530022, China; 4. Guangxi Meteorological Service Center, Nanning 530022, China) |
| Abstract: | Based on statistic analysis and typical case analysis method, the structural characteristics of large, medium and small scale weather system in the precipitation process are analyzed for the rainfall process from 2010 to 2013 caused by the weak cold air. The results show that：1） Different scale weather systems generally possess obvious structural features, and there is corresponding relationship between the configuration of weather system structure and rainfall intensity;2） In the class A weather situation,oblique cloud is more conducive to generate heavy rainfall, the rainfall intensity of horizontal cloud is relatively weak, and comma cloud tends to generate strong rainfall;3） In the process of weak cold air, a meso-scale negative allobar is usually formed in the ground, and the convection mainly occurs in the negative allobar,usually with more common linear convection; 4） Low-level jet appears in about more than half of the strong or medium rainfall process, but sometimes Low-level jet appears without heavy rain, so there is a weak statistical relationship between Low-level jet and rainfall intensity. |
| Keywords: | precipitation weather system structure meso-scale negative allobar linear convection Low-level jet |
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