| 2010年大连地区春节期间降雪天气分析 |
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| 引用本文： | 王爽.2010年大连地区春节期间降雪天气分析[J].安徽农业科学,2010,38(16):8527-8529. |
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| 作者姓名： | 王爽 |
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| 作者单位： | 北京大学物理学院大气科学系,北京,100871;民航大连空管站,辽宁大连,116033 |
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| 基金项目： | 民航大连空管站资助项目 |
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| 摘 要： | 利用大连机场逐时地面观测资料、Micaps常规气象资料和NCEP/NCAR全球再分析资料等,从天气形势、背景、物理量诊断方面对2010年2月17日发生在大连地区春节期间一次中雪过程天气做了详细的分析。结果表明,该次降雪过程是高空槽配合地面冷锋形成的。动力场低空辐合高空辐散的结构以及上升运动为降雪提供了强有力的动力来源。低层的水汽辐合以及槽前气流对水汽的输送为降雪提供了水汽来源。
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| 关 键 词： | 中雪 环流背景 动力结构 水汽条件 |
Diagnostic Analysis of a Snow Process in Dalian during the Spring Festival of 2010 |
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| WANG Shuang.Diagnostic Analysis of a Snow Process in Dalian during the Spring Festival of 2010[J].Journal of Anhui Agricultural Sciences,2010,38(16):8527-8529. |
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| Authors: | WANG Shuang |
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| Institution: | WANG Shuang(Department of Atmospheric Sciences,Institute of Physics,Peking University,Beijing 100871) |
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| Abstract: | Based on the observed data from Micaps system and NCEP/NCAR reanalysis data,the diagnostic analysis of circulation situation and physical quantity field was made on the snow weather process in Dalian during the Spring Festival on Feb.17th of 2010.The results showed that the troughs at 500 hPa and the cold front on the surface cause the snow.The situation of low-altitude convergence and high-altitude divergence and the upward vertical velocity provided rising power.Sufficient water vapor source and vapor con... |
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| Keywords: | Moderate snow Circulation situation Dynamic structure Vapor condition |
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