| 京津地区对流性和层状降水回波的特征分析 |
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| 引用本文： | 林隐静,王洪庆,韩雷,王玉,郑永光.京津地区对流性和层状降水回波的特征分析[J].北京大学学报(自然科学版),2011(2):258-262. |
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| 作者姓名： | 林隐静 王洪庆 韩雷 王玉 郑永光 |
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| 作者单位： | 北京大学物理学院大气与海洋科学系;中国海洋大学信息科学与工程学院;国家气象中心; |
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| 基金项目： | 国家自然科学基金(40875019)资助 |
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| 摘 要： | 利用自动分类算法,识别出2005-2007年5-8月京津地区雷达回波中的对流性和层状降水回波.在此基础上,分析了该地区对流性和层状降水回波的垂直廓线和回波面积的日变化特征.结果表明:京津地区层状降水回波的垂直廓线在4 km高度(0℃)附近,出现了明显的"零度层亮带",亮带强度在当地夜间最强,当地上午最弱;该区域内,两种...
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| 关 键 词： | 天气雷达 对流性降水回波 层状降水回波 京津地区 |
Characteristics of Convective and Stratiform Echoes in Beijing-Tianjin Region |
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| LIN Yinjing,WANG Hongqing,,HAN Lei,WANG Yu,ZHENG Yongguang.Characteristics of Convective and Stratiform Echoes in Beijing-Tianjin Region[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2011(2):258-262. |
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| Authors: | LIN Yinjing WANG Hongqing HAN Lei WANG Yu ZHENG Yongguang |
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| Institution: | 1.Department of Atmospheric and Oceanic Sciences,School of Physics,Peking University,Beijing 100871;2.College of Information Science and Engineering,Ocean University of China,Qingdao 266100;3.National Meteorological Center of CMA,Beijing 100081; |
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| Abstract: | The reflectivity fields of Beijing-Tianjin region during 2005-2007 were classified into convective and stratiform components using an automatic algorithm,and then the vertical profiles and diurnal variation of convective and stratiform echoes in this region were analyzed.The results are as follows.1) An obvious bright band was in the stratiform profile of Beijing-Tianjin region at about the 4 km altitude.The bright band was strongest in the night local time,while weakest in the morning.2) In this region,the... |
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| Keywords: | weather radar convective echoes stratiform echoes Beijing-Tianjin region |
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