| 浙江地区2015年冬季首场降雪的气象特征及双偏振雷达回波特征分析 |
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| 引用本文： | 吴杨,赵放,孔照林,彭霞云,王语汇,马昊.浙江地区2015年冬季首场降雪的气象特征及双偏振雷达回波特征分析[J].南京气象学院学报,2018,10(4):493-499. |
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| 作者姓名： | 吴杨 赵放 孔照林 彭霞云 王语汇 马昊 |
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| 作者单位： | 浙江省气象服务中心, 杭州, 310017,浙江省气象台, 杭州, 310017,浙江省气象台, 杭州, 310017,浙江省气象台, 杭州, 310017,浙江省气象台, 杭州, 310017,浙江省气象台, 杭州, 310017 |
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| 基金项目： | 浙江省科技厅公益技术研究项目（2014C23003）；浙江省重点研发计划（2016CG1611012）；浙江省气象局重点科技计划（2016ZD06） |
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| 摘 要： | 基于3 h间隔的浙江快速更新同化模式资料、常规探空资料和临安双偏振雷达资料反演产品对浙江地区2015年12月5日的首场降雪过程的特征进行了分析，得到了较高的云顶高度、较低的云顶温度、较低的零度层高度、较低的低层平均温度、稳定的底层冷平流以及特殊的地形是浙西北地区在较高的地表温度情况下易形成降雪的原因；同时对临安双偏振雷达产品资料进行了分析，首次提出浙江地区此类降雪的双偏振雷达产品特征，并得到了判别阈值.希望借助两方面的研究来减少此类降雪天气的漏报率和可预报性.
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| 关 键 词： | 降雪 双偏振雷达 差分反射率 相态 |
| 收稿时间： | 2016/3/28 0:00:00 |
Feature analysis of the first snowfall in Zhejiang in 2015 by dual-polarization radar |
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| WU Yang,ZHAO Fang,KONG Zhaolin,PENG Xiayun,WANG Yuhui and MA Hao.Feature analysis of the first snowfall in Zhejiang in 2015 by dual-polarization radar[J].Journal of Nanjing Institute of Meteorology,2018,10(4):493-499. |
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| Authors: | WU Yang ZHAO Fang KONG Zhaolin PENG Xiayun WANG Yuhui and MA Hao |
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| Institution: | Zhejiang Meteorological Service Center, Hangzhou 310017,Zhejiang Meteorological Observatory, Hangzhou 310017,Zhejiang Meteorological Observatory, Hangzhou 310017,Zhejiang Meteorological Observatory, Hangzhou 310017,Zhejiang Meteorological Observatory, Hangzhou 310017 and Zhejiang Meteorological Observatory, Hangzhou 310017 |
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| Abstract: | Based on the reanalysis data of ZJ-WARMS with three hours interval,conventional sounding data and Lin''an Dual-polarization Radar data products,the typical features of the first snowfall in Zhejiang area on Dec.5,2015 are studied.It is showed that the high temperature near surface and low temperature in middle and low levels,combined with the mountainous topography in the northwest region of Zhejiang province are the main causes.The typical characteristics of dual-polarization radar products on this type of snowfall in Zhejiang area are summarized,and the threshold value of discrimination is obtained consequently,with the purpose to improve the predictability of this kind of snowfall. |
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| Keywords: | snowfall dual-polarization radar differential reflectivity phase state |
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