| 江西抚州2008年低温雨雪冰冻天气过程成因分析 |
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| 引用本文： | 郑劲光,徐星生,郭建华,郄喜明.江西抚州2008年低温雨雪冰冻天气过程成因分析[J].气象与减灾研究,2008,31(2):58-61. |
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| 作者姓名： | 郑劲光 徐星生 郭建华 郄喜明 |
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| 作者单位： | 1. 抚州市气象局,江西,抚州,344000
2. 江西省气象台,江西,南昌,330046 |
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| 基金项目： | 江西省气象局重点科研项目 |
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| 摘 要： | 利用常规气象资料、数值预报产品，从天气形势、物理量等方面，分析了2008年1月12日-2月2日江西抚州长时间低温、雨雪、冰冻天气过程的成因。结果表明，乌拉尔山阻塞高压的建立、青藏高原南侧到孟加拉湾南支低槽异常活跃、西北太平洋副热带高压偏强偏北，为这次过程的发生提供了有利的环流背景；700hPa西南风急流不仅为低温冻雨的发生提供了充沛的水汽条件和动力条件，而且还有利于中低层逆温层结的形成和维持；过程后期赣中、赣南的暴雨区，与垂直速度所表现的强烈上升区相对应。
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| 关 键 词： | 低温 雨雪 冰冻 大气环流 物理量. |
Causes of the 2008 Low-temperature and Freezing-rain Process in Fuzhou,Jiangxi |
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| ZHENG Jing-guang,XU Xing-sheng,GUO Jian-hua,XI Xi-ming.Causes of the 2008 Low-temperature and Freezing-rain Process in Fuzhou,Jiangxi[J].Meteorology and Disaster Reduction Research,2008,31(2):58-61. |
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| Authors: | ZHENG Jing-guang XU Xing-sheng GUO Jian-hua XI Xi-ming |
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| Institution: | ZHENG Jing-guang , XU Xing-sheng , GUO Jian-hua , XI Xi-ming (1. Fuzhou Municipal Meteorological Bureau, Fuzhou 344000, China; 2. Jiangxi Provincial Meteorological Observatory, Nanchang 330046, China) |
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| Abstract: | Based on the conventional observation data and numerical forecasting products, the causes of the Jan.12--Feb.2, 2008 continuous low-temperature and freezing-rain process in Fuzhou, Jiangxi are analyzed.. The results show that the blocking high over the Ural Mountains, the extremely active southern troughs from the south of Qinghai-Tibet Plateau to the Bay of Bengal and the stronger northward subtropical high in northwest Pacific are the favorable circulation backgrounds. The southwesterly jet at 700 hPa not only provides the vapor and dynamic conditions for the low temperature and freezing rain, but also is favorable to form and maintain the temperature inversion on low-mid layers. The rainstorm and snowstorm regions in the middle and south of Jiangxi province are corresponding with the strong uplifted area in the later period of this process. |
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| Keywords: | Low temperature Sleet Freezing Atmospheric circulation Physical quantity |
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