| 2007年8月10—12日山东半岛持续性特大暴雨的维持机制分析 |
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| 引用本文： | 周淑玲,闫淑莲,张灿.2007年8月10—12日山东半岛持续性特大暴雨的维持机制分析[J].热带气象学报,2009,25(5):628-634. |
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| 作者姓名： | 周淑玲 闫淑莲 张灿 |
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| 作者单位： | 威海市气象局,山东,威海,264200 |
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| 基金项目： | 国家自然科学基金项目(40675068);;山东省气象局重点课题(2008sdqxz19)共同资助 |
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| 摘 要： | 利用多普勒天气雷达资料、常规观测资料及NCEP/NCAR再分析资料，对2007年8月10—12日发生在山东半岛持续性特大暴雨的特征及维持机制进行了分析。结果表明：本次持续性特大暴雨与西太平洋副热带高压中心稳定少动和其边缘不断有冷空气侵入有关；雷达回波强度图上，10—11日最强回波＞50 dBz，12日回波强度在40～45 dBz，其径向速度的零速度线表现不同，但均反映为暖平流；暴雨前期山东半岛具备了发生强雷暴所需的不稳定大气层结，副高边缘的低空东南急流为山东半岛输送了充足的水汽，从而有利于山东半岛暴雨的维持；暴雨维持的动力场特征为：散度场维持低层辐合、高层辐散，垂直速度场为较强的上升运动。
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| 关 键 词： | 天气学 诊断分析 持续性暴雨 维持机制 山东半岛 雷达回波 |
ANALYSIS OF MAINTAINING MECHANISMS OF PERSISTENT SEVERE HEAVY RAIN EVENTS IN SHANDONG PENINSULA FROM 10 TO 12 AUGUST 2007 |
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| ZHOU Shu-ling,YAN Shu-lian,ZHANG Can.ANALYSIS OF MAINTAINING MECHANISMS OF PERSISTENT SEVERE HEAVY RAIN EVENTS IN SHANDONG PENINSULA FROM 10 TO 12 AUGUST 2007[J].Journal of Tropical Meteorology,2009,25(5):628-634. |
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| Authors: | ZHOU Shu-ling YAN Shu-lian ZHANG Can |
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| Institution: | Weihai Meteorological Office;Shandong Province;Weihai 264200;China |
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| Abstract: | An analysis of the characteristics and maintaining mechanisms of a persistent heavy rain event that occurred in Shandong Peninsula from 10 to 12 August 2007 was undertaken using Doppler radar data, conventional observations and NCEP / NCAR reanalysis data. The results show that the persistent heavy rain was related to a stable subtropical anticyclone and the intrusion of cold air on the west side of the subtropical anticyclone. The Doppler radar data show that the reflectivity of the heavy rainfall was more... |
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| Keywords: | synoptic meteorology diagnostic analysis persistent heavy rainfall maintaining mechanisms Shandong Peninsula Doppler weather radar echo |
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