| 浙江省北部地区一次飑线天气过程分析 |
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| 引用本文： | 王雷,张伟红,林伟,王志武.浙江省北部地区一次飑线天气过程分析[J].气象科技,2003,31(2):97-100. |
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| 作者姓名： | 王雷 张伟红 林伟 王志武 |
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| 作者单位： | 浙江省舟山市气象局,舟山,316004 |
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| 摘 要： | 文章分析了2002年7月16日浙江省北部地区的一次飑线天气过程。分析表明：高空前倾槽是这次飑线发生的大尺度环流背景，飑线发生在副热带高压边缘的不稳定区域。浙江省北部地区低层暖湿平流和地面的持续强烈升温，一方面为其积蓄了大量不稳定能量；另一方面高空冷平流形成并大大促进了这一地区的不稳定层结，这一不稳定层结主要是通过高空、地面的温度差动平流来实现的。水汽分析表明：低层850hPa的水汽输送是通过暖湿西南气流来实现的，强对流发生的浙江省北部地区正好处于低层850hPa干湿区交界中的露点锋区，而高层700hPa和500hPa的水汽输送却主要是通过西北气流来实现的。
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| 关 键 词： | 浙江北部地区 飑线 天气过程分析 高空前倾槽 天气预报 水汽输送 露点锋区 强雷暴 |
ANALYSIS OF A SQUALL WEATHER PROCESS OVER NORTHERN ZHEJIANG PROVINCE |
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| Wang Lei,Zhang Weihong,Lin Wei.ANALYSIS OF A SQUALL WEATHER PROCESS OVER NORTHERN ZHEJIANG PROVINCE[J].Meteorological Science and Technology,2003,31(2):97-100. |
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| Authors: | Wang Lei Zhang Weihong Lin Wei |
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| Abstract: | A squall weather process over the northern Zhejiang Province is analyzed. The results show that the squall took place under the condition of upper forward trough and in the instability area near the sub tropical high. The warm and moist temperature advection and the continious rising surface temperature over northern Zhejiang province stored a great energy of instability, and the upper cold temperature advection greatly promoted the instability. The water vapour analysis revealed that the warm and moist southwest air current at 850hPa transported water vapour to the squall occarence place where is just the interface of dry and moist air or the front zone of dew point, but the water vapour at 500hPa and 700hPa was transported by northwest air current. This is the squall weather process's feature. |
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| Keywords: | squall forward trough front of dew point water vapour transportation |
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