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中文摘要: 利用红外云图及对流层上层（300hPa）常规资料，对2001年6月18日发生在河南省鹤壁、安阳地区的飑线天气过程进行诊断分析。结果表明：由于纬向型内蒙古低涡在东移、南压过程中转为经向型，致使高空强冷平流南下豫北，增强了豫北气层的不稳定性；低层舌状高假相当位温的流入，使低层增温、增湿，形成位势不稳定层结；高空低涡西南侧的正涡度平流和郑州、邢台之间的风速切变，为强对流天气的发生提供了动力条件。
中文关键词: 内蒙古低涡，红外云图，飑线，诊断分析
Abstract:Based on the infrared images and conventional data,a Squall weather process on 18,June 2001 is diagnosed.The results show that since a longitudinal Inner Mongolia low vortex turned into latitudinal pattern in the eastward and southward process,a severe northerly cold flow went down to the northern Henan Province,and then,the air was getting more instable.In the lower layer,because the inflow of a tongue of potential pseudo-equivalent temperature made air warmer and wetter,a potential instablility stratification was formed.The positive vorticity advection in the southwest of the low vortex in the upper layer and wind shear between Zhengzhou,Henan Province and Xingtai,Hebei Province provided the dynamical conditions for the occurrence of severe convective weather.
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基金项目:
| 作者 | 单位 |
| 王军 | 河南省鹤壁市气象局，458000 |
| 周官辉 | 河南省鹤壁市气象局，458000 |
| 杜滨鹤 | 河南省鹤壁市气象局，458000 |
| 孙日丁 | 河南省鹤壁市气象局，458000 |
| 邢用书 | 河南省鹤壁市气象局，458000 |
| 芦阿咪 | 河南省鹤壁市气象局，458000 |
| 孙玉巧 | 河南省安阳市气象局 |
| Author Name | Affiliation |
引用文本：
王军,周官辉,杜滨鹤,孙日丁,邢用书,芦阿咪,孙玉巧,2002.豫北一次飑线天气过程分析[J].气象,28(11):37-41.
,2002.Analysis of a Squall Weather Process over Northern Henan[J].Meteor Mon,28(11):37-41.
王军,周官辉,杜滨鹤,孙日丁,邢用书,芦阿咪,孙玉巧,2002.豫北一次飑线天气过程分析[J].气象,28(11):37-41.
,2002.Analysis of a Squall Weather Process over Northern Henan[J].Meteor Mon,28(11):37-41.