庚子年旅大地区一次暴雨天气过程分析  

Analysis of a Rainstorm Weather Process in LyvShun-DaLian in 2020

作　　者：宫鹏涛[1] 刘志宏[1] 陈晓斌[1] 

机构地区：[1]中国人民解放军92538部队,辽宁 大连

出　　处：《自然科学》2021年第6期867-871,共5页Open Journal of Nature Science

摘　　要：本文针对中秋节前江淮气旋北上,对旅顺–大连地区带来强降水天气现象进行了简要分析。分析发现,当云–贵–川地区有西南涡形成,且涡后有弱冷空气不断注入,其地面倒槽容易形成闭合的低压环流。当9月下旬副高逆势变强,脊线位置北抬西伸至华南甚至西南地区,在青藏高压和副热带高压的共同作用下,南伸的西风槽容易在江淮地区长时间停留,“两高一低”且温度槽落后于气压槽的天气形势有利于江淮气旋的发生、发展,对其偏北的移动路径有着重要的影响。This paper briefly analyzed the weather phenomenon of heavy precipitation in LyvShun-DaLian before the Mid-Autumn Festival. It is found that when a southwest vortex is formed in Yunnan-Guizhou-Sichuan region and weak cold air is continuously injected behind the vortex, the surface inverted trough is easy to form a closed low-pressure circulation. When the subtropical high becomes strong in late September, ridgeline raises to south and southwest region. In the common influence of the Tibetan high and the subtropical high, the west wind trough will stay for a long time in Changjiang-Huaihe region. The “two high pressure and one low pressure” slot behind the weather situation in pressure trough and temperature is beneficial to the occurrence and development of Changjiang-Huaihe cyclone, and the moving path of the north has an important influence.

关 键 词：西南涡 江淮气旋 副高 偏北路径 强降水 

分 类 号：P45[天文地球—大气科学及气象学]