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气象:2023,49(1):122-128
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2022年10月大气环流和天气分析
渠鸿宇,黄彬,高拴柱,钟海玲,郭艳君,刘达
(国家气象中心,北京 100081; 国家气候中心,北京 100081)
Analysis of the October 2022 Atmospheric Circulation and Weather
QU Hongyu,HUANG Bin,GAO Shuanzhu,ZHONG Hailing,GUO Yanjun,LIU Da
(National Meteorological Centre, Beijing 100081; National Climate Centre, Beijing 100081)
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投稿时间:2022-11-22    修订日期:2022-12-12
中文摘要: 2022年10月大气环流的主要特征是北半球极涡呈单极型分布且较常年同期强度偏强,欧亚地区中高纬环流呈“两槽一脊”型,西太平洋副热带高压较常年位置偏西、偏北,强度偏强。10月,全国平均气温为10.8℃,较常年同期(10.6℃)偏高0.2℃;全国平均降水量为34.4 mm,比常年同期(35.6 mm)偏少3.4%。月内我国有2次暴雨天气过程,一次受高空槽、低空急流和副热带高压影响,另一次受台风尼格和高空槽影响。10月共有5个热带气旋在南海和西北太平洋活动,生成个数较常年偏多1.2个,无登陆台风(较常年偏少),其中台风桑卡、纳沙和尼格影响南海、海南岛和华南地区。长江以北气象干旱缓和,长江以南气象干旱持续。
Abstract:The main characteristics of the general atmospheric circulation in October 2022 are as follows. There was a single polar vortex center in the Northern Hemisphere, which was stronger than normal. The circulation at middle-high latitudes of the Eurasian showed the “two troughs and one ridge” pattern. Compared to the normal state, the Western Pacific subtropical high was stronger, and the location was westward and northward. The monthly mean temperature was 10.8℃, higher than the normal value (10.6℃) by 0.2℃. The monthly mean precipitation was 34.4 mm, 3.4% less than normal (35.6 mm). There were two torrential rain processes in China in October: one was affected by the upper-air trough, low-level jet and subtropical high, and the other by the No.2222 Typhoon Nalgae and the high trough. In October, a total of five tropical cyclones were active in the South China Sea and the western North Pacific, with the number of the tropical cyclones more than normal by 1.2. There were no landing typhoons, fewer than normal. Among them, Typhoon Sanka (No.2219), Typhoon Nansha (No.2220) and Typhoon Nalgae (No.2222) affected the South China Sea, Hainan Island and South China. The meteorological drought to the north of the Yangtze River got relieved, but the drought to the south of the Yangtze River persisted.
文章编号:     中图分类号:P448,P458    文献标志码:
基金项目:国家重点研发计划(2019FYC1510102)资助
引用文本:
渠鸿宇,黄彬,高拴柱,钟海玲,郭艳君,刘达,2023.2022年10月大气环流和天气分析[J].气象,49(1):122-128.
QU Hongyu,HUANG Bin,GAO Shuanzhu,ZHONG Hailing,GUO Yanjun,LIU Da,2023.Analysis of the October 2022 Atmospheric Circulation and Weather[J].Meteor Mon,49(1):122-128.