阿拉山口地区2011~2020年极端大风天气特征统计与分析  

Statistics and Analysis of Extreme Gale Weather Characteristics in Alashankou Region from 2011 to 2020

作　　者：成文杰 姜鹏 李双君 沈戈弋 依扎提•托留别克 

机构地区：[1]阿拉山口市气象局,新疆 阿拉山口 [2]湖北省气象台,湖北 武汉

出　　处：《气候变化研究快报》2023年第1期199-210,共12页Climate Change Research Letters

摘　　要：利用阿拉山口地区2011~2020年常规地面气象观测资料和NCEP 1˚ ×1˚的6 h再分析资料进行统计分析,以阿拉山口地区影响大、持续时间长的极端大风天气过程作为典型个例进行统计和分析,在对500 hPa高空形式和海平面气压场分析的基础上,结果显示:阿拉山口地区一年中大风日数最多的季节为夏季(6~8月),春季(3~5月)次之,冬季最少,但极大风速则是春季最大,夏季次之,秋季最小。500 hPa高度场低值系统和地面冷高压的东移南下是造成阿拉山口地区极端大风天气过程的主要影响系统。With the conventional surface meteorological observation data and NCEP1˚ in Alashankou region from 2011 to 2020 ×1˚ 6 h reanalysis data, this research intends to take the extreme gale weather process with great influence and long duration in Alashankou area as a typical case for statistics and analysis. Based on the analysis of 500 hPa upper air form and sea level pressure field, the results show that the season with the most gale days in a year in Alashankou area is summer (June~August), followed by spring (March~May), and the winter is the least, but the maximum wind speed is spring, summer comes next, and autumn is the least. The low value system of 500 hPa height field and the eastward movement and southward movement of the surface cold high are the main influence systems that cause the extreme gale weather process in the Alashankou area.

关 键 词：阿拉山口风区 极端大风 冷高压 天气特征分析 

分 类 号：P45[天文地球—大气科学及气象学]