2003-2022年祁连山区暴雨日数的时空分布特征  

Spatiotemporal distribution characteristics of rainstorm days in Qilian Mountains from 2003 to 2022

作　　者：文海鹏 马智 张莹 Wen Haipeng;Ma Zhi;Zhang Ying(Qilian County Meteorological Bureau,Qilian 810400)

机构地区：[1]祁连县气象局,祁连810400

出　　处：《气象水文海洋仪器》2024年第5期53-55,共3页Meteorological,Hydrological and Marine Instruments

摘　　要：为了研究祁连山区暴雨日数的时空分布特征和规律,文章利用2003-2022年祁连山区国家气象站和区域自动气象站暴雨逐日的降水资料,以及暴雨量的探测数据,利用数理统计、滑动平均法、气候倾向率估计法分析了祁连山区暴雨的时空分布特征。结果表明:祁连山区暴雨日数在不同年份和季节呈现出不同的变化趋势;从空间分布上来看,东部和南部地区的暴雨日数较多,而西部和北部地区的暴雨日数较少;祁连山区的气候因素与地形因素对暴雨日数均有一定程度的影响,高海拔地区通常暴雨日数较多,这与高山地形导致的气流上升和降水增加有关。In order to study the spatiotemporal distribution characteristics and regularity of rainstorm days in the Qilian Mountains,this paper analyzes the spatiotemporal distribution characteristics of rainstorm in the Qilian Mountains by using the daily precipitation data of rainstorm from 2003 to 2022 from the national meteorological station and the regional automatic meteorological station in the Qilian Mountains,as well as the observation data of rainstorm amount.The results show that the number of rainstorm days in the Qilian Mountains presents different trends in different years and seasons.From the perspective of spatial distribution,the eastern and southern regions have more rainstorm days,while the western and northern regions have less rainstorm days.Climatic factors and topographic factors in Qilian Mountains have a certain degree of influence on the number of rainstorm days.High altitude areas usually have more rainstorm days,which is related to the rise of air flow and increase of precipitation caused by mountain topography.

关 键 词：祁连山区 暴雨 日数 时空分布 气候特征 

分 类 号：P426[天文地球—大气科学及气象学]