摘要
利用彰武县气象局本站观测的常规气象要素资料,结合2007~2020年的大气降尘量数据,对彰武县大气降尘变化规律及其气象影响要素进行分析。结果表明:降尘量总体呈M型逐年增加,但趋势不明显;春季降尘量占全年总量的76.7%,与其他季节存在显著差异,其中4月降尘量占全年降尘总量41.4%。降尘量主要与风沙扬尘天气日数、风向风速、相对湿度等气象要素相关,运用逐步回归分析法得到最优线性回归方程,通过其回归系数的相对贡献率发现彰武县降尘量主要受相对湿度和平均风速的影响。
Based on the conventional meteorological data observed by Zhangwu Meteorological Bureau,combined with the atmospheric dust fall data from 2007 to 2020,the variation law of atmospheric dust falls and its meteorological influencing factors in Zhangwu county were analyzed.The results showed that the overall dust falls were increasing as M-shaped year by year,but the trend was not obvious.Spring dust falls accouned for 76.7%of the annual total,significantly differed from the and other seasons.The dust falls in April accounted for 41.4%of the total annual dust fall.The amount of dust falls is mainly related to meteorological factors such as wind-sand dust weather days,wind direction,wind speed,relative humidity,etc.The optimal linear regression equation was obtained by stepwise regression analysis.The relative contribution rate of regression coefficient showed that the dust falls in Zhangwu county were mainly affected by relative humidity and average wind speed.
作者
夏冬冬
XIA Dongdong(Zhangwu Meteorological Bureau,Zhangwu 123200,China)
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2022年第5期127-132,共6页
Journal of Arid Land Resources and Environment
基金
阜新市气象局科学技术研究课题项目(FX2021-11)资助。
关键词
大气降尘
秩相关系数
单因素方差分析
气象要素
彰武县
atmospheric dust fall
Rank correlation coefficient
one-way ANOVA
meteorological factors
Zhangwu county
作者简介
夏冬冬(1996-),女,蒙古族,辽宁彰武人,助理工程师,主要从事综合气象业务的研究。E-mail:lnszwxxdd@163.com。
