摘要
文章利用拐子湖地面气象观测站1960年1月1日—2017年12月31日每日地面常规观测数据,统计了每月浮尘、扬沙、沙尘暴、强沙尘暴、特强沙尘暴日数,利用统计方法分析拐子湖地区沙尘天气的月、季、年变化特征。结果表明:⑴拐子湖地区1960—2017年共出现4989d沙尘天气,其中浮尘出现了453d,扬沙2841d,沙尘暴1374d,强沙尘暴302d,特强沙尘暴19d;⑵总体来看,沙尘天气由1月开始逐月增加,到4、5月最多,然后逐渐减少;春季出现最多,其次是夏季,浮尘秋季出现最少,其他均是冬季出现最少;20世纪60年代、尤其是70、80年代出现较多,然后逐渐减少,减少幅度大于增加幅度,总的来看呈波动下降趋势。
Based on the daily surface meteorological observation data of Guaizi Lake from January 1, 1960 to December 31, 2017,the number days of floating dust, raising sand, sand storms, heavy dust storms and extra strong dust storms in each month wascounted. The monthly, seasonal and annual changes of dust weather in Guaizi Lake were anlyzed by statiscal method, the resultsshow that there were 4989 sand days occurred in Guaizi Lake from 1960 to 2017, of which 453 floating dust days, 2841 raising sanddays, 1374 sand storms days, 302 heavy dust storms days and 19 extra strong dust storms days（1）. The dust weather increased fromJanuary to April and May, and then gradually decreased. Most dust days in Spring, followed by summer. with the least floating dustdays in autumn, and the others are the least in winter. There were more dust days in the 1960s, especially in the 1970s and 1980s, andthen gradually decreased, the reduction greater than the increase. In general , there was a fluctuation downward trend of dust days （2）.
作者
许延强
Xu Yanqiang(Inner Mongolia Alxa League Jiaozi Lake Weather Station,Inner Mongolia Guaizi Lake 73540)
出处
《内蒙古气象》
2018年第4期18-20,共3页
Meteorology Journal of Inner Mongolia
关键词
沙尘天气
时间
特征
拐子湖
sand and dust weather
time
characteristics
Guaizi Lake
