摘要
利用内蒙古116个国家级地面气象观测站1981—2017年逐日雾观测数据,分析了内蒙古雾的气候特征。结果表明:(1)内蒙古年平均雾日数在空间上分布不均匀,雾日数最多的地区是呼伦贝尔市北部;(2)内蒙古雾日分布具有明显的季节特征,夏季比其他季节更易出现雾天气;(3)内蒙古多雾的站点分布在4个气候区,Ⅰ—Ⅲ区雾日数都显现出中间多,两头少的分布特征,Ⅳ区1—3月雾日数相对较多,4—6月雾日数最少,之后又呈现增多的趋势;(4)Ⅰ区雾日数年际变化特征明显,近37a呈现显著减少趋势,减少幅度为0.27d/10a,在1993年有一次明显的突变过程,Ⅱ—Ⅳ区年平均雾日数37a来呈现波动变化的特征,没有明显的增减趋势。
Using observed daily fog dates from 116 stations during 1981 to 2017 in Inner Mongolia, climate characteristics of fog in Inner Mongolia were analyzed. The results are as follows. （1）Annual mean fog days are not evenly distributed in space, fog days are mainly distributed over the northern Hulunbuir. （2）The distribution of fog days in Inner Mongolia have obvious seasonal characteristics, summer fog days are more than other seasons. （3）The foggy sites in Inner Mongolia are distributed in four climatic zones. The number of fog days in I-III area shows distribution characteristics of more distribution in the middle and less distribution in both ends. The number of fog days in the IV area is relatively high from January to March, and the foggy days are the least from April to June. Then there is an increasing trend. （4）The inter-annual variation of foggy days in area I is obvious, and it shows a signifcant decrease trend with a reduction of 0.27d/10a near 37 years. In 1993, there is an obvious mutation process, and the average annual foggy days in the II-IV area shows a fuctuation near 37 years. There is no obvious increase or decrease trend.
作者
孙玉
尤莉
刘天琦
Sun Yu;You Li;Liu Tianqi(Ordos Meteorological Bureau of Inner Mongolia,Inner Mongolia Ordos 017000;Inner Mongolia Climate Center,Inner Mongolia Hohhot 010051;Inner Mongolia Meteorological Information Center,Inner Mongolia Hohhot 010000)
出处
《内蒙古气象》
2018年第5期24-27,共4页
Meteorology Journal of Inner Mongolia
基金
内蒙古自治区气象局"内蒙古气象灾害风险区划"项目
"气候与气候变化创新团队"共同资助
关键词
内蒙古
雾
气候特征
M-K突变检验
Inner Mongolia
fog
Climatic characteristic
M-K mutation test
