摘要
利用成都及周边地区（包括眉山、广汉、绵阳、德阳）1980 ～2010年的地面气象观测资料,基于多种统计方法对该地区霾日的时空分布特征进行了详细分析.结果表明,（1）成都及周边地区的年平均霾日数整体呈增加趋势,尤其是近5年.霾日的季节变化主要表现为：冬季最多,秋季和春季次之,夏季最少,且夏、秋和冬三季霾日数均呈增加趋势,春季反之.霾日的月变化十分显著,大体呈“V”字型,最多出现在12月,最少出现在6月.（2）年平均霾日的空间分布基本一致,高值区主要分布在成都西南部以及东部的金堂、广汉、德阳、绵阳,低值区分布在成都北部.
Using the ground meteorological observation data of Chengdu and its surrounding areas （including Meishan, Guanghan, Mianyang and Deyang） during 1980 -2010, based on kinds of statistical methods, the spatial -temporal distribution characteristics of haze days in this region are analyzed in detail. The results show that the annual average haze days in Chengdu and its surrounding have an increasing tendency, especially in last five years. Seasonal average variation of haze days main perforrne that winter is most, autumn and spring are next, summer is at least, and the haze days in this region are increas- ing in summer, autumn and winter, but decreasing in spring. A significant difference of monthly average haze days generally shows a ＂V＂ word, the maximum haze days occur in December and the minimum in June. The annual average of haze days are consistent, high value areas distribute in the southwest of Chengdu and the eastern Jintang, Guanghan, Deyang, Mianyang, but the low value areas distribute in the north of Chengdu.
出处
《高原山地气象研究》
2014年第2期63-67,共5页
Plateau and Mountain Meteorology Research
基金
四川省环境保护重大科技专项(2013HBZX01)
成都市温江区环境气象要素对雾霾的影响研究(PAEKL-2014-K3)
关键词
成都及周边地区
霾
时空分布
Chengdu and surrounding areas, haze, spatial and temporal variation
