2020年1月呼和浩特市雾霾天气的气象成因分析
韩仙桃, 佟彤, 姜佳玉, 王俊秀, 赵毅勇

Meteorological cause of haze weather in Hohhot in January 2020
HAN Xiantao, TONG Tong, JIANG Jiayu, WANG Junxiu, ZHAO Yiyong
图2 2020年1月呼和浩特市AQI、PM2.5质量浓度、能见度逐日变化(a)及2013—2020年1月呼和浩特市雾霾污染日数的年际变化(b)
Fig.2 The daily changes of AQI, PM2.5 mass concentration and visibility in January 2020 (a), and inter-annual variation of haze days in January from 2013 to 2020 (b) in Hohhot of Inner Mongolia