不同路径冷空气导致的宁夏沙尘重污染天气特征及传输规律
袁瑞瑞, 王建英, 张卫红, 张肃诏, 王坤, 雍佳

Characteristics of heavy dust pollution weather coused by cold air with different routes in Ningxia, China
Ruirui Yuan, Jianying Wang, Weihong Zhang, Suzhao Zhang, Kun Wang, Jia Yong
图5 2018年5月21日00:00至22日12:00宁夏各地市AQI变化趋势
Fig.5 Hourly change of AQI in Ningxia from 00:00 on May 21 to 12:00 on May 22, 2018