A Study on Parameterization of the Beijing Winter Heavy Haze Events Associated with Height of Pollution Mixing Layer

Table 3

Observations and H_PML of “Azure Sky.”

Station	Lon.	Lat.	(hPa)	(°C)	Wind dir. (d.)	Speed (m/s)	Vis. (m)	RH ($)	H_PML (m)	AQI level	W	PM2.5 (µg/m^3)
Dabancheng	88.3	43.4	1038	−13	69	1	30	47.1	1074	1	Blue sky	59.0
Yiwu	94.7	43.3	1041	−19	220	1	24	45.4	1061	1	Blue sky	19.5
Dingxin	99.5	40.3	1038	−10	171	1	19	13.2	2738	1	Blue sky	30.9
Dulan	98.5	36.9	1014	−4	304	2	30	22.6	2196	1	Blue sky	11.5
Xinghai	100.0	35.6	1015	−4	280	1	35	18.6	2451	1	Blue sky	5.3
Hailisu	106.0	41.4	1033	−10	247	4	17	13.2	2738	1	Blue sky	35.6
Wuzhong	106.0	38.0	1027	1	343	0	13	47	1227	2	Blue sky	44.9
Xiji	106.0	36.0	1027	−3	355	0	9	36.9	1537	2	Blue sky	60.0
Average			1029	−8	249	1.3	22.1	31	1878	1		33.4