The Impacts of Different PBL Schemes on the Simulation of PM_2.5 during Severe Haze Episodes in the Jing-Jin-Ji Region and Its Surroundings in China

Table 2

Comparisons of statistical indicators of PM_2.5. (Haze: February 21 to 25, daytime, 00:00–11:00 UTC; night, 12:00–24:00 UTC. Clean days: February 3 to 5. Unit: μg m⁻³.)

	YSU		MYJ		Boulac
	MB	NMB	MB	NMB	MB	NMB
Whole month	17.7	15.9%	24.5	22.0%	21.2	19.0%
Haze episode	−2.5	−1.4%	5.4	3.0%	0.13	0.5%
Haze daytime	−11.8	−6.8%	−1.8	−1.0%	−8.1	−4.6%
Haze night	7.2	4.0%	13.2	7.3%	8.9	4.9%
	NME	RMSE	NME	RMSE	NME	RMSE
Whole month	49.8%	104.0	52.5%	106.0	49.8%	103.8
Haze episode	31.2%	76.6	31.4%	75.4	31.2%	74.6
Haze daytime	31.0%	76.6	30.6%	73.9	30.6%	75.8
Haze night	31.4%	76.6	32.1%	76.9	31.8%	77.5
Haze/clean	174.4/64.9		182.4/70.4		177.1/69.2
	Haze	Clean	Haze	Clean	Haze	Clean
Maximum	217.8	22.2	220.5	30.4	220.6	27.6
Minimum	98.1	24.4	100.2	26.7	105.8	28.5