Boundary-Layer Characteristics of Persistent Regional Haze Events and Heavy Haze Days in Eastern China

Table 2

Types of consecutive heavy haze days.

Type	Month
	3–5	6–8	9–11	12–2	1–12
EQP	3	1	5	3	12
ACF			4	8	12
BOH	1		3	1	5
BAH	3	1	4	2	10
INT	2		2	2	6
Others	2	1	1	1	5

Equalized pressure: EQP, advancing edge of a cold front: ACF, base of high pressure: BOH, backside of high pressure: BAH, and inverted trough: INT.