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

<div>Surface conditions of regional haze days (equalized pressure: EQP, advancing edge of a cold front: ACF, base of high pressure: BOH, backside of high pressure: BAH, inverted trough: INT, and saddle pressure: SAP).</div>

Advances in Meteorology

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Figure 2

Figure 2: Boundary-Layer Characteristics of Persistent Regional Haze Events and Heavy Haze Days in Eastern China 