Fog Formation in Cold Season in Ji’nan, China: Case Analyses with Application of HYSPLIT Model

Table 1

Start time, duration, average surface air temperature, relative humidity, and weather conditions before and after fog for the four fog events occurring in Ji’nan during the period from March 2012 to February 2014.

Start time	Duration (h)	Surface temp. (°C)	Surface RH (%)	Weather before fog	Weather after fog	Note
Jan. 13, 2013 23:00	42	−2.5	90.2	Haze	Haze	Interrupt for ~15 hours in daytime
Jan. 28, 2013 23:00	81	0.5	95.5	Haze	Clear	Interrupt for several hours in daytime
Nov. 02, 2013 23:00	33	9.9	91.9	Light rain	Clear	Interrupt for several hours in daytime
Feb. 01, 2014 05:00	30	2.5	94.5	Haze	Haze