Figure 3: Surface weather maps at (a) 09:00 LST (00:00 UTC), October 26, 2003, and (b) 21:00 LST (12:00 UTC), supplied by KMA [26]. Square and thick line in (a) and (b) indicate Gobi Desert extending from the southern Mongolia to the northern China and cold front. Northwesterly wind in the left of cold front and southwesterly wind in the right of the front produced a main stream of dust particles originated from Gobi Desert toward Liaoning province in the northeastern China, which is far away from Gangneung city.