Fog strands 13,000 in Chengdu airport

As posted earlier this month we have had incredibly grey, misty, foggy weather here in Chengdu. I read today that our local airport, Shuangliu International, had a four-hour traffic shutdown on Monday February 2nd. Visibility was less than 20 meters and 500 meters is the minimum for a safe take-off. 13,000 people were stranded and this was the third closure this month. Otherwise weather conditions are looking up, it's getting warmer every day. So warm that I am beginning to suspect that there might be some truth to the traditional Chinese calendar after all!