Analysis of Mist and Haze Weather in Fushun City from 2004 to 2013

The observation data of Fushun City from 2004 to 2013 were analyzed.The results showed that the mist and haze weather in Fushun City were fluctuation trend. In recent 10 years,the average annual fog days were 152 days,of which the light fog days mainly,accounting for 95%;the annual total number of dense fog days accounted for only 3%. Beginning in 2008,the heavy fog and strong heavy fog days increased gradually,especially the heavy fog appeared 4 times in 2013,and the strong heavy fog appeared 7 times. The average annual haze days were 75 days,and with a slight haze weather primarily,accounting for the total haze day number 96%. The number of mild haze and moderate haze days gradually increased in 2012,The number of mild haze and moderate days was 12 d,2 d respectively in 2013. At the same time,the winter was not only a slight haze day number at most,but also mild haze and moderate haze days was the most. That winter was the season of high impact of haze weather in Fushun City.