文档介绍：Fog and Haze/smog The “foggy city” The northeast of china will be faced with the pollution haze again with ing of the heating season. The occurence of the wide range of haze weather make Changchun the “foggy city” on October 25th. And it also es the the worst at air pollution in china. contents 2 Causes of hazy weather 3 The damage 4 The protective measures 1 Information of the Haze Information of the Haze Many cities in china are suffering from the same problem Information of the Haze Fog Haze Visibility Relative Humidity 1km-10km <80% <1km >90% Comparison of Fog&Haze Causes of hazy weather Large pollution emission (The burning of coal and oil) Disadvantageous of condition for dispersal (low atmospheric air pressure) Causes of hazy weather The damage 1 It may has a bad effect on our an and cardiovascular system 2 reducing the vision 3 spreading the diseases 4 not conducive to the growth of children 5 influencing the health The protective measures 2 wearing the formal mask 1 reducing outdoor exercise 3 drinking more water 4 do not open the window