affected by the cold air south

Hou Cheap Fendi Sunglasses Min intern reporter Liu Shixin

environmental protection department today released information that, North China area, the central and western regions and northeast lasted from October 22nd to today's haze or will continue until the end of the month. This has encountered the Jingjinji region of third large area air pollution since October.

according to the analysis Chinese environment monitoring station forecast center in October 26th, affected by the cold air south, the weather of Beijing Tianjin Hebei region in the north will be improved, the overall benefit but limited diffusion conditions. 28 days, 29 days, 30 days of water vapor is larger, weak wind, particles as condensation nuclei are rapidly generated in favor of fog or haze particles, easy to speed up the formation and accumulation of atmospheric pollution.

so, in addition to 26 days is expected to better air quality situation slightly, the Beijing Tianjin Hebei Province during the period from October 25th to 30, the south central may appear severe pollution process, may appear serious pollution in local area. Cheap Ray Ban Sunglasses

from October 31st to November 3rd, except for 31 days with large uncertainties, Cheap GUCCI Sunglasses the other time period of pollutant diffusion, transfer, settlement conditions are generally more favorable, the air quality situation is better; at the same time, the Beijing Tianjin Hebei is expected to start the implementation of emission reduction measures, can further benefit the air quality improvement. Preliminary estimate of October 31st is a deviation from the better air quality status of turning, Beijing during November 1st to 3 days Hebei area may better air quality most.

in the Beijing Tianjin Hebei Ministry of Oakley Sunglasses cheap environmental protection was held today and the surrounding areas of air heavy air pollution process expert interpretation on the meeting, analysis Chinese environmental monitoring center researcher Gong Zhengyu, causes the air heavy pollution process mainly has 4 aspects:

is a large quantity of pollutant discharge. Coal, motor vehicles, industrial, construction and road dust and other major emission sources, is the root cause of the heavy pollution weather. Beijing, Tianjin, Shijiazhuang and other cities, power plant, boiler and motor vehicle retains the quantity is larger, all kinds of pollutant emissions city run brought very big.

second is the diffusion of unfavorable conditions. October 7th ~ 11 day stable weather, low air pressure, humidity, wind speed is small, the inversion condition is serious, the mixing layer height of Beijing fell sharply, the lowest is only 300 ~ 500 meters, is normally 20% ~ 30%, the pollutant is compressed in the near surface layer, the disadvantageous weather conditions can easily lead to the accumulation of pollutants, pollutant a sharp increase in the concentration of. At the same time, because of fog and haze concurrent coexistence, high humidity caused by large particles hygroscopic growth, resulting in increased concentration of pollutant accumulation.

third is the burning of straw significantly affected. According to the satellite remote sensing monitoring, October 5th ~ 10 were monitored to fire 278 points; October 17th to 20 days to detect the fire point of 659; in October 23 were monitored to fire 106 points. The pollution component monitoring shows that the growth of biomass combustion is indicative of the concentration of the components is more than 10 times more. The burning of straw on the heavy pollution formation and increase has Cheap Prada Sunglasses played the role of fire.

fourth is a regional pollution >