Via NASA ’s Terra satellite come a astonishing view of China ’s pollution problem .
Via NASA :
China sufferedanother serious boutof air befoulment in December 2013 . When theModerate Resolution Imaging Spectroradiometer(MODIS ) on NASA’sTerrasatellite acquired this image on December 7 , 2013 , thick haze stretched from Beijing to Shanghai , a distance of about 1,200 kilometers ( 750 miles ) . For comparison , that is about the distance between Boston , Massachusetts , and Raleigh , North Carolina . The vivid areas are cloud or daze . Polluted aviation appears gray . While northeast China often face outbreaks of utmost smog , it is less common for pollution to spread so far south .
“ The fog has a bland surface on the top , which distinguishes it from mid- and high - level clouds that are more textured and have clear-cut trace on their edge , ” explained Rudolf Husar , music director of the Center for Air Pollution Impact and Trend Analysis at Washington University . “ If there is a pregnant haze layer on top of the fog , it appears brownish . In this eccentric , most of the fog over eastern China is costless of lofty haze , and most of the befoulment is trapped in the shallow wintertime boundary stratum of a few hundred meter . ”
At the time this image was captured , theair lineament index(AQI ) had reached 487 in Beijing and 404 in Shanghai . An AQI above 300 is believe wild to man .
[ NASA Earth Observatory ]
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