You are browsing the archive for Beijing smog Archives - Dan's Wild Wild Science Journal.
9 December 2015
Beijing Smog Reaches Hazardous Levels
The PM 2.5 level reached over 310 ppm in Beijing Tuesday, and this level makes the air hazardous to breathe. In the U.S. (and most major countries), a level over 35 ppm is considered unhealthful. In Beijing, schools are closed and severe road restrictions are in force., and you can thank clean coal for the problem. Oh, and just in case you haven’t seen the most disastrous PR spot of all …
12 January 2013
Deadly Frozen Smog Closes In On Beijing
Temps in Beijing are running around -5C and visibility is less than 200 meters in places. There is a large high pressure system over the region that is causing a strong temperature inversion. This means the air aloft is warmer than the air at the surface so smoke and soot from factories and trucks gets trapped over the city. A blob of warm smoke from a factory smoke stack will begin to rise because it is …