Now you can compare Beijing PM 2.5 air quality readings on your phone

Posted on by Graham Webster

It just so happens that today is not one of the more beautiful days in Beijing. After a week of generally glorious fall weather, with exceedingly clear air (except once or twice), the national holiday is over and whatever process churns up the smog has resumed.

I’m not complaining. I haven’t been here long enough to get worked up about air quality. But it did lead me to check the China Air iPhone…

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Polluting in the new year!

Posted on by Graham Webster

First, of course, happy new year to all those greeting the year of the dragon this week. I, for one, am suitably stuffed.

Second, via Angel Hsu, this image depicting what is most likely a huge cloud of noxious firecracker emissions as Beijing celebrated the new year (which, being lunar, coincided with the new moon). Beijing has promised to provide real-time data on PM-2.5 (particle matter under 2.5 microns), thought to…

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Pollution from space, and human geography

Posted on by Graham Webster

A remarkable photograph published by NASA shows, as Angel Hsu notes, the pollution in the air during the climate talks in Tianjin earlier this month. The high-resolution image is striking, and will live on the desktop of my external monitor for some time.

NASA notes that this image captures an event that resulted from increased emissions and stagnant…

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