Over on Trans Pacifica, Graham Webster points out that the China Air Pollution Index application has recently gotten a little bit better, for anyone concerned about monitoring air quality in Beijing:
Before, you would see only PM 2.5 (particle matter under 2.5 micrometers in diameter) for the U.S. embassy reading, and only PM 10 (10 micrometers), sulfur dioxide, and nitrogen dioxide. The app gives indices derived from each source’s standards, but the data weren’t directly comparable. These pollutants don’t necessarily come in tandem or in proportion. Now, however, you can compare PM 2.5 readings from both sources.
Check out more on why the PM 2.5 measurement is important in our previous story on this app.
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