Comments on: what is the API and how is it calculated? http://www.livefrombeijing.com/2008/08/what-is-the-api-and-how-is-it-calculated/ Tue, 20 Jul 2010 06:09:54 -0600 http://wordpress.org/?v=2.8 hourly 1 By: Dunny http://www.livefrombeijing.com/2008/08/what-is-the-api-and-how-is-it-calculated/comment-page-1/#comment-305 Dunny Fri, 25 Sep 2009 04:05:39 +0000 http://www.livefrombeijing.com/2008/08/what-is-the-api-and-how-is-it-calculated/#comment-305 That's interesting that of the 3 pollutants that they measure, 2 are chemical compounds (SO2 and NO2) and PM10 is simply a measure of any particulate 10 microns or smaller? I guess that's why it's typically the dominant pollutant, since it's not tied to a particular compound? I would imagine that the tests for NO2 and SO2 use chemical reactions, where PM10 is just a filter? What is the dominant source of PM10 in beijing? Neat stuff -- sorry to be a year behind on this one... I clicked on "popular posts" shoulda known better. That’s interesting that of the 3 pollutants that they measure, 2 are chemical compounds (SO2 and NO2) and PM10 is simply a measure of any particulate 10 microns or smaller? I guess that’s why it’s typically the dominant pollutant, since it’s not tied to a particular compound? I would imagine that the tests for NO2 and SO2 use chemical reactions, where PM10 is just a filter? What is the dominant source of PM10 in beijing?

Neat stuff — sorry to be a year behind on this one… I clicked on “popular posts”

shoulda known better.

]]> By: Rob http://www.livefrombeijing.com/2008/08/what-is-the-api-and-how-is-it-calculated/comment-page-1/#comment-6 Rob Mon, 04 Aug 2008 05:04:00 +0000 http://www.livefrombeijing.com/2008/08/what-is-the-api-and-how-is-it-calculated/#comment-6 What's the difference between the scale you have listed here, and the new roman numeral scale that, as you have observed, is now posted on the Olympic air quality site?<br/><br/>I guess the roman numeral scale has no particular value? Or do you just expect that it will eventually change sometime before the Olympics? What’s the difference between the scale you have listed here, and the new roman numeral scale that, as you have observed, is now posted on the Olympic air quality site?

I guess the roman numeral scale has no particular value? Or do you just expect that it will eventually change sometime before the Olympics?

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