Comments for livefrombeijing

Comment on where to find api data by Vance

Vance — Thu, 12 Jan 2012 09:38:41 +0000

Dear Jean-pierre,

PM10 refers to all particles with diameter smaller than 10 microns. So, it includes PM2.5.

Vance

Comment on where to find api data by Dhenin

Dhenin — Thu, 12 Jan 2012 03:40:14 +0000

I would like to know about the PM 10 index.

Does it refer to all particles with a size less than 10 micrometer (including 2.5) or does it refer only to coarse particles (between 2.5 and 10) ?

Thanks for your reply

Regards

Jean-pierre Dhenin

Comment on summary of beijing’s 2011 air quality by foggybeijing

foggybeijing — Sun, 08 Jan 2012 07:12:56 +0000

Hi Vance,
thanx for this detailed report. This is super-valuable information as usual.
We’ve made a few charts about 2010 versus 2011 here: http://foggybeijing.com/data/yearly/beijing
(this is only based on the data from the US Embassy).

Cheers,
Michael.

Comment on xinhua english reports on beijing’s pollution, using usa terminology by Vance

Vance — Mon, 02 Jan 2012 11:52:00 +0000

Erica,

Thanks for pointing out the typo. I’ve corrected it in the post!

Vance

Comment on beijing epb on the hotseat by Vance

Vance — Mon, 02 Jan 2012 11:44:31 +0000

Jennifer:

I haven’t looked in depth at SH-specific resources. Check this site for a good comparison of what’s available: http://www.purelivingchina.com/2011/11/shootout-of-the-best-shanghai-air-quality-reporting-websites/

Jason:

I just published a review of all of 2011 that includes PM10 trends for the past decade: http://www.livefrombeijing.com/2011/12/summary-of-beijings-2011-air-quality/. Since the Chinese government doesn’t report PM2.5, I’ve not looked in depth at trends yet. Some independent research studies are suggesting that PM2.5 is increasing, which is bad news. I’ll try to get a post up summarizing what groups out there are measuring PM2.5, and what they’re finding.

Thanks for the comments and questions.

Vance

Comment on us embassy doubles down on data sharing by Skander

Skander — Wed, 07 Dec 2011 16:22:46 +0000

The Beijing Air just went to good after a prolonged outage – are we think it has been harmonized with the CCP monitors ? Am not noticed a dramatic change or is it just me ?

Comment on us embassy doubles down on data sharing by gregorylent

gregorylent — Wed, 16 Nov 2011 02:33:33 +0000

put the chinese data in or go home

Comment on beijing epb on the hotseat by Jason

Jason — Mon, 14 Nov 2011 02:04:28 +0000

I agree — great to have you back! With all of the recent articles and discussions, I’ve been regularly checking your site to get your perspective.

I’m curious, in addition to conducting an Oct 2011 vs. Oct 2010 and Oct 2009, have you assessed the overall trends over the past 2-3 years in PM10 and PM2.5?

Thanks for your information sharing.

Comment on beijing epb on the hotseat by Jennifer

Jennifer — Sun, 13 Nov 2011 10:46:19 +0000

Glad to have you back! I’ve been waiting for the next feed. The air in Beijing has led us to relocate to Shanghai where the air is better… Our respiratory problems have improved in the AQI 100-150 air.
I hear so much about Beijing air but now that I am in Shanghai, it’s much harder to find reliable information about the air quality here. Do you know of any reliable feeds for this area?

Comment on what is the API and how is it calculated? by Gerry Beauregard

Gerry Beauregard — Wed, 12 Oct 2011 04:04:50 +0000

For what it’s worth… in cases where the PM10 dominates, the Chinese API is equivalent to Singapore’s PSI, with exactly the same piece-wise linear function as described here:

http://app2.nea.gov.sg/data/cmsresource/20090401682645441976.pdf

Sounds like the air pollution is just dreadful in Beijing. Personally I find that once the PSI gets above 50 (into the “Moderate” range, as defined here http://www.nea.gov.sg/psi/), the air is already bad enough that I avoid vigorous outdoor exercise (e.g. trail running), and when it’s over 100 (very rare), I avoid going outside entirely.