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Tywais

Smoke, Smog, Dust 2012 Chiang Mai

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Yes, the worst for a few years.

Right now is the worst it's been in years?

Right now is pretty much the way it was visually every year between 2004 and 2007, I spent the subsequent years in Phuket so can't comment on them.

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Yes, the worst for a few years.

Right now is the worst it's been in years?

Right now is pretty much the way it was visually every year between 2004 and 2007, I spent the subsequent years in Phuket so can't comment on them.

I would say it is about the worse for 'this time' of year, mid February, that I've seen in a very long time. About 4-5 years ago I believe, March had visibility you could measure in meters and a dusty brown air. Suspect this is not near the worse for this year.

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So, how high can this (ug/m)^3 go until evacuation would be in order?

Thailand or "the real world"?

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So, how high can this (ug/m)^3 go until evacuation would be in order?

Thailand or "the real world"?

Well, I was thinking CM, which is "the real world" at the moment. laugh.png

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Does anyone know whether Nan is just as smoky as Chiang Mai right now?

These are the numbers from the aqmthai.com website. PM10 in red (ug/m)^3.

a67. Municipality Nan. 2012-02-17. 8:00:00. 0.9. 9.0. 14.0. 02.01. 92.92.

Chiang Mai is current at: Quite a bump from earlier today. Appears the Nam station is not updated as often so it could be close to the CM numbers by now.

35t. City Hall. 2012-02-17. 16:00:00. 2.0. 43.2. 55.7. 0.3. 123.45.

thank you sir.jap.gif

Im heading to the islands

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Believe some info on what PM10 (10 microns or less) means is needed. There is also a push for a PM2.5 (2.5 microns) as it is believed to be significantly worse for health. To put the size into perspective, the human hair average is around 100-150 microns.

The PM-10 standard includes particles with a diameter of 10 micrometers or less (0.0004 inches or one-seventh the width of a human hair). EPA's health-based national air quality standard for PM-10 is 50 µg/m3 (measured as an annual mean) and 150 µg/m3 (measured as a daily concentration). Major concerns for human health from exposure to PM-10 include: effects on breathing and respiratory systems, damage to lung tissue, cancer, and premature death. The elderly, children, and people with chronic lung disease, influenza, or asthma, are especially sensitive to the effects of particulate matter. Acidic PM-10 can also damage human-made materials and is a major cause of reduced visibility in many parts of the U.S. New scientific studies suggest that fine particles (smaller than 2.5 micrometers in diameter) may cause serious adverse health effects. As a result, EPA is considering setting a new standard for PM-2.5. In addition, EPA is reviewing whether revisions to the current PM-10 standards are warranted.

Source - EPA

Limits:

PM10 - 150ug/m^3 in a 24 hour period - Not to be exceeded more than once per year on average over 3 years.

Source - EPA

European Union Standard:

PM10 - 50ug/m^3 in 24 hour period for 35 times in a year.

Source EC Air Quality

Particulate Matter details

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So, how high can this (ug/m)^3 go until evacuation would be in order?

Evacuate, evacuate what/where, Chiang Mai province, the North, Thailand?

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Also, where are you guys getting the satellite burn images?

From this site > http://www.ehabich.info/

I followed a link from that site and found a fire mapper: http://firefly.geog.umd.edu/firemap/

You can see the country borders and zoom.

That's a great map, thanks, you can see once you zoom in that there's a shed load of fires to the North and West of us so my guess would be that CM itself is not the direct cause of the current problems.

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PM10 - 50ug/m^3 in 24 hour period for 35 times in a year.

This mean we are over the limit every year, no ?

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Removed an off topic, inappropriate remark and response to it. Let's keep this reasonably close to being on topic guys.

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PM10 - 50ug/m^3 in 24 hour period for 35 times in a year.

This mean we are over the limit every year, no ?

European standards are not the same as Thailand standards as was pointed out in the initial post on this aspect.

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Educating them in composting ain't going to work. At least it would work, though it was said tongue in cheek. hit-the-fan.gif

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BANGKOK 23 June 2018 02:19
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