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Chiang Mai air polluted far above safe levels

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Chiang Mai air polluted far above safe levels

By Pathinya Srisupamart 
The Nation

 

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The amount of small dust particles in Chiang Mai province has risen sharply after the 51-day ban on outdoor fires ended last Friday.
 

The ban had been imposed between March 1 and April 20 as a measure to fight air pollution. 

 

As of press time on Sunday, the sacred Doi Suthep Mountain was almost invisible to the naked eye. Satellite images have revealed that the number of hotspots, which are widely blamed for increasing the amount of dangerous dust particles, have jumped during the past two days.

 

Health experts have said the amount of PM2.5 particles, for example, have already far exceeded the level that could be harmful to health. 

 

People are advised to avoid outdoor activities. If they need to go out, they should wear a mask as a precaution. The N95 standard is required to filter PM2.5 particulates.

 

Assoc Professor Sate Sampattagul, who heads the Chiang Mai University’s Climate Change Data Centre, said on Sunday that locals had largely complied with the ban this y ear. 

 

“So after the ban is lifted, there are a large amount of weeds to burn down. Locals want to act fast or else the rain might arrive first,” he said. 

 

He said after the ban ended, the amount of small dust particles soared significantly. 

 

In Chiang Mai’s Chom Thong district, the amount of the dangerous PM2.5 reached 316 microgram per cubic metre of air, while the amount of PM10 rose to 332 microgram per cubic metre of air. 

 

“This is beyond safe limits,” Sate added. 

 

According to the World Health Organisation, the amount of PM2.5 should not go beyond 25 μg/m3 for a 24-hour mean, while Thailand’s standards double that to 50 μg/m3. And PM 10, should not exceed 50 μg/m3 for a 24-hour mean. 

 

Sate continued to hope that the smog problem will ease after the temperature begins to rise. 

 

“The situation will improve as season changes,” he predicted. 

 

Source: http://www.nationmultimedia.com/detail/breakingnews/30343703

 
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-- © Copyright The Nation 2018-04-23

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39 minutes ago, YetAnother said:

why is the thai standard double ? ah yes , because the rest of the world 'doesn't understand us'

Because 98% of the world doesn't meet the WHO standards so at least the Thai standard is realistic and applicable to today rather than being a  wish for the future.

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12 minutes ago, RotMahKid said:

Everybody in the northen knows the time of the ban was way to short, started to late and ended to early. In fact it should be a whole year ban and teach the people to use the weed as fertilizers, but for a start let the ban begin on the 1st of Jan and end the last day of April, but who am I.

Not a rural hilltribe farmer, that's who you are and with no appreciation of the problem.

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15 minutes ago, brommers said:

Can anyone point out any form of effective measure taken by the rulers in Bangkok or their local reps?! The burning ban was utterly ineffective because records clearly show that almost daily the Chiang Mai pollution was many times worse than even the lax Thai standards. Now the ban has been lifted I can clearly smell smoke and the pollution only goes from seriously bad to disastrous. 

 

Technology in the form of  mobile phone apps linked to air quality measurement devices has exposed the utter incompetence of the authorities, and as people become increasingly better informed the almost wilful neglect of public health safety will become a bigger issue. But until local people rather than farangs start to really voice their anger and take the issue to the ballot box the powers that be will do nothing.

 

Our esteemed governor's only action seems to have been threats against a schoolboy who created a powerful image of the seriousness of the situation by using the 3 Kings wearing masks as the core of his message. Shame on you governor, for having no moral authority and no capability to deal with this crisis.

You draw a relationship between burning in Thailand and airborne pollution here, that may not be a valid relationship.

 

And since you go on to state that now the ban has been lifted you can smell smoke and that the situation is getting worse, logically, you just said the ban was effective!

 

Technology cannot easily play a role in separating the volume of burning from the effects of the inversion layer, if twenty farmers burn land and that smoke is trapped by the inversion layer, the pollution readings would be higher than if a hundred farmers burned land and the smoke allowed to escape. Technology cannot also disseminate the polluted air that originated in Thailand and the bad air that was blown in across borders. 

 

Once again, I live in the middle of a lot of rice paddy and nobody here burned anything, not one single farmer.

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1 minute ago, Tarteso said:

North Chiang Mai today...Image1524449148.429810.jpg

Ah yes, AirVisual, owned by IQAir, makers of the famed air purifiers, the company that uses modelled data to produce their numbers rather than actual readings!

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'Amazing' stink even over here in Phayao Centrale last couple of evenings, never experienced this strong ... guess i wouldn't be too happy with say another 20, 25yrs on my back.

One can only hope the rain predicted for around middle of the week really does show up ! 

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Ah yes, AirVisual, owned by IQAir, makers of the famed air purifiers, the company that uses modelled data to produce their numbers rather than actual readings!

Agree, whatever, can not see today my trees becouse the smog. Could you give advice for any right app? Thanks
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45 minutes ago, Tarteso said:


Agree, whatever, can not see today my trees becouse the smog. Could you give advice for any right app? Thanks

AQI

Do a search on play store, it gives real time readings for various sites round thailand

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5 hours ago, webfact said:

People are advised to avoid outdoor activities. If they need to go out, they should wear a mask as a precaution. The N95 standard is required to filter PM2.5 particulates.

Naturally, the authorities getting off their collective a__es and banning burning outright is too much to expect.

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BANGKOK 23 May 2018 14:08
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