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WinnieTheKhwai
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Posts posted by WinnieTheKhwai
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How long does it take.. if you sell at 250,000: pretty quick. If you sell at 500,000: forever.
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On 4/15/2018 at 3:01 PM, Cheesekraft said:
Pm 2.5 over 200 during songkran...
US AQI over 200 for several hours during Songkran.
(Not the PM2.5 value: the maximum hourly reading was 175 for Mae Rim, corresponding to an hourly AQI value of 225.)
Daily average AQI during Songkran was 160 (13 April), 168 (14 April), 166 (15 April).
So that's quite bad.
It's improving again though, for today I think we'll end up around 150 AQI
BTW, this is an extremely interesting analysis of the initial improvement and then worsening towards Songkran the past days: http://chiangmaiair.org/analysis-april2018event.html
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LOL.. This is a great one for the Silly Questions Facebook group.. EVERYWHERE will cool you down during Songkran; that's one of the things that makes it so great, with a cool beverage and frequent splashing you're more likely to get cold than hot.
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I don't know the source, but I do know that Nan isn't great for forests. (Same as Chiang Rai actually in most places).
It's pretty clear to see from above, too:
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Still closed. I don't understand it either.
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17 hours ago, Ruffian Dick said:
When I ride my bike across town, it's very obvious that there's little to no regulation of auto (or songthaew or tuk-tuk or motocy' for that matter) emissions. Thailand's auto emissions are enough to account for Chiang Mai's smog, especially when you take the area's topography into account.
Then look at the charcoal fires that are lit on every street corner to cook moo ping and Thailand's beloved street food. You're choking on it.
No.
Hint 1: if it's all the cars then surely a place with minimal traffic would be much better right? (Wrong.)
Hint 2: if it's all the cars then surely it would be just as bad or worse on work days during the school season right? (Wrong.)
Note that I'm not saying that therefore hill tribe people are to blame, just that forest fires and agricultural fires are the cause.
BTW, noticed that today is relatively better? Big drop in fires in the region in the last 48 hours:
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3 hours ago, LolaS said:
here are your facts
LOL.
"Here are your facts", without indicating a source of the image, or what is being shown. What period for example, and how does it change over time.
I like the look of it though, what is the source?
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On 3/27/2018 at 8:15 PM, LolaS said:what a ridiculous observation that farmers and hunters in Thailand are responsible for pollution. Nowhere near the truth. No data or any scientific evidence that link pollution in chiang mai to those activities.
While correlation does not mean causation, you can see that a reduction in local fires does seem to have a positive effect. I don't think the air will be pristine if all fires in Thailand stop, but it will make a more positive change than we've seen over the past 20 years.
On 3/29/2018 at 2:33 PM, TallGuyJohninBKK said:Someone was claiming in one of these threads, the other day, and the government has banned local fire setting and thus the local burning wasn't a problem anymore, or the cause of the current smog epidemic. And to that I would say, as the above news report clearly shows, HOGWASH!!!
I think the ban works relatively better for flat farmland areas and less well for forest. (Where fires may even occur naturally, as well as intentionally started). It's good having a ban though, and get better at policing it as well as fighting any fires that occur. Fires are down slightly over the last couple of years.
On 3/29/2018 at 3:36 PM, bubba said:I posted this in another thread, but....
Chiang Mai presently has the worst air quality of all major cities in the world at 181, even eclipsing Delhi which is presently 169.
No. That list is not what you think it is.
On 3/29/2018 at 4:33 PM, TallGuyJohninBKK said:We're No. 1! We're No. 1! Yaaaa!!!!!
Right up there with many of the garden spots of the world....
I believe the app indicates, they only do readings for cities over 250,000 population or so.
No. You'll notice how there is a nice variation of countries in that list. That is the goal, to show their global reach. It's not a ranking of worst places; it's a bit misleading actually. Also it uses the latest values, not 24 hour averages; again they do this to make an engaging display where things change throughout the day. It just isn't a ranking of worst places in the world. If it was then you'd only see Chinese and Indian cities in there. (Of which there are many, most of them over 250,000 or even over 2.5 million, yet they're manually kept out of the list.
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15 hours ago, Sparkles said:
Your theory is flawed.Say a bike is left outside KSK and you attempt to take it but its left there as the person is inside shopping,I guess that could happen or the app would tell you .You cant draw a comparison with cars. Rent a car you take it back to a designated place, airport or agency and sign off with a full tank,you dont just leave it anyhwere ,totally different scenario which I thought would be obvious.Have rented many cars, one way, always told where to drop off
Car rental companies are also experimenting with a similar model, where an app will tell you where a rental car is available. Also unlocks with the app, and then you can drive it anywhere in town.
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13 hours ago, TallGuyJohninBKK said:
30 microns compared to what levels in the rest of the house, or ambient air outside???
60 or so. It cuts it in half it seems, filtering out about 50%.
This morning with only 3M filters on the bedroom aircon it was around 45, and around 90 outside. (My PM2.5 counter is likely not very accurate for the absolute value but it works well enough to see what is or isn't working to improve the air.)
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On 3/13/2018 at 8:39 AM, iainiain101 said:The 2.5 level has dropped significantly this week. How much of that drop is down to nearly every Thai school being on holiday? That must reduce car journeys by at least 40,000 daily in Chiang Mai.
Does a drop in the AQI level coincide with school holidays historically?
Almost no correlation whatsoever. The issue is fires in the wider region, not cars. If it was cars then you'd have really good air in Pai, or Fang, or other small towns with few cars. Yet the levels are higher there.
And don't worry, there will be some truly bad days coming up this month, with schools still closed.
On 3/13/2018 at 9:01 AM, iainiain101 said:But even back in November PM 2.5 levels were frequently over 100.
No they weren't. Individual readings after converting to the US AQI scale can definitely be around 100 in November.
But the average PM2.5 level for November was 18 ug/m3, which is 63 on the US AQI scale. (That's an average, so individual readings of 100 are expected, as are readings that are a lot lower)
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9 hours ago, TallGuyJohninBKK said:
How many square meters is the room that you're filtering with the two different air purifier units (one designed for 33m2 and the other 23m2?
Less, probably. It's a regular sized bedroom in a house, with attached bathroom that has a door with vents in it. And a bunch of windows all around. It may be around 20 square meters or so.
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On 3/13/2018 at 7:42 AM, ramrod711 said:The bikes do look sturdy. The problem is the people renting them. People who can't be bothered to return them to a return point, but instead leave them in the middle of the sidewalk. The same kind of people that can't be bothered to walk 3 meters to a trash can and dispense of their rubbish on the ground.
You don't need to return them to a return point, that's the beauty and convenience of it. You just look at the app to find one.
16 minutes ago, Trujillo said:The reason for the round-up of the bikes in the China photos is that people leave them in places which block pathways, parking and views.
Welcome the Chinese invasion of bikes now. Jesus....
Wait.. cars trucks and motorcycles all over the place, on every street and soi and that's not an issue, but a couple bicycles here and there are? Are you complaining just for the heck of it or haven't you thought this one through? :)
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30 minutes ago, TallGuyJohninBKK said:
I should have suggested this earlier, but will add it now.
For anyone with a PM2.5 sensor and an air purifier, one way to focus on the output of the purifier -- and minimize external factors like the outside air quality and air-tightness of your living space -- is to take the sensor and place it right up against the clean air output of your purifier. And hold the sensor there to take a reading(s).
That ought to provide a pretty clear picture of just what kind of output the purifier itself is producing.
Yes, or move it to a really small room; holding it exactly where the air blows out I'm not sure if I'm screwing things up by having air that moves to fast through the sensor.
As for the results... just an air conditioner with 3M material on it I can expect something like 30-35 ug/m3 PM2.5 for my bedroom. (without any sealing of anything done, two big closed windows.) If I put a Toshiba air purifier in the same room then it's single digits quickly with a unit designed for 33m2 rooms, and taking a longer time for around 15 ug/m3 readings for a unit for a 23m2 room. (Although if I put the smaller capacity unit on maximum then it too gets the concentration down to single digits.)
Right now isn't a great time to do tests though because the outside air is a bit too good. We urgently need a bad spell. :)
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On 3/9/2018 at 10:51 PM, mat999 said:
Chiang Mai was far worse than any Chinese city the other day according to Citylife
Yeah, they were wrong. Their reporting is really not very good on this topic.
But it was a relatively less bad day in those Chinese cities that are on that list. Which doesn't mean that Chiang Mai gets anywhere close to those places in China and India using any kind of period to compare. So quite misleading overall. (Actually there were other areas in Thailand that were worse on that day.)
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Quotethe public were calling for a rethink of the whole issue.
The word 'rethink' implies that some thinking happened prior.
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It's a really popular topic, this. :)
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Oh no! This will totally change the fun nature of Pattaya and many other places in Thailand.
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3 hours ago, balo said:
You should all evacuate CM and head south to the coast . Think about your health, you only live once.
How about you..? So far in February Chiang Mai has
remained better thanbeen about the same as Bangkok. (And Pattaya wasn't great either.) -
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3 hours ago, Radar501 said:Very disappointing. Just as a soi dog wees on a lamp post to mark its territory.
Worse.
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On 2/22/2018 at 8:06 AM, ezzra said:I'd be happier if those touchy feely gestures would come from a good looking female
as oppose to man....
If it does then she wants you to bone her. No exceptions, any female touching a male in any way, any place, any brief duration of time: hammer time.
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Honest opinion: I don't think you need to go overboard with very expensive imported air purifiers. All you're trying to do is get roughly into the green zone by the US AQI scale, and almost any air purifier will get you there. (Even 3M filters on your existing air conditioners may get you there, but a dedicated air purifier definitely works better)
Also get a basic PM2.5 counter, they're 2500 Baht or so. Because that will let you know that you've done enough, or that you need to run it on a higher setting, check on any air from outside coming in, etc. In a closed bedroom this isn't too difficult to get to very healthy levels, but in a bigger and more open living room it may take some additional effort.
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4 hours ago, mikey88 said:
The long term effects of the PM 2.5 exposure is what I’m personally concerned with.
My Thai partner was using a mask that was useless for 2.5 ....didn’t know.
The Aqicn.org site has an article linked on different models. It's probably not useless though, even plain surgical masks help somewhat. Also.. don't go overboard with getting the strongest filtering kind because they can be difficult to breathe through, which then leads to not using them.
3 hours ago, kenk24 said:I am in Cm now and would not have even suspected there was a problem.
By local standards it's pretty okay. It could be better though, if you suddenly get a really clear day after the winds change or a rain storm then you do notice the difference. (In terms of visibility and air clarity.. I cannot comment on health impact from personal experience as I don't have symptoms even during the worst of it. That said, lower pollution levels is always better, of course.
2 hours ago, 4MyEgo said:I have always heard that CM has had a smoke issue.
The whole of Thailand has a smoke issue when people burn things. (Impact from nearby sources). The whole North and North East (and the wider region into nearby countries) has a particulate matter pollution issue part of the year at the end of the dry season. While the cause is smoke from forest fires and agricultural burning, it doesn't smell particularly smoky. (More dusty..)
Has the quality of air become that worse in the last 2-3 years?
in Chiang Mai
Posted · Edited by WinnieTheKhwai
No.
(Well.. : bigger 'issue' in terms of awareness and attention: Yes, thankfully. But has the air become worse: No.)
And also not in the last 20 years. In fact it's getting a little better, very slowly.
But looking at the last couple years, focusing on January-April mostly so that this year fits in the graph (April value is to-date) :
Or the long-term view:
So that goes back to 1996, more than 20 years.