TerraplaneGuy 102 Posted April 17, 2020 Share Posted April 17, 2020 19 hours ago, DaveInSukhumvit said: The wind direction and speed for yesterday and today is virtually the same. Pollution levels all over BKK were significantly higher yesterday than today. A pollution hot spot is shown in red near the Phra Nakhon Tai Power Plant. I think that plant was the difference in air quality. Otherwise, the wind off the ocean was pretty good for both days with little evidence of transboundary pollution. I did read up on combined cycle power plants, and this plant in particular. Phra Nakhon Tha (AKA South BKK Power Plant) is a dual fuel design burning natural gas and diesel. Either fuel can be a large contributor to PM2.5 (the dominant factor in yesterday's high readings). I think they brought more generators online yesterday because other sources of power were offline ... or perhaps switched fuel sources one day to the next ... or a combination. I don't think it was a bad meter in that location. I have 2 meters. Both read significantly higher yesterday than today. Also Air Visual numbers (shown above) are not perfect, but do generally represent fair readings in the areas shown. My meters confirm those readings and the government stations. *Not a professional. Multiple heads are better than one. It was definitely a bad day on Tuesday, according to my monitor on Sathorn near BTS Chong Nonsi. Link to post Share on other sites
DaveInSukhumvit 23 Posted April 25, 2020 Share Posted April 25, 2020 Another "special day" today leaving us to wonder why all the air pollution in BKK. AFIK, it is all "self created" likely from factories starting up and burning. (#MyTheory) Air flow is shows that outside of BKK - on all sides - air is good. Sad that we do this. 1 Link to post Share on other sites
JimShorts 86 Posted April 27, 2020 Share Posted April 27, 2020 On 4/25/2020 at 9:36 AM, DaveInSukhumvit said: Another "special day" today leaving us to wonder why all the air pollution in BKK. AFIK, it is all "self created" likely from factories starting up and burning. (#MyTheory) Air flow is shows that outside of BKK - on all sides - air is good. Sad that we do this. Yes I noticed too, very interesting. Would really like to know the source. Especially considering there are much less autos on the streets. Some of it could be construction related? Link to post Share on other sites
thedemon 1,646 Posted April 28, 2020 Share Posted April 28, 2020 According to weather maps the wind direction is from the north and north-east now which usually means more haze. But it's a beautiful clear day today. Strange. Both the temperature and humidity are a little bit lower this morning. That seems to be a factor. Maybe. Link to post Share on other sites
MaxYakov 2,883 Posted April 28, 2020 Share Posted April 28, 2020 (edited) 1 hour ago, thedemon said: According to weather maps the wind direction is from the north and north-east now which usually means more haze. But it's a beautiful clear day today. Strange. Both the temperature and humidity are a little bit lower this morning. That seems to be a factor. Maybe. Cannot rely on the weather maps. Best current wind and rain info is taken personally, outside IMHO. Edited April 28, 2020 by MaxYakov 1 Link to post Share on other sites
jojothai 523 Posted April 29, 2020 Share Posted April 29, 2020 This can be moved into the pollution thread. Its been very good for a while, as one may expect with reduced activity. But this morning is a different story AQI 140-170. I thought the lockdown was extended yesterday. Did i miss something? 1 Link to post Share on other sites
DaveInSukhumvit 23 Posted April 29, 2020 Share Posted April 29, 2020 (edited) redundant Edited April 29, 2020 by DaveInSukhumvit redundant Link to post Share on other sites
DaveInSukhumvit 23 Posted April 29, 2020 Share Posted April 29, 2020 (edited) On 4/28/2020 at 8:31 AM, MaxYakov said: Cannot rely on the weather maps. Best current wind and rain info is taken personally, outside IMHO. Thanks Max. This is the second comment I have seen questioning wind direction and it caused me to learn something new. I turns out that the Ventusky wind map last update was 12PM UTC (or 1AM BKK time). I think they only update 4x/day. This could make the readings off a little or a lot depending on wind changes. I think Ventusky and AirVisual (pollution map) use similar models b/c they usually show same airflow patterns. Edited April 29, 2020 by DaveInSukhumvit Link to post Share on other sites
Jimbo2014 2,876 Posted April 29, 2020 Share Posted April 29, 2020 (edited) You havnt missed a thing and I thank you for posting this. It boggles the mind that this government, in a complete lockdown, is incapable of controlling the pollution. This can only mean there is rampant burning taking place around Bangkok. Cant anyone enforce anything other than an alcohol ban in this country? Pollution has been shown to aid the spread of Covid and also cause major long term damage to the lungs and other organs exceeding Covid yet no-one seems to care. The government is trying to promote outdoor cafes to limit the spread then kills people with the poor quality of the air. The ship is sinking faster and all the lifeboats are almost gone. Edited April 29, 2020 by Jimbo2014 1 2 Link to post Share on other sites
JimShorts 86 Posted April 29, 2020 Share Posted April 29, 2020 Again today with the air pollution being high. This morning almost 160 reading on Airvisual. It is very odd (as noted) with so much less traffic and no burning (as can be seen from the Nasa Fire watch). It must be industrial and/or construction. It seems to mostly be coming from the areas west of Bangkok. I don't personally know much about those areas and if they have a lot of industry and/or construction. I would assume most the construction is in Bangkok. Link to post Share on other sites
JimShorts 86 Posted April 29, 2020 Share Posted April 29, 2020 Harvard published a study on the link between air pollution (PM2.5) and Covid-19. The results are pretty crazy. Results: We found that an increase of only 1 μg/m3 in PM2.5 is associated with an 8% increase in the COVID-19 death rate (95% confidence interval [CI]: 2%, 15%). The results were statistically significant and robust to secondary and sensitivity analyses. Data sources: COVID-19 death counts were collected for more than 3,000 counties in the United States (representing 98% of the population) up to April 22, 2020 from Johns Hopkins University, Center for Systems Science and Engineering Coronavirus Resource Center. Study Source: https://projects.iq.harvard.edu/covid-pm/home Link to post Share on other sites
jojothai 523 Posted April 29, 2020 Share Posted April 29, 2020 Agree, Crazy that they dont do anything much to curb the burning etc. I dont see traffic that much reduced as expected. Rush hour obviously much less, but there still seems to be plenty on the roads during the day. Ratchadapisek, rama 4, sukhumvit nearby. So there still seems to be plenty of activity. I see we have some rain now. That was predicted yesterday. Lets hope it helps to clear up some of this. 1 Link to post Share on other sites
Misty 486 Posted April 29, 2020 Share Posted April 29, 2020 1 hour ago, JimShorts said: Again today with the air pollution being high. This morning almost 160 reading on Airvisual. It is very odd (as noted) with so much less traffic and no burning (as can be seen from the Nasa Fire watch). It must be industrial and/or construction. It seems to mostly be coming from the areas west of Bangkok. I don't personally know much about those areas and if they have a lot of industry and/or construction. I would assume most the construction is in Bangkok. In Asoke-Thonglor area of Bangkok, it is high now and was high last night too. Industrial or construction makes sense, although not that much visible construction going on in this area, and certainly nothing new or unusual in the last day or so. Plastic garbage burning? See "Plastic use soars after dine-in ban" 9 Apr from the source that cannot be named or linked to. Link to post Share on other sites
Popular Post DaveInSukhumvit 23 Posted April 29, 2020 Popular Post Share Posted April 29, 2020 I know one source of pollution right now. Onnut Garbage dump is burning. Sorry about those to the West 1 2 Link to post Share on other sites
DaveInSukhumvit 23 Posted June 7, 2020 Share Posted June 7, 2020 Onnut Dump wishing residents to the West a good morning Link to post Share on other sites
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