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Yom

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Posts posted by Yom

  1. 4 hours ago, spidermike007 said:

    The burning has to stop.

     

    Absolutely OK,  spidermike007.

    Thanks for the post. - I agree completely.

    We all know, burning is ONE of MANY causes for

    particulate matter in the air. - But what you're

    suggesting would be even for him a difficult task:

    image.png.aac46663490f9d01561d7bd0e38c3472.png

    [Roman marble statue on the basis of an original by Lysippos, 216 CE.]

    There is no perspective? 

    OK, sometimes it's the farmers.

    But the other 75% ?

                         ***************

     

  2. December 30   -   19:00

    (Today 3:00, 11:00, 13:00 on page 30)

    Now less yellow, more red. - AQI 490 is real.

    image.png.31ed3201142998a3b9a109adf3173745.png

     

    image.png.41e24851e978ed1f852053033f508042.png

     

    numbers:  current AQI 490 - highest/lowest  AQ 598 / 33 

                              ***************

  3. 5 hours ago, VocalNeal said:

    What standard do you use for your basis of good or bad? 

     

    Thanks for your question, Mr. VocalNeal.

    Is there any standard anywhere for good and bad?

    You are  referring to this picture?

    image.png.956b5214c12d5cae53688939539ba99e.png

    There are so many sophisticated sensors these days all over the world

    and so many different models to calculate, to represent, that you must

    decide for yourself, what to accept, what to trust, what's good, what's bad.

    'bad'

    Under the given circumstances (what is feasible in TH?)

    50 to 60 ug/m3 PM2.5 or AQI 137 to AQI 153 is bad till very bad.

    Everything above I usually call crazy.

    Even if you usually can't see or smell the air pollution.

     

    There are different limits all over the world. I would prefer US standards, 

    better than EU or Thailand, while China seems to be the bad boy.

     

    Please have a look at the decreasing ug/m3–PM2.5-numbers over

    19 years in the US. -  Thailand will never reach this goal.

    At least not in my lifetime.

     

    image.png.a17b943c45c400a75f1073b792dbfd51.png

    https://www.epa.gov/air-trends/particulate-matter-pm25-trends

    To add:  US 'National Sstandard'  ~ 12ug/m3   that means an   AQI  50.

    People often confuse the names/units.

                                        *****************

     

     

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