NASA has reported falling temperatures in the upper atmosphere since 30 years ago:

https://www.nasa.gov/general/nasa-satellites-see-upper-atmosphere-cooling-and-contracting-due-to-climate-change/ 

 

This cooling effect has been attributed by Yale University to "greenhouse gasses" in the lower atmosphere reflecting back to Earth the warmth generated at ground level by the Sun.

Astrophysicists report diminishing radiation is reaching our Earth from the Sun, and this is expected to accentuate over the coming decades.  Although some academics seem reluctant to admit that the Sun is our primary source of warmth.

 

Rising ocean temperatures cause expulsion of dissolved CO2.  So higher atmospheric CO2 can be, at least in part, an effect rather than a cause of global warming; assuming it is currently occurring.
Huge releases of methane from Actic Ocean waters have recently occurred, far in excess of global cow-farts; attributed to rising sea-water temperatures.  Atmospheric methane traps heat radiation to a much greater extent than CO2.
So the equation of what causes what is complicated.

 

Climate changes of all kinds are, and have always been, a feature of our Earth, in some cases causing near extinction of human kind, a relatively adaptable mammalian species.

Plants grow more vigorously with rising temperatures, on condition that CO2 levels also rise (according to greenhouse-growers).  Dependent upon species, plants are said to benefit from levels of up to 700 to as much as 1,800 parts per million.  Current CO2 levels are about 400 ppm.

 

Human society can more easily survive in a warm climate with a decent growing season, rather than a cold one with limited poential for growing crops.  So if global temperatures are (in many regions) rising, some increase in CO2 may be beneficial.

 

If, on the other hand, the climate is cooling, a slightly thicker blanket of CO2, a natural part of our environment for millions of years, and without which life on Earth in its present forms could not continue, might prove a boon.

 

Carbon dioxide is not a pollutant; unlike the tens of thousands of new synthetic chemicals pushed into our environment each year without any testing as to toxicity.

Trace amounts of CO2 in the blood assist oxygen uptake by haemoglobin. Certainly better than the toxic fly-ash spread across the skies of some parts of the world.  A feature I saw regularly in the evenings when living in the foothills of the Pyrenees.
Three aircraft in line at high altitude, criss-crossing the sky, trailing white powder resembling water-vapour.  Except the trails did not dissipate, but spread out, glowing red in the setting sun, joining together and covering the previously cloudless sky with a veil.

I guess it makes a difference in one's ability to believe the "chemtrails conspiracy" when one has seen this sort of thing first hand.  Repeatedly.  Even photographed it, although am not sure if I still have the photos archived away somewhere.
Have never seen the phenomenon in Thailand.

It would be advisable to do a course (online if necessary) on atmospheric physics.

 

There is also the issue of sea water, so a course on sea water (fluid) dynamics can be informative.