The details matter...Is Global Warming a Social Construction?

In the thread below this question, a thoughtful and intelligent jelly suggested that race and gender are social contructions.

And here, I always thought they were metaphysical.

But that got me to thinking. Are other things, that might be considered as metaphysical, actually social constructions?

Is Global Warming a social construction? Are the standards to prove that it exists different than the standards that might lead one to reasonably conclude that there are, in fact, different genders, and different races?