Comment Re:Wait a goddamn minute here (Score 2) 421
I know science is hard, but let's go over it like you're five.
Global warming is largely considered to be caused by something called greenhouse gases. The most prominent one is CO2, which is generated by burning fossil fuels among other things. Earth is by and large heated by the sun's rays going through the atmosphere and hitting the Earth, heating the air and ground. A part of those rays, however, gets bounced off the surface or re-emitted. Those rays can then leave the atmosphere, not heating up the Earth. Greenhouse gases act as a sort of shield around the atmosphere, reflecting those rays back again towards the Earth over and over.
Aerosols act as an additional barrier beyond the greenhouse gases which have the opposite effect: they bounce the sun's ray off the atmosphere before they can even get in, thus reducing the total amount of heat getting in the atmosphere in the first place and thus reducing the impact of greenhouse gases.
TL;DR Human CO2 increases greenhouse effect, but that still requires heat to get in in the first place.
Global warming is largely considered to be caused by something called greenhouse gases. The most prominent one is CO2, which is generated by burning fossil fuels among other things. Earth is by and large heated by the sun's rays going through the atmosphere and hitting the Earth, heating the air and ground. A part of those rays, however, gets bounced off the surface or re-emitted. Those rays can then leave the atmosphere, not heating up the Earth. Greenhouse gases act as a sort of shield around the atmosphere, reflecting those rays back again towards the Earth over and over.
Aerosols act as an additional barrier beyond the greenhouse gases which have the opposite effect: they bounce the sun's ray off the atmosphere before they can even get in, thus reducing the total amount of heat getting in the atmosphere in the first place and thus reducing the impact of greenhouse gases.
TL;DR Human CO2 increases greenhouse effect, but that still requires heat to get in in the first place.