Science a GoGo's Home Page Forums General Discussion Climate Change Forum Help plzzzzzzzz

hi people can anyone help me. Which 2 scenarios could possibly lead to no overall change in GMST in this way.

(1)The fraction of Earth's surface covered with ice and snow decreases while the albedo of the surface (which isn't covered by ice and snow) decreases.

(2) The atmospheric CO2 concentration decreases while the solar constant increases.

(3)The volcanic aerosol content in the atmosphere increases while the atmospheric H2O concentration decreases.

(4) The volcanic aerosol content in the atmosphere decreases while the atmospheric CO2 concentration increases.

(5) The albedo of the surface (which isn't covered by ice and snow) decreases while the fraction of Earth's surface covered with ice and snow increases

Oh! I get it; this is like a test question, eh?
According to "conventional wisdom...."

Numbers 2 and 5 both contain competing forcers; so those competing forcers could cancel each other, resulting in no net change within either scenario.

...and double checking....
Numbers 1, 3 & 4 each contain forcers that would reinforce each other and not cancel the other out, throwing the system even more out of balance.

So is this cheating? You should learn how these global forces affect the future. It should become as second nature for you.

Cheers!
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