Using a climate sensitivity of 0.5K per watt per square meter, estimate how much of the .9 c global temperature increase since 1900 could be due to solar forcing who value is the range of .06 to .24 w/m2
The Attempt at a Solution
I am not sure how to start this problem. I know the solar constant is 239 w/m^2 but don't know what to do with the rest.
I need help getting started