OK. All you warmers and luke warmers can go back to business as usual. I won my $20 and thank you for your predictable behavior. The bet among some of the folks at my place of employment was that once posed the question two types of people would emerge...first, those who don't have a clue who would beging calling names, and second, those who believed themselves to be among the smartest people in the room would start to weasel around trying to either invalidate the question in which equatorial rainforests and equitorial deserts were obviously implied or would start asking mucho questions in the attempt to look smart while ignoring that the question obviously was directed towards equitorial regions while looking for some way to answer the question within something that resembled the framework stated in the OP.
The one type of person who would not show up was to be the sort who would explain within the framework of the GHE/AGW hypothesis why deserts are hotter than rain forests.
Now there is a $10 bonus in it for me if one of you goofs would now attempt to argue that the OP didn't obviously imply equitorial rain forests and deserts.