I would check the Regional/World Mapping forum first. There are a few threads I've seen there; searching will get you more.

A couple of tectonic wizards at work:
Akubra's world.
Pixie's Planet.

And you could try plugging this into google: "climate site: cartographersguild.com" (without the quotation marks).

Enjoy the search!

cheers,
Meshon