I used to have a theory that you could tell where a fantasy author lived from the shape of their map. e.g. Maurice Gee's _The Halfmen of O_ --- good book, BTW --- has got the warm ocean to the north, with the snowy mountains to the south. He's a New Zealander.

Unfortunately, authors are way too aware of this now. I'm currently reading Jane Lindskold's Firekeeper quintet --- also really good --- and they're set on the west coast of a continent, called the New World, which was settled a couple of centuries ago by civilisations from across the sea to the East. She's American.

> but have you ever a fantasy writer who put people on the Southern hemisphere of their planet and made the North warm?

The Dragon Age series of games (and books).