I second the Barbara Kingsolver recommendation - sometimes she does a good job of putting plausible people in scenarios where you have to get beyond the rhetoric.
If the books are speculative adaptation (no research into or
experience regarding actual human adaptations to the climate in question), or they are of the preachy not-fun oversimplified eco-rant rhetoric, it would be kind of a wash-out.
But I'll read anything once. (At least until it makes me feel icky.)
Might see if the author has a forum or thread in mind to
answer questions - did she spend time in the Arctic, or the Middle East, where she might be able to answer questions about the 'real stories' behind the fictional ones?
Or do we have a forum about cultural adaptation?
-Erica