Financing for adaptation is a core element in the ongoing international negotiations on climate change. This has motivated a number of recent global estimates of adaptation costs. While important from an agenda setting perspective, many of these estimates nevertheless have a number of...

This paper uses WITCH, an integrated assessment model with a game-theoretic structure, to explore the prospects for, and the stability of broad coalitions to achieve ambitious climate change mitigation action. Only coalitions including all large emitting regions are found to be technically able...