This document describes two recent updates that have been made to the WITCH damage and adaptation modules. First, a new set of damage functions and of adaption cost curves embedding the more recent available knowledge have been calibrated. Second, the damage function has been modified to separate positive damages (benefits from climate change) from negative impacts. Adaptation only reduces the negative impacts while it does not contribute to enhancing positive impacts.

• European Institute on Economics and the Environment

• Economic analysis of Climate Impacts and Policy Division

Authors

• Francesco Bosello
• Enrica De Cian