Prof. Kopp’s focuses on understanding uncertainty in past and future climate change, with major emphases on sea-level change, the interactions between physical climate change and the economy, and the use of climate risk information to inform decisionmaking. Key questions guiding his research include: (1) How has sea level changed in the geological and historical past, and how do ongoing changes compare to these past changes? (2) How may sea level change in the future in response to climate forcing? (3) How do climate and sea-level change impact the economy and human well-being? (4) How can climate and sea-level science more effectively support climate risk management under deep uncertainty?