Asher Siebert is a geographer working on various topics related to climate change. In this postdoctoral appointment, he is working with an interdisciplinary team on integrated assessment models of optimal carbon tax policy. In this work, he focuses on the interaction between catastrophe, discount rate, inequality aversion and the distributions of climate damages and abatement costs and welfare optimal carbon tax policy. Prior work has focused more on Monte Carlo simulation methods of hydroclimatic extreme seasons and index insurance in the context of a changing climate. He holds a bachelor’s degree in Geosciences from Princeton, an MA in Climate and Society from Columbia and a PhD in Geography from Rutgers. Siebert is affiliated with the Climate Futures Initiative.