Valuing the Global Mortality Consequences of Climate Change Accounting for Adaptation Costs and Benefits
115 Pages Posted: 1 Aug 2018 Last revised: 2 Aug 2018
Date Written: August 1, 2018
Using subnational data from 41 countries, we develop an empirical model of the mortality-temperature relationship that allows us to estimate effects where no mortality data exist and to account for the benefits of adaptation to climate. Importantly, we develop a revealed preference approach that bounds adaptation costs, even though they cannot be directly observed. Using future climate simulations, we compute a median willingness-to-pay of $20 (moderate emissions scenario) to $39 (high emissions scenario) to avoid the excess mortality risk caused by a 1t increase in CO2 emissions (2015 USD, 3% discount rate). Allocating these costs to 24,378 political units, we find substantial heterogeneity.
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