The Social Cost of Ozone-Related Mortality Impacts From Methane Emissions.

ABSTRACT: Atmospheric methane directly affects surface temperatures and indirectly affects ozone, impacting human welfare, the economy, and environment. The social cost of methane (SC-CH₄) metric estimates the costs associated with an additional marginal metric ton of emissions. Current SC-CH₄ estimates do not consider the indirect impacts associated with ozone production from changes in methane. We use global model simulations and a new BenMAP webtool to estimate respiratory-related deaths associated with increases in ozone from a pulse of methane emissions in 2020. By using an approach consistent with the current SC-CH₄ framework, we monetize and discount annual damages back to present day values. We estimate that the methane-ozone mechanism is attributable to 760

SUBMITTER: McDuffie EE 

PROVIDER: S-EPMC10631284 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature