Multimodel precipitation responses to removal of U.S. sulfur dioxide emissions.

ABSTRACT: Emissions of aerosols and their precursors are declining due to policies enacted to protect human health, yet we currently lack a full understanding of the magnitude, spatiotemporal pattern, statistical significance, and physical mechanisms of precipitation responses to aerosol reductions. We quantify the global and regional precipitation responses to U.S. SO₂ emission reductions using three fully coupled chemistry-climate models: Community Earth System Model version 1, Geophysical Fluid Dynamics Laboratory Coupled Model 3, and Goddard Institute for Space Studies ModelE2. We contrast 200 year (or longer) simulations in which anthropogenic U.S. sulfur dioxide (SO₂) emissions are set to zero with present-day control simulations to assess the aerosol, cloud, and precipit

SUBMITTER: Westervelt DM 

PROVIDER: S-EPMC7526610 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature