Articles | Volume 17, issue 19
Research article
09 Oct 2017
Research article |  | 09 Oct 2017

Impacts of stratospheric sulfate geoengineering on tropospheric ozone

Lili Xia, Peer J. Nowack, Simone Tilmes, and Alan Robock

Data sets

The monthly atmospheric output from RCP6.0, G4SSA, and G4SSA-S NCAR Earth System Grid

Short summary
Ozone is a key air pollutant. We model two geoengineering schemes, stratospheric sulfur injection and solar irradiance reduction, to compare their impacts on atmospheric ozone concentrations. With the nearly identical global mean surface temperature reduction, solar dimming increases global average surface ozone concentration, while sulfate injection decreases it. This difference is due to different stratosphere–troposphere exchange of ozone and tropospheric ozone chemistry in the two scenarios.
Final-revised paper