Articles | Volume 21, issue 14
Research article
21 Jul 2021
Research article |  | 21 Jul 2021

Effects of enhanced downwelling of NOx on Antarctic upper-stratospheric ozone in the 21st century

Ville Maliniemi, Hilde Nesse Tyssøy, Christine Smith-Johnsen, Pavle Arsenovic, and Daniel R. Marsh

Model code and software

NCAR CESM2-WACCM model output prepared for CMIP6 CMIP historical G. Danabasoglu

NCAR CESM2-WACCM model output prepared for CMIP6 ScenarioMIP G. Danabasoglu

Short summary
We simulate ozone variability over the 21st century with different greenhouse gas scenarios. Our results highlight a novel mechanism of additional reactive nitrogen species descending to the Antarctic stratosphere from the thermosphere/upper mesosphere due to the accelerated residual circulation under climate change. This excess descending NOx can potentially prevent a super recovery of ozone in the Antarctic upper stratosphere.
Final-revised paper