Tropospheric jet response to Antarctic ozone depletion: An update with Chemistry-Climate Model Initiative (CCMI) models. (9th May 2018)

• Record Type: Journal Article
• Authors: Son, Seok-Woo; Han, Bo-Reum; Garfinkel, Chaim I; Kim, Seo-Yeon; Park, Rokjin; Abraham, N Luke; Akiyoshi, Hideharu; Archibald, Alexander T; Butchart, N; Chipperfield, Martyn P; Dameris, Martin; Deushi, Makoto; Dhomse, Sandip S; Hardiman, Steven C; Jöckel, Patrick; Kinnison, Douglas; Michou, Martine; Morgenstern, Olaf; O'Connor, Fiona M; Oman, Luke D; Plummer, David A; Pozzer, Andrea; Revell, Laura E; Rozanov, Eugene; Stenke, Andrea; Stone, Kane; Tilmes, Simone; Yamashita, Yousuke; Zeng, Guang
• Is Part Of: Environmental research letters. Volume 13:Number 5(2018:May)
• Publication Date: 2018-05-09
• Subjects: ozone depletion -- Southern Hemisphere jet trends -- chemistry-climate model initiative (CCMI); Environmental sciences -- Periodicals; Human ecology -- Research -- Periodicals; Environmental health -- Periodicals; 333.7
• DOI: 10.1088/1748-9326/aabf21
• Languages: English
• ISSNs: 1748-9326

Abstract

Abstract: The Southern Hemisphere (SH) zonal-mean circulation change in response to Antarctic ozone depletion is re-visited by examining a set of the latest model simulations archived for the Chemistry-Climate Model Initiative (CCMI) project. All models reasonably well reproduce Antarctic ozone depletion in the late 20th century. The related SH-summer circulation changes, such as a poleward intensification of westerly jet and a poleward expansion of the Hadley cell, are also well captured. All experiments exhibit quantitatively the same multi-model mean trend, irrespective of whether the ocean is coupled or prescribed. Results are also quantitatively similar to those derived from the Coupled Model Intercomparison Project phase 5 (CMIP5) high-top model simulations in which the stratospheric ozone is mostly prescribed with monthly- and zonally-averaged values. These results suggest that the ozone-hole-induced SH-summer circulation changes are robust across the models irrespective of the specific chemistry-atmosphere-ocean coupling.