Stratospheric ozone intrusion events and their impacts on tropospheric ozone in the Southern Hemisphere

Greenslade, Jesse W.; Alexander, Simon P.; Schofield, Robyn; Fisher, Jenny A.; Klekociuk, Andrew K.

doi:https://doi.org/10.5194/acp-17-10269-2017

Articles | Volume 17, issue 17

https://doi.org/10.5194/acp-17-10269-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-17-10269-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 17

Research article

|

01 Sep 2017

Research article |

| 01 Sep 2017

Stratospheric ozone intrusion events and their impacts on tropospheric ozone in the Southern Hemisphere

Jesse W. Greenslade, Simon P. Alexander, Robyn Schofield, Jenny A. Fisher, and Andrew K. Klekociuk

Supplement

https://doi.org/10.5194/acp-17-10269-2017-supplement

Data sets

ERA-Interim data ECMWF http://apps.ecmwf.int/datasets/data/interim-full-daily/levtype=pl/

GEOS-Chem model code and running instructions ACMG http://acmg.seas.harvard.edu/geos/doc/archive/man.v10-01/index.html

WOUDC ozonesonde data World Ozone and Ultraviolet Data Centre https://doi.org/10.14287/10000008

Download

Article (2314 KB)
Full-text XML

Short summary

An analysis of data from ozonesondes released at three southern oceanic sites shows the impact of stratospheric ozone in this region. Using a novel method of transport classification, this work estimates the seasonality and quantity of stratospherically sourced ozone. We find that ozone is transported most frequently in summer due to regional-scale low-pressure weather systems. We also estimate a stratospheric ozone source of 2.0–3.3 Tg/year over three Southern Ocean regions.