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Discussion papers
https://doi.org/10.5194/acp-2018-1031
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2018-1031
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 23 Oct 2018

Research article | 23 Oct 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).

Influence of Arctic Stratospheric Ozone on Surface Climate in CCMI models

Ohad Harari1, Chaim I. Garfinkel1, Olaf Morgenstern2, Guang Zeng2, Simone Tilmes3, Douglas Kinnison3, Makoto Deushi4, Patrick Jöckel5, Andrea Pozzer5, and Fiona M. O'Connor6 Ohad Harari et al.
  • 1The Fredy and Nadine Herrmann Institute of Earth Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
  • 2National Institute of Water and Atmospheric Research, Wellington, New Zealand
  • 3National Center for Atmospheric Research, Boulder, Colorado, USA
  • 4Meteorological Research Institute, Tsukuba, Japan
  • 5Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany
  • 6Met Office Hadley Centre, Exeter, UK

Abstract. The Northern Hemisphere and tropical circulation response to interannual variability in Arctic stratospheric ozone is analyzed in a set of the latest model simulations archived for the Chemistry-Climate Model Initiative (CCMI) project. All models simulate a connection between ozone variability and temperature/geopotential height in the lower stratosphere similar to that observed. A connection between Arctic ozone variability and polar cap sea-level pressure is also found, but additional analysis suggests that it is mediated by the dynamical variability that typically drives the anomalous ozone concentrations. The CCMI models also show a connection between Arctic stratospheric ozone and the El Nino Southern Oscillation (ENSO): the CCMI models show a tendency of Arctic stratospheric ozone variability to lead ENSO variability one to two years later. While this effect is much weaker than that observed, it is still statistically significant. Overall, Arctic stratospheric ozone is related to lower stratospheric variability and may also influence the surface in both polar and tropical latitudes, though these impacts can be masked by internal variability if data is only available for ~40 years.

Ohad Harari et al.
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Short summary
Ozone depletion in the Antarctic has been shown to influence surface conditions, but the effects of ozone depletion in the Arctic on surface climate is unclear. We show that Arctic ozone does influence surface climate in both polar regions and tropical regions, though the proximate cause of these surface impacts are not yet clear.
Ozone depletion in the Antarctic has been shown to influence surface conditions, but the effects...
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