Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.668 IF 5.668
  • IF 5-year value: 6.201 IF 5-year
    6.201
  • CiteScore value: 6.13 CiteScore
    6.13
  • SNIP value: 1.633 SNIP 1.633
  • IPP value: 5.91 IPP 5.91
  • SJR value: 2.938 SJR 2.938
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 174 Scimago H
    index 174
  • h5-index value: 87 h5-index 87
Discussion papers
https://doi.org/10.5194/acp-2016-758
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-2016-758
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Submitted as: research article 29 Sep 2016

Submitted as: research article | 29 Sep 2016

Review status
This discussion paper is a preprint. It has been under review for the journal Atmospheric Chemistry and Physics (ACP). A final paper in ACP is not foreseen.

Nighttime Mesospheric Ozone During the 2002 Southern Hemispheric Major Stratospheric Warming

Christine Smith-Johnsen1, Yvan Orsolini2,3, Frode Stordal1, Varavut Limpasuvan4, and Kristell Pérot5 Christine Smith-Johnsen et al.
  • 1Department of Geosciences, University of Oslo, Norway
  • 2Birkeland Centre for Space Science, University of Bergen, Norway
  • 3Norwegian Institute for Air Research, Kjeller, Norway
  • 4Coastal Carolina University, Conway, SC, USA
  • 5Department of Earth and Space Sciences, Chalmers University of Technology, Gothenburg, Sweden

Abstract. A Sudden Stratospheric Warming (SSW) affects the chemistry and dynamics of the middle atmosphere. The major warmings occur roughly every second year in the Northern Hemispheric (NH) winter, but has only been observed once in the Southern Hemisphere (SH), during the Antarctic winter of 2002. Using the National Center for Atmospheric Research's (NCAR) Whole Atmosphere Community Climate Model with specified dynamics (WACCM-SD), this study investigates the effects of this rare warming event on the ozone layer located around the SH mesopause. This secondary ozone layer changes with respect to hydrogen, oxygen, temperature, and the altered SH polar circulation during the major SSW. The 2002 SH winter was characterized by three zonal-mean zonal wind reductions in the upper stratosphere before a fourth wind reversal reaches the lower stratosphere, marking the onset of the major SSW. At the time of these four wind reversals, a corresponding episodic increase can be seen in the modeled nighttime ozone concentration in the secondary ozone layer. Observations by the Global Ozone Monitoring by Occultation of Stars (GOMOS, an instrument on board the satellite Envisat) demonstrate similar ozone enhancement as in the model. This ozone increase is attributable largely to enhanced upwelling and the associated cooling of the altitude region in conjunction with the wind reversal. Unlike its NH counterpart, the secondary ozone layer during the SH major SSW appeared to be impacted more by the effects of atomic oxygen than hydrogen.

Christine Smith-Johnsen et al.
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Christine Smith-Johnsen et al.
Christine Smith-Johnsen et al.
Viewed  
Total article views: 531 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
378 105 48 531 31 43
  • HTML: 378
  • PDF: 105
  • XML: 48
  • Total: 531
  • BibTeX: 31
  • EndNote: 43
Views and downloads (calculated since 29 Sep 2016)
Cumulative views and downloads (calculated since 29 Sep 2016)
Viewed (geographical distribution)  
Total article views: 533 (including HTML, PDF, and XML) Thereof 531 with geography defined and 2 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 14 Oct 2019
Publications Copernicus
Download
Short summary
Mesospheric ozone enhancements during sudden stratospheric warmings in the northern hemisphere have been reported in the literature. In the southern hemisphere, only one warming event has occurred, and this paper is the first to explain the mesospheric ozone enhancement during this event in 2002, using both a whole atmosphere chemistry climate model and satellite observations from GOMOS.
Mesospheric ozone enhancements during sudden stratospheric warmings in the northern hemisphere...
Citation