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Temporal development of ozone within the Arctic Vortex during the winter of 1991/92

Braathen, Geir O. ; Rummukainen, Markku LU orcid ; Kyrö, Esko ; Schmidt, Ulrich ; Dahlback, Arne ; Jørgensen, Torben S. ; Fabian, Rolf ; Rudakov, Vladimir V. ; Gil, Manuel and Borchers, Reinhardt (1994) In Geophysical Research Letters 21(13). p.1407-1410
Abstract

In this study we address the question of temporal ozone trends on isentropic surfaces within the Arctic polar vortex during EASOE. We have combined ozone sonde data from twelve campaign stations distributed throughout the European sector of the Arctic. The development of ozone at the 425, 475, 550 and 700K levels is presented, using analysed fields of isentropic potential vorticity and isentropic back‐trajectories to separate inner vortex air from air staying outside the vortex. Vertical N2O profiles measured in Kiruna have been used to obtain information on the vertical movement of the polar air mass. Elimination of effects due to diabatic descent leads to a weak, yet significant, chemically induced loss of ozone at 475 K.... (More)

In this study we address the question of temporal ozone trends on isentropic surfaces within the Arctic polar vortex during EASOE. We have combined ozone sonde data from twelve campaign stations distributed throughout the European sector of the Arctic. The development of ozone at the 425, 475, 550 and 700K levels is presented, using analysed fields of isentropic potential vorticity and isentropic back‐trajectories to separate inner vortex air from air staying outside the vortex. Vertical N2O profiles measured in Kiruna have been used to obtain information on the vertical movement of the polar air mass. Elimination of effects due to diabatic descent leads to a weak, yet significant, chemically induced loss of ozone at 475 K. At 425 K we observe a negative trend in the ozone mixing ratio, but for this level it has not been possible to assess the influence of subsidence. Heterogeneous chemistry on aerosols of volcanic origin from the eruption of Mt. Pinatubo might have contributed to the negative ozone trends.

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author
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publishing date
type
Contribution to journal
publication status
published
in
Geophysical Research Letters
volume
21
issue
13
pages
4 pages
publisher
American Geophysical Union (AGU)
external identifiers
  • scopus:33749354907
ISSN
0094-8276
DOI
10.1029/93GL02436
language
English
LU publication?
no
id
db8c9c74-a6a9-421e-a1dd-b540574d33b1
date added to LUP
2025-09-30 18:58:16
date last changed
2025-10-01 11:41:26
@article{db8c9c74-a6a9-421e-a1dd-b540574d33b1,
  abstract     = {{<p>In this study we address the question of temporal ozone trends on isentropic surfaces within the Arctic polar vortex during EASOE. We have combined ozone sonde data from twelve campaign stations distributed throughout the European sector of the Arctic. The development of ozone at the 425, 475, 550 and 700K levels is presented, using analysed fields of isentropic potential vorticity and isentropic back‐trajectories to separate inner vortex air from air staying outside the vortex. Vertical N<sub>2</sub>O profiles measured in Kiruna have been used to obtain information on the vertical movement of the polar air mass. Elimination of effects due to diabatic descent leads to a weak, yet significant, chemically induced loss of ozone at 475 K. At 425 K we observe a negative trend in the ozone mixing ratio, but for this level it has not been possible to assess the influence of subsidence. Heterogeneous chemistry on aerosols of volcanic origin from the eruption of Mt. Pinatubo might have contributed to the negative ozone trends.</p>}},
  author       = {{Braathen, Geir O. and Rummukainen, Markku and Kyrö, Esko and Schmidt, Ulrich and Dahlback, Arne and Jørgensen, Torben S. and Fabian, Rolf and Rudakov, Vladimir V. and Gil, Manuel and Borchers, Reinhardt}},
  issn         = {{0094-8276}},
  language     = {{eng}},
  month        = {{06}},
  number       = {{13}},
  pages        = {{1407--1410}},
  publisher    = {{American Geophysical Union (AGU)}},
  series       = {{Geophysical Research Letters}},
  title        = {{Temporal development of ozone within the Arctic Vortex during the winter of 1991/92}},
  url          = {{http://dx.doi.org/10.1029/93GL02436}},
  doi          = {{10.1029/93GL02436}},
  volume       = {{21}},
  year         = {{1994}},
}