Chemical and dynamical contributions to ozone profile trends of the Payerne (Switzerland) balloon soundings
Long-term changes in the vertical ozone distribution over Switzerland are examined for the period 1967–2000. A statistical trend analysis is performed accounting for chemical and dynamical variability. The tropopause pressure, the North Atlantic oscillation (NAO), the Arctic oscillation (AO), and th...
Published in: | Journal of Geophysical Research: Atmospheres |
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Language: | English |
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Online Access: | https://doi.org/10.1029/2000JD000106 |
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ftempa:oai:dora:empa_1235 2023-05-15T15:10:57+02:00 Chemical and dynamical contributions to ozone profile trends of the Payerne (Switzerland) balloon soundings Weiss, Andrea K. Staehelin, Johannes Appenzeller, Christof Harriset, Neil R.P. 2002 https://doi.org/10.1029/2000JD000106 eng eng Wiley Journal of Geophysical Research D: Atmospheres--J. Geophys. Res. D--journals:1630--2169-897X--2169-8996 empa:1235 journal id: journals:1630 issn: 2169-897X e-issn: 2169-8996 ut: 000171538600009 local: 6727 scopus: 2-s2.0-0034754705 doi:10.1029/2000JD000106 Text Journal Article 2002 ftempa https://doi.org/10.1029/2000JD000106 2023-03-04T17:17:51Z Long-term changes in the vertical ozone distribution over Switzerland are examined for the period 1967–2000. A statistical trend analysis is performed accounting for chemical and dynamical variability. The tropopause pressure, the North Atlantic oscillation (NAO), the Arctic oscillation (AO), and the quasi-biennial oscillation (QBO) are used as dynamical quantities. In addition, the solar effect and an ozone depletion factor (ODF), which describes the joint effect of stratospheric chlorine and aerosol loading, are included. A term is allowed for an unexplained linear trend. The various influences on ozone are estimated employing stepwise regression. Tropopause pressure and lower stratospheric ozone (10–19 km) variability are found to be strongly linked throughout the year. The NAO-AO indices show a negative correlation with lower stratospheric ozone in winter-spring. A positive correlation of NAO-AO and ozone is found in the middle stratosphere (23–30 km) during late summer to early winter. There is a solar signal in the middle stratosphere which becomes strongly significant in summer. The QBO signal is prominent at the height of the ozone maximum in winter-spring. The unexplained trends are much larger than the contributions of the ODF, suggesting that mechanisms other than midlatitude in situ chemistry are mostly responsible for the observed ozone loss. In the lowermost stratosphere (10–15 km), the observed ozone trends are found to be caused by dynamics. Above, the residual ozone trend (in percent) is independent of height and in the range of −2% to −5% per decade up to 30 km. Article in Journal/Newspaper Arctic North Atlantic North Atlantic oscillation DORA Empa Arctic Journal of Geophysical Research: Atmospheres 106 D19 22685 22694 |
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Open Polar |
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ftempa |
language |
English |
description |
Long-term changes in the vertical ozone distribution over Switzerland are examined for the period 1967–2000. A statistical trend analysis is performed accounting for chemical and dynamical variability. The tropopause pressure, the North Atlantic oscillation (NAO), the Arctic oscillation (AO), and the quasi-biennial oscillation (QBO) are used as dynamical quantities. In addition, the solar effect and an ozone depletion factor (ODF), which describes the joint effect of stratospheric chlorine and aerosol loading, are included. A term is allowed for an unexplained linear trend. The various influences on ozone are estimated employing stepwise regression. Tropopause pressure and lower stratospheric ozone (10–19 km) variability are found to be strongly linked throughout the year. The NAO-AO indices show a negative correlation with lower stratospheric ozone in winter-spring. A positive correlation of NAO-AO and ozone is found in the middle stratosphere (23–30 km) during late summer to early winter. There is a solar signal in the middle stratosphere which becomes strongly significant in summer. The QBO signal is prominent at the height of the ozone maximum in winter-spring. The unexplained trends are much larger than the contributions of the ODF, suggesting that mechanisms other than midlatitude in situ chemistry are mostly responsible for the observed ozone loss. In the lowermost stratosphere (10–15 km), the observed ozone trends are found to be caused by dynamics. Above, the residual ozone trend (in percent) is independent of height and in the range of −2% to −5% per decade up to 30 km. |
format |
Article in Journal/Newspaper |
author |
Weiss, Andrea K. Staehelin, Johannes Appenzeller, Christof Harriset, Neil R.P. |
spellingShingle |
Weiss, Andrea K. Staehelin, Johannes Appenzeller, Christof Harriset, Neil R.P. Chemical and dynamical contributions to ozone profile trends of the Payerne (Switzerland) balloon soundings |
author_facet |
Weiss, Andrea K. Staehelin, Johannes Appenzeller, Christof Harriset, Neil R.P. |
author_sort |
Weiss, Andrea K. |
title |
Chemical and dynamical contributions to ozone profile trends of the Payerne (Switzerland) balloon soundings |
title_short |
Chemical and dynamical contributions to ozone profile trends of the Payerne (Switzerland) balloon soundings |
title_full |
Chemical and dynamical contributions to ozone profile trends of the Payerne (Switzerland) balloon soundings |
title_fullStr |
Chemical and dynamical contributions to ozone profile trends of the Payerne (Switzerland) balloon soundings |
title_full_unstemmed |
Chemical and dynamical contributions to ozone profile trends of the Payerne (Switzerland) balloon soundings |
title_sort |
chemical and dynamical contributions to ozone profile trends of the payerne (switzerland) balloon soundings |
publisher |
Wiley |
publishDate |
2002 |
url |
https://doi.org/10.1029/2000JD000106 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic North Atlantic oscillation |
genre_facet |
Arctic North Atlantic North Atlantic oscillation |
op_relation |
Journal of Geophysical Research D: Atmospheres--J. Geophys. Res. D--journals:1630--2169-897X--2169-8996 empa:1235 journal id: journals:1630 issn: 2169-897X e-issn: 2169-8996 ut: 000171538600009 local: 6727 scopus: 2-s2.0-0034754705 doi:10.1029/2000JD000106 |
op_doi |
https://doi.org/10.1029/2000JD000106 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
106 |
container_issue |
D19 |
container_start_page |
22685 |
op_container_end_page |
22694 |
_version_ |
1766341878287958016 |