Total ozone trends at three northern high-latitude stations
After the decrease of ozone-depleting substances (ODSs) as a consequence of the Montreal Protocol, it is still challenging to detect a recovery in the total column amount of ozone (total ozone) at northern high latitudes. To assess regional total ozone changes in the “ozone-recovery” period (2000–20...
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Online Access: | https://hdl.handle.net/11250/3062606 https://doi.org/10.5194/acp-23-4165-2023 |
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ftnilu:oai:nilu.brage.unit.no:11250/3062606 2023-07-30T03:56:09+02:00 Total ozone trends at three northern high-latitude stations Bernet, Leonie Svendby, Tove Marit Hansen, Georg Heinrich Orsolini, Yvan Dahlback, Arne Goutail, Florence Pazmino, Andrea Petkov, Boyan Kylling, Arve 2023 application/pdf https://hdl.handle.net/11250/3062606 https://doi.org/10.5194/acp-23-4165-2023 eng eng NILU: 121002 Atmospheric Chemistry and Physics (ACP). 2023, 23, 4165-4184. urn:issn:1680-7316 https://hdl.handle.net/11250/3062606 https://doi.org/10.5194/acp-23-4165-2023 cristin:2139952 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © Author(s) 2023. 4165-4184 23 Atmospheric Chemistry and Physics (ACP) Peer reviewed Journal article 2023 ftnilu https://doi.org/10.5194/acp-23-4165-2023 2023-07-08T19:54:14Z After the decrease of ozone-depleting substances (ODSs) as a consequence of the Montreal Protocol, it is still challenging to detect a recovery in the total column amount of ozone (total ozone) at northern high latitudes. To assess regional total ozone changes in the “ozone-recovery” period (2000–2020) at northern high latitudes, this study investigates trends from ground-based total ozone measurements at three stations in Norway (Oslo, Andøya, and Ny-Ålesund). For this purpose, we combine measurements from Brewer spectrophotometers, ground-based UV filter radiometers (GUVs), and a SAOZ (Système d'Analyse par Observation Zénithale) instrument. The Brewer measurements have been extended to work under cloudy conditions using the global irradiance (GI) technique, which is also presented in this study. We derive trends from the combined ground-based time series with the multiple linear regression model from the Long-term Ozone Trends and Uncertainties in the Stratosphere (LOTUS) project. We evaluate various predictors in the regression model and found that tropopause pressure and lower-stratospheric temperature contribute most to ozone variability at the three stations. We report significantly positive annual trends at Andøya (0.9±0.7 % per decade) and Ny-Ålesund (1.5±0.1 % per decade) and no significant annual trend at Oslo (0.1±0.5 % per decade) but significantly positive trends in autumn at all stations. Finally we found positive but insignificant trends of around 3 % per decade in March at all three stations, which may be an indication of Arctic springtime ozone recovery. Our results contribute to a better understanding of regional total ozone trends at northern high latitudes, which is essential to assess how Arctic ozone responds to changes in ODSs and to climate change. publishedVersion Article in Journal/Newspaper Andøya Arctic Climate change Ny Ålesund Ny-Ålesund NILU – Norwegian Institute for Air Research: NILU Brage Arctic Ny-Ålesund Norway Andøya ENVELOPE(13.982,13.982,68.185,68.185) Atmospheric Chemistry and Physics 23 7 4165 4184 |
institution |
Open Polar |
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NILU – Norwegian Institute for Air Research: NILU Brage |
op_collection_id |
ftnilu |
language |
English |
description |
After the decrease of ozone-depleting substances (ODSs) as a consequence of the Montreal Protocol, it is still challenging to detect a recovery in the total column amount of ozone (total ozone) at northern high latitudes. To assess regional total ozone changes in the “ozone-recovery” period (2000–2020) at northern high latitudes, this study investigates trends from ground-based total ozone measurements at three stations in Norway (Oslo, Andøya, and Ny-Ålesund). For this purpose, we combine measurements from Brewer spectrophotometers, ground-based UV filter radiometers (GUVs), and a SAOZ (Système d'Analyse par Observation Zénithale) instrument. The Brewer measurements have been extended to work under cloudy conditions using the global irradiance (GI) technique, which is also presented in this study. We derive trends from the combined ground-based time series with the multiple linear regression model from the Long-term Ozone Trends and Uncertainties in the Stratosphere (LOTUS) project. We evaluate various predictors in the regression model and found that tropopause pressure and lower-stratospheric temperature contribute most to ozone variability at the three stations. We report significantly positive annual trends at Andøya (0.9±0.7 % per decade) and Ny-Ålesund (1.5±0.1 % per decade) and no significant annual trend at Oslo (0.1±0.5 % per decade) but significantly positive trends in autumn at all stations. Finally we found positive but insignificant trends of around 3 % per decade in March at all three stations, which may be an indication of Arctic springtime ozone recovery. Our results contribute to a better understanding of regional total ozone trends at northern high latitudes, which is essential to assess how Arctic ozone responds to changes in ODSs and to climate change. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Bernet, Leonie Svendby, Tove Marit Hansen, Georg Heinrich Orsolini, Yvan Dahlback, Arne Goutail, Florence Pazmino, Andrea Petkov, Boyan Kylling, Arve |
spellingShingle |
Bernet, Leonie Svendby, Tove Marit Hansen, Georg Heinrich Orsolini, Yvan Dahlback, Arne Goutail, Florence Pazmino, Andrea Petkov, Boyan Kylling, Arve Total ozone trends at three northern high-latitude stations |
author_facet |
Bernet, Leonie Svendby, Tove Marit Hansen, Georg Heinrich Orsolini, Yvan Dahlback, Arne Goutail, Florence Pazmino, Andrea Petkov, Boyan Kylling, Arve |
author_sort |
Bernet, Leonie |
title |
Total ozone trends at three northern high-latitude stations |
title_short |
Total ozone trends at three northern high-latitude stations |
title_full |
Total ozone trends at three northern high-latitude stations |
title_fullStr |
Total ozone trends at three northern high-latitude stations |
title_full_unstemmed |
Total ozone trends at three northern high-latitude stations |
title_sort |
total ozone trends at three northern high-latitude stations |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3062606 https://doi.org/10.5194/acp-23-4165-2023 |
long_lat |
ENVELOPE(13.982,13.982,68.185,68.185) |
geographic |
Arctic Ny-Ålesund Norway Andøya |
geographic_facet |
Arctic Ny-Ålesund Norway Andøya |
genre |
Andøya Arctic Climate change Ny Ålesund Ny-Ålesund |
genre_facet |
Andøya Arctic Climate change Ny Ålesund Ny-Ålesund |
op_source |
4165-4184 23 Atmospheric Chemistry and Physics (ACP) |
op_relation |
NILU: 121002 Atmospheric Chemistry and Physics (ACP). 2023, 23, 4165-4184. urn:issn:1680-7316 https://hdl.handle.net/11250/3062606 https://doi.org/10.5194/acp-23-4165-2023 cristin:2139952 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © Author(s) 2023. |
op_doi |
https://doi.org/10.5194/acp-23-4165-2023 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
23 |
container_issue |
7 |
container_start_page |
4165 |
op_container_end_page |
4184 |
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1772811203088744448 |