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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ftdoajarticles:oai:doaj.org/article:f85385c9743941f0b33e14481d22cc45 2023-05-15T13:25:38+02:00 Total ozone trends at three northern high-latitude stations L. Bernet T. Svendby G. Hansen Y. Orsolini A. Dahlback F. Goutail A. Pazmiño B. Petkov A. Kylling 2023-04-01T00:00:00Z https://doi.org/10.5194/acp-23-4165-2023 https://doaj.org/article/f85385c9743941f0b33e14481d22cc45 EN eng Copernicus Publications https://acp.copernicus.org/articles/23/4165/2023/acp-23-4165-2023.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-23-4165-2023 1680-7316 1680-7324 https://doaj.org/article/f85385c9743941f0b33e14481d22cc45 Atmospheric Chemistry and Physics, Vol 23, Pp 4165-4184 (2023) Physics QC1-999 Chemistry QD1-999 article 2023 ftdoajarticles https://doi.org/10.5194/acp-23-4165-2023 2023-04-09T00:32:33Z 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. Article in Journal/Newspaper Andøya Arctic Climate change Ny Ålesund Ny-Ålesund Directory of Open Access Journals: DOAJ Articles 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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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 L. Bernet T. Svendby G. Hansen Y. Orsolini A. Dahlback F. Goutail A. Pazmiño B. Petkov A. Kylling Total ozone trends at three northern high-latitude stations |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
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. |
format |
Article in Journal/Newspaper |
author |
L. Bernet T. Svendby G. Hansen Y. Orsolini A. Dahlback F. Goutail A. Pazmiño B. Petkov A. Kylling |
author_facet |
L. Bernet T. Svendby G. Hansen Y. Orsolini A. Dahlback F. Goutail A. Pazmiño B. Petkov A. Kylling |
author_sort |
L. Bernet |
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 |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/acp-23-4165-2023 https://doaj.org/article/f85385c9743941f0b33e14481d22cc45 |
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 |
Atmospheric Chemistry and Physics, Vol 23, Pp 4165-4184 (2023) |
op_relation |
https://acp.copernicus.org/articles/23/4165/2023/acp-23-4165-2023.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-23-4165-2023 1680-7316 1680-7324 https://doaj.org/article/f85385c9743941f0b33e14481d22cc45 |
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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1766386792751169536 |