Variations in the vertical profile of ozone at four high-latitude Arctic sites from 2005 to 2017
Understanding variations in atmospheric ozone in the Arctic is difficult because there are only a few long-term records of vertical ozone profiles in this region. We present 12 years of ozone profiles from February 2005 to February 2017 at four sites: Summit Station, Greenland; Ny-Ålesund, Svalbard,...
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Online Access: | https://doi.org/10.5194/acp-19-9733-2019 https://doaj.org/article/ac297fedf161401691eb6c3fae457792 |
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ftdoajarticles:oai:doaj.org/article:ac297fedf161401691eb6c3fae457792 2023-05-15T14:58:08+02:00 Variations in the vertical profile of ozone at four high-latitude Arctic sites from 2005 to 2017 S. Bahramvash Shams V. P. Walden I. Petropavlovskikh D. Tarasick R. Kivi S. Oltmans B. Johnson P. Cullis C. W. Sterling L. Thölix Q. Errera 2019-08-01T00:00:00Z https://doi.org/10.5194/acp-19-9733-2019 https://doaj.org/article/ac297fedf161401691eb6c3fae457792 EN eng Copernicus Publications https://www.atmos-chem-phys.net/19/9733/2019/acp-19-9733-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-9733-2019 1680-7316 1680-7324 https://doaj.org/article/ac297fedf161401691eb6c3fae457792 Atmospheric Chemistry and Physics, Vol 19, Pp 9733-9751 (2019) Physics QC1-999 Chemistry QD1-999 article 2019 ftdoajarticles https://doi.org/10.5194/acp-19-9733-2019 2022-12-31T08:52:40Z Understanding variations in atmospheric ozone in the Arctic is difficult because there are only a few long-term records of vertical ozone profiles in this region. We present 12 years of ozone profiles from February 2005 to February 2017 at four sites: Summit Station, Greenland; Ny-Ålesund, Svalbard, Norway; and Alert and Eureka, Nunavut, Canada. These profiles are created by combining ozonesonde measurements with ozone profile retrievals using data from the Microwave Limb Sounder (MLS). This combination creates a high-quality dataset with low uncertainty values by relying on in situ measurements of the maximum altitude of the ozonesondes ( ∼30 km) and satellite retrievals in the upper atmosphere (up to 60 km). For each station, the total column ozone (TCO) and the partial column ozone (PCO) in four atmospheric layers (troposphere to upper stratosphere) are analyzed. Overall, the seasonal cycles are similar at these sites. However, the TCO over Ny-Ålesund starts to decline 2 months later than at the other sites. In summer, the PCO in the upper stratosphere over Summit Station is slightly higher than at the other sites and exhibits a higher standard deviation. The decrease in PCO in the middle and upper stratosphere during fall is also lower over Summit Station. The maximum value of the lower- and middle-stratospheric PCO is reached earlier in the year over Eureka. Trend analysis over the 12-year period shows significant trends in most of the layers over Summit and Ny-Ålesund during summer and fall. To understand deseasonalized ozone variations, we identify the most important dynamical drivers of Arctic ozone at each level. These drivers are chosen based on mutual selected proxies at the four sites using stepwise multiple regression (SMR) analysis of various dynamical parameters with deseasonalized data. The final regression model is able to explain more than 80 % of the TCO and more than 70 % of the PCO in almost all of the layers. The regression model provides the greatest explanatory value in the middle ... Article in Journal/Newspaper Arctic Eureka Greenland Nunavut Ny Ålesund Ny-Ålesund Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Nunavut Ny-Ålesund Canada Greenland Norway Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) Atmospheric Chemistry and Physics 19 15 9733 9751 |
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 S. Bahramvash Shams V. P. Walden I. Petropavlovskikh D. Tarasick R. Kivi S. Oltmans B. Johnson P. Cullis C. W. Sterling L. Thölix Q. Errera Variations in the vertical profile of ozone at four high-latitude Arctic sites from 2005 to 2017 |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Understanding variations in atmospheric ozone in the Arctic is difficult because there are only a few long-term records of vertical ozone profiles in this region. We present 12 years of ozone profiles from February 2005 to February 2017 at four sites: Summit Station, Greenland; Ny-Ålesund, Svalbard, Norway; and Alert and Eureka, Nunavut, Canada. These profiles are created by combining ozonesonde measurements with ozone profile retrievals using data from the Microwave Limb Sounder (MLS). This combination creates a high-quality dataset with low uncertainty values by relying on in situ measurements of the maximum altitude of the ozonesondes ( ∼30 km) and satellite retrievals in the upper atmosphere (up to 60 km). For each station, the total column ozone (TCO) and the partial column ozone (PCO) in four atmospheric layers (troposphere to upper stratosphere) are analyzed. Overall, the seasonal cycles are similar at these sites. However, the TCO over Ny-Ålesund starts to decline 2 months later than at the other sites. In summer, the PCO in the upper stratosphere over Summit Station is slightly higher than at the other sites and exhibits a higher standard deviation. The decrease in PCO in the middle and upper stratosphere during fall is also lower over Summit Station. The maximum value of the lower- and middle-stratospheric PCO is reached earlier in the year over Eureka. Trend analysis over the 12-year period shows significant trends in most of the layers over Summit and Ny-Ålesund during summer and fall. To understand deseasonalized ozone variations, we identify the most important dynamical drivers of Arctic ozone at each level. These drivers are chosen based on mutual selected proxies at the four sites using stepwise multiple regression (SMR) analysis of various dynamical parameters with deseasonalized data. The final regression model is able to explain more than 80 % of the TCO and more than 70 % of the PCO in almost all of the layers. The regression model provides the greatest explanatory value in the middle ... |
format |
Article in Journal/Newspaper |
author |
S. Bahramvash Shams V. P. Walden I. Petropavlovskikh D. Tarasick R. Kivi S. Oltmans B. Johnson P. Cullis C. W. Sterling L. Thölix Q. Errera |
author_facet |
S. Bahramvash Shams V. P. Walden I. Petropavlovskikh D. Tarasick R. Kivi S. Oltmans B. Johnson P. Cullis C. W. Sterling L. Thölix Q. Errera |
author_sort |
S. Bahramvash Shams |
title |
Variations in the vertical profile of ozone at four high-latitude Arctic sites from 2005 to 2017 |
title_short |
Variations in the vertical profile of ozone at four high-latitude Arctic sites from 2005 to 2017 |
title_full |
Variations in the vertical profile of ozone at four high-latitude Arctic sites from 2005 to 2017 |
title_fullStr |
Variations in the vertical profile of ozone at four high-latitude Arctic sites from 2005 to 2017 |
title_full_unstemmed |
Variations in the vertical profile of ozone at four high-latitude Arctic sites from 2005 to 2017 |
title_sort |
variations in the vertical profile of ozone at four high-latitude arctic sites from 2005 to 2017 |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/acp-19-9733-2019 https://doaj.org/article/ac297fedf161401691eb6c3fae457792 |
long_lat |
ENVELOPE(-85.940,-85.940,79.990,79.990) |
geographic |
Arctic Svalbard Nunavut Ny-Ålesund Canada Greenland Norway Eureka |
geographic_facet |
Arctic Svalbard Nunavut Ny-Ålesund Canada Greenland Norway Eureka |
genre |
Arctic Eureka Greenland Nunavut Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
Arctic Eureka Greenland Nunavut Ny Ålesund Ny-Ålesund Svalbard |
op_source |
Atmospheric Chemistry and Physics, Vol 19, Pp 9733-9751 (2019) |
op_relation |
https://www.atmos-chem-phys.net/19/9733/2019/acp-19-9733-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-9733-2019 1680-7316 1680-7324 https://doaj.org/article/ac297fedf161401691eb6c3fae457792 |
op_doi |
https://doi.org/10.5194/acp-19-9733-2019 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
19 |
container_issue |
15 |
container_start_page |
9733 |
op_container_end_page |
9751 |
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