Total ozone variability and trends over the South Pole during the wintertime
The Antarctic polar vortex creates unique chemical and dynamical conditions when the stratospheric air over Antarctica is isolated from the rest of the stratosphere. As a result, stratospheric ozone within the vortex remains largely unchanged for a 5-month period from April until late August when th...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2023
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-23-12731-2023 https://noa.gwlb.de/receive/cop_mods_00069244 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067634/acp-23-12731-2023.pdf https://acp.copernicus.org/articles/23/12731/2023/acp-23-12731-2023.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00069244 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00069244 2023-11-12T04:00:59+01:00 Total ozone variability and trends over the South Pole during the wintertime Fioletov, Vitali Zhao, Xiaoyi Abboud, Ihab Brohart, Michael Ogyu, Akira Sit, Reno Lee, Sum Chi Petropavlovskikh, Irina Miyagawa, Koji Johnson, Bryan J. Cullis, Patrick Booth, John McConville, Glen McElroy, C. Thomas 2023-10 electronic https://doi.org/10.5194/acp-23-12731-2023 https://noa.gwlb.de/receive/cop_mods_00069244 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067634/acp-23-12731-2023.pdf https://acp.copernicus.org/articles/23/12731/2023/acp-23-12731-2023.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-23-12731-2023 https://noa.gwlb.de/receive/cop_mods_00069244 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067634/acp-23-12731-2023.pdf https://acp.copernicus.org/articles/23/12731/2023/acp-23-12731-2023.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/acp-23-12731-2023 2023-10-15T23:22:18Z The Antarctic polar vortex creates unique chemical and dynamical conditions when the stratospheric air over Antarctica is isolated from the rest of the stratosphere. As a result, stratospheric ozone within the vortex remains largely unchanged for a 5-month period from April until late August when the sunrise and extremely cold temperatures create favorable conditions for rapid ozone loss. Such prolonged stable conditions within the vortex make it possible to estimate the total ozone levels there from sparse wintertime ozone observations at the South Pole. The available records of focused Moon (FM) observations by Dobson and Brewer spectrophotometers at the Amundsen–Scott South Pole Station (for the periods 1964–2022 and 2008–2022, respectively) as well as integrated ozonesonde profiles (1986–2022) and MERRA-2 reanalysis data (1980–2022) were used to estimate the total ozone variability and long-term changes over the South Pole. Comparisons with MERRA-2 reanalysis data for the period 1980–2022 demonstrated that the uncertainties of Dobson and Brewer daily mean FM values are about 2.5 %–4 %. Wintertime (April–August) MERRA-2 data have a bias with Dobson data of −8.5 % in 1980–2004 and 1.5 % in 2005–2022. The mean difference between wintertime Dobson and Brewer data in 2008–2022 was about 1.6 %; however, this difference can be largely explained by various systematic errors in Brewer data. The wintertime ozone values over the South Pole during the last 20 years were about 12 % below the pre-1980s level; i.e., the decline there was nearly twice as large as that over southern midlatitudes. It is probably the largest long-term ozone decline aside from the springtime Antarctic ozone depletion. While wintertime ozone decline over the pole has hardly any impact on the environment, it can be used as an indicator to diagnose the state of the ozone layer, particularly because it requires data from only one station. Dobson and ozonesonde data after 2001 show a small positive, but not statistically significant, trend in ozone ... Article in Journal/Newspaper Amundsen-Scott Antarc* Antarctic Antarctica South pole South pole Niedersächsisches Online-Archiv NOA Antarctic The Antarctic South Pole Amundsen-Scott ENVELOPE(0.000,0.000,-90.000,-90.000) Merra ENVELOPE(12.615,12.615,65.816,65.816) Amundsen Scott South Pole Station ENVELOPE(0.000,0.000,-90.000,-90.000) Amundsen-Scott South Pole Station ENVELOPE(139.273,139.273,-89.998,-89.998) Atmospheric Chemistry and Physics 23 19 12731 12751 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Fioletov, Vitali Zhao, Xiaoyi Abboud, Ihab Brohart, Michael Ogyu, Akira Sit, Reno Lee, Sum Chi Petropavlovskikh, Irina Miyagawa, Koji Johnson, Bryan J. Cullis, Patrick Booth, John McConville, Glen McElroy, C. Thomas Total ozone variability and trends over the South Pole during the wintertime |
topic_facet |
article Verlagsveröffentlichung |
description |
The Antarctic polar vortex creates unique chemical and dynamical conditions when the stratospheric air over Antarctica is isolated from the rest of the stratosphere. As a result, stratospheric ozone within the vortex remains largely unchanged for a 5-month period from April until late August when the sunrise and extremely cold temperatures create favorable conditions for rapid ozone loss. Such prolonged stable conditions within the vortex make it possible to estimate the total ozone levels there from sparse wintertime ozone observations at the South Pole. The available records of focused Moon (FM) observations by Dobson and Brewer spectrophotometers at the Amundsen–Scott South Pole Station (for the periods 1964–2022 and 2008–2022, respectively) as well as integrated ozonesonde profiles (1986–2022) and MERRA-2 reanalysis data (1980–2022) were used to estimate the total ozone variability and long-term changes over the South Pole. Comparisons with MERRA-2 reanalysis data for the period 1980–2022 demonstrated that the uncertainties of Dobson and Brewer daily mean FM values are about 2.5 %–4 %. Wintertime (April–August) MERRA-2 data have a bias with Dobson data of −8.5 % in 1980–2004 and 1.5 % in 2005–2022. The mean difference between wintertime Dobson and Brewer data in 2008–2022 was about 1.6 %; however, this difference can be largely explained by various systematic errors in Brewer data. The wintertime ozone values over the South Pole during the last 20 years were about 12 % below the pre-1980s level; i.e., the decline there was nearly twice as large as that over southern midlatitudes. It is probably the largest long-term ozone decline aside from the springtime Antarctic ozone depletion. While wintertime ozone decline over the pole has hardly any impact on the environment, it can be used as an indicator to diagnose the state of the ozone layer, particularly because it requires data from only one station. Dobson and ozonesonde data after 2001 show a small positive, but not statistically significant, trend in ozone ... |
format |
Article in Journal/Newspaper |
author |
Fioletov, Vitali Zhao, Xiaoyi Abboud, Ihab Brohart, Michael Ogyu, Akira Sit, Reno Lee, Sum Chi Petropavlovskikh, Irina Miyagawa, Koji Johnson, Bryan J. Cullis, Patrick Booth, John McConville, Glen McElroy, C. Thomas |
author_facet |
Fioletov, Vitali Zhao, Xiaoyi Abboud, Ihab Brohart, Michael Ogyu, Akira Sit, Reno Lee, Sum Chi Petropavlovskikh, Irina Miyagawa, Koji Johnson, Bryan J. Cullis, Patrick Booth, John McConville, Glen McElroy, C. Thomas |
author_sort |
Fioletov, Vitali |
title |
Total ozone variability and trends over the South Pole during the wintertime |
title_short |
Total ozone variability and trends over the South Pole during the wintertime |
title_full |
Total ozone variability and trends over the South Pole during the wintertime |
title_fullStr |
Total ozone variability and trends over the South Pole during the wintertime |
title_full_unstemmed |
Total ozone variability and trends over the South Pole during the wintertime |
title_sort |
total ozone variability and trends over the south pole during the wintertime |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/acp-23-12731-2023 https://noa.gwlb.de/receive/cop_mods_00069244 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067634/acp-23-12731-2023.pdf https://acp.copernicus.org/articles/23/12731/2023/acp-23-12731-2023.pdf |
long_lat |
ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(12.615,12.615,65.816,65.816) ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(139.273,139.273,-89.998,-89.998) |
geographic |
Antarctic The Antarctic South Pole Amundsen-Scott Merra Amundsen Scott South Pole Station Amundsen-Scott South Pole Station |
geographic_facet |
Antarctic The Antarctic South Pole Amundsen-Scott Merra Amundsen Scott South Pole Station Amundsen-Scott South Pole Station |
genre |
Amundsen-Scott Antarc* Antarctic Antarctica South pole South pole |
genre_facet |
Amundsen-Scott Antarc* Antarctic Antarctica South pole South pole |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-23-12731-2023 https://noa.gwlb.de/receive/cop_mods_00069244 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067634/acp-23-12731-2023.pdf https://acp.copernicus.org/articles/23/12731/2023/acp-23-12731-2023.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-23-12731-2023 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
23 |
container_issue |
19 |
container_start_page |
12731 |
op_container_end_page |
12751 |
_version_ |
1782329097801695232 |