The influence of the North Atlantic Oscillation and El Niño–Southern Oscillation on mean and extreme values of column ozone over the United States
Continuous measurements of total ozone (by Dobson spectrophotometers) across the contiguous United States began in the early 1960s. Here, we analyze temporal and spatial variability and trends in total ozone from the five US sites with long-term records. While similar long-term ozone changes are det...
Published in: | Atmospheric Chemistry and Physics |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00044552 2023-05-15T17:31:38+02:00 The influence of the North Atlantic Oscillation and El Niño–Southern Oscillation on mean and extreme values of column ozone over the United States Petropavlovskikh, I. Evans, R. McConville, G. Manney, G. L. Rieder, H. E. 2015-02 electronic https://doi.org/10.5194/acp-15-1585-2015 https://noa.gwlb.de/receive/cop_mods_00044552 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044172/acp-15-1585-2015.pdf https://acp.copernicus.org/articles/15/1585/2015/acp-15-1585-2015.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-15-1585-2015 https://noa.gwlb.de/receive/cop_mods_00044552 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044172/acp-15-1585-2015.pdf https://acp.copernicus.org/articles/15/1585/2015/acp-15-1585-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/acp-15-1585-2015 2022-02-08T22:40:00Z Continuous measurements of total ozone (by Dobson spectrophotometers) across the contiguous United States began in the early 1960s. Here, we analyze temporal and spatial variability and trends in total ozone from the five US sites with long-term records. While similar long-term ozone changes are detected at all five sites, we find differences in the patterns of ozone variability on shorter timescales. In addition to standard evaluation techniques, STL-decomposition methods (Seasonal Trend decomposition of time series based on LOESS (LOcally wEighted Scatterplot Smoothing)) are used to address temporal variability and "fingerprints" of dynamical features in the Dobson data. Methods from statistical extreme value theory (EVT) are used to characterize days with high and low total ozone (termed EHOs and ELOs, respectively) at each station and to analyze temporal changes in the frequency of ozone extremes and their relationship to dynamical features such as the North Atlantic Oscillation (NAO) and El Niño–Southern Oscillation. A comparison of the fingerprints detected in the frequency distribution of the extremes with those for standard metrics (i.e., the mean) shows that more fingerprints are found for the extremes, particularly for the positive phase of the NAO, at all five US monitoring sites. Results from the STL decomposition support the findings of the EVT analysis. Finally, we analyze the relative influence of low- and high-ozone events on seasonal mean column ozone at each station. The results show that the influence of ELOs and EHOs on seasonal mean column ozone can be as much as ±5 %, about as large as the overall long-term decadal ozone trends. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Niedersächsisches Online-Archiv NOA Atmospheric Chemistry and Physics 15 3 1585 1598 |
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article Verlagsveröffentlichung Petropavlovskikh, I. Evans, R. McConville, G. Manney, G. L. Rieder, H. E. The influence of the North Atlantic Oscillation and El Niño–Southern Oscillation on mean and extreme values of column ozone over the United States |
topic_facet |
article Verlagsveröffentlichung |
description |
Continuous measurements of total ozone (by Dobson spectrophotometers) across the contiguous United States began in the early 1960s. Here, we analyze temporal and spatial variability and trends in total ozone from the five US sites with long-term records. While similar long-term ozone changes are detected at all five sites, we find differences in the patterns of ozone variability on shorter timescales. In addition to standard evaluation techniques, STL-decomposition methods (Seasonal Trend decomposition of time series based on LOESS (LOcally wEighted Scatterplot Smoothing)) are used to address temporal variability and "fingerprints" of dynamical features in the Dobson data. Methods from statistical extreme value theory (EVT) are used to characterize days with high and low total ozone (termed EHOs and ELOs, respectively) at each station and to analyze temporal changes in the frequency of ozone extremes and their relationship to dynamical features such as the North Atlantic Oscillation (NAO) and El Niño–Southern Oscillation. A comparison of the fingerprints detected in the frequency distribution of the extremes with those for standard metrics (i.e., the mean) shows that more fingerprints are found for the extremes, particularly for the positive phase of the NAO, at all five US monitoring sites. Results from the STL decomposition support the findings of the EVT analysis. Finally, we analyze the relative influence of low- and high-ozone events on seasonal mean column ozone at each station. The results show that the influence of ELOs and EHOs on seasonal mean column ozone can be as much as ±5 %, about as large as the overall long-term decadal ozone trends. |
format |
Article in Journal/Newspaper |
author |
Petropavlovskikh, I. Evans, R. McConville, G. Manney, G. L. Rieder, H. E. |
author_facet |
Petropavlovskikh, I. Evans, R. McConville, G. Manney, G. L. Rieder, H. E. |
author_sort |
Petropavlovskikh, I. |
title |
The influence of the North Atlantic Oscillation and El Niño–Southern Oscillation on mean and extreme values of column ozone over the United States |
title_short |
The influence of the North Atlantic Oscillation and El Niño–Southern Oscillation on mean and extreme values of column ozone over the United States |
title_full |
The influence of the North Atlantic Oscillation and El Niño–Southern Oscillation on mean and extreme values of column ozone over the United States |
title_fullStr |
The influence of the North Atlantic Oscillation and El Niño–Southern Oscillation on mean and extreme values of column ozone over the United States |
title_full_unstemmed |
The influence of the North Atlantic Oscillation and El Niño–Southern Oscillation on mean and extreme values of column ozone over the United States |
title_sort |
influence of the north atlantic oscillation and el niño–southern oscillation on mean and extreme values of column ozone over the united states |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/acp-15-1585-2015 https://noa.gwlb.de/receive/cop_mods_00044552 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044172/acp-15-1585-2015.pdf https://acp.copernicus.org/articles/15/1585/2015/acp-15-1585-2015.pdf |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
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-15-1585-2015 https://noa.gwlb.de/receive/cop_mods_00044552 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044172/acp-15-1585-2015.pdf https://acp.copernicus.org/articles/15/1585/2015/acp-15-1585-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-15-1585-2015 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
15 |
container_issue |
3 |
container_start_page |
1585 |
op_container_end_page |
1598 |
_version_ |
1766129316689608704 |