Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations
Within the European project UFTIR (Time series of Upper Free Troposphere observations from an European ground-based FTIR network), six ground-based stations in Western Europe, from 79° N to 28° N, all equipped with Fourier Transform infrared (FTIR) instruments and part of the Network for the Detecti...
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ftdoajarticles:oai:doaj.org/article:05a6801012d7472ea070c91a187074fd 2023-05-15T17:04:21+02:00 Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations C. Vigouroux M. De Mazière P. Demoulin C. Servais F. Hase T. Blumenstock I. Kramer M. Schneider J. Mellqvist A. Strandberg V. Velazco J. Notholt R. Sussmann W. Stremme A. Rockmann T. Gardiner M. Coleman P. Woods 2008-12-01T00:00:00Z https://doaj.org/article/05a6801012d7472ea070c91a187074fd EN eng Copernicus Publications http://www.atmos-chem-phys.net/8/6865/2008/acp-8-6865-2008.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/05a6801012d7472ea070c91a187074fd Atmospheric Chemistry and Physics, Vol 8, Iss 23, Pp 6865-6886 (2008) Physics QC1-999 Chemistry QD1-999 article 2008 ftdoajarticles 2022-12-31T02:35:03Z Within the European project UFTIR (Time series of Upper Free Troposphere observations from an European ground-based FTIR network), six ground-based stations in Western Europe, from 79° N to 28° N, all equipped with Fourier Transform infrared (FTIR) instruments and part of the Network for the Detection of Atmospheric Composition Change (NDACC), have joined their efforts to evaluate the trends of several direct and indirect greenhouse gases over the period 1995–2004. The retrievals of CO, CH 4 , C 2 H 6 , N 2 O, CHClF 2 , and O 3 have been optimized. Using the optimal estimation method, some vertical information can be obtained in addition to total column amounts. A bootstrap resampling method has been implemented to determine annual partial and total column trends for the target gases. The present work focuses on the ozone results. The retrieved time series of partial and total ozone columns are validated with ground-based correlative data (Brewer, Dobson, UV-Vis, ozonesondes, and Lidar). The observed total column ozone trends are in agreement with previous studies: 1) no total column ozone trend is seen at the lowest latitude station Izaña (28° N); 2) slightly positive total column trends are seen at the two mid-latitude stations Zugspitze and Jungfraujoch (47° N), only one of them being significant; 3) the highest latitude stations Harestua (60° N), Kiruna (68° N) and Ny-Ålesund (79° N) show significant positive total column trends. Following the vertical information contained in the ozone FTIR retrievals, we provide partial columns trends for the layers: ground-10 km, 10–18 km, 18–27 km, and 27–42 km, which helps to distinguish the contributions from dynamical and chemical changes on the total column ozone trends. We obtain no statistically significant trends in the ground-10 km layer for five out of the six ground-based stations. We find significant positive trends for the lowermost stratosphere at the two mid-latitude stations, and at Ny-Ålesund. We find smaller, but significant trends for the 18–27 km layer ... Article in Journal/Newspaper Kiruna Ny Ålesund Ny-Ålesund Directory of Open Access Journals: DOAJ Articles Kiruna Ny-Ålesund |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 C. Vigouroux M. De Mazière P. Demoulin C. Servais F. Hase T. Blumenstock I. Kramer M. Schneider J. Mellqvist A. Strandberg V. Velazco J. Notholt R. Sussmann W. Stremme A. Rockmann T. Gardiner M. Coleman P. Woods Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Within the European project UFTIR (Time series of Upper Free Troposphere observations from an European ground-based FTIR network), six ground-based stations in Western Europe, from 79° N to 28° N, all equipped with Fourier Transform infrared (FTIR) instruments and part of the Network for the Detection of Atmospheric Composition Change (NDACC), have joined their efforts to evaluate the trends of several direct and indirect greenhouse gases over the period 1995–2004. The retrievals of CO, CH 4 , C 2 H 6 , N 2 O, CHClF 2 , and O 3 have been optimized. Using the optimal estimation method, some vertical information can be obtained in addition to total column amounts. A bootstrap resampling method has been implemented to determine annual partial and total column trends for the target gases. The present work focuses on the ozone results. The retrieved time series of partial and total ozone columns are validated with ground-based correlative data (Brewer, Dobson, UV-Vis, ozonesondes, and Lidar). The observed total column ozone trends are in agreement with previous studies: 1) no total column ozone trend is seen at the lowest latitude station Izaña (28° N); 2) slightly positive total column trends are seen at the two mid-latitude stations Zugspitze and Jungfraujoch (47° N), only one of them being significant; 3) the highest latitude stations Harestua (60° N), Kiruna (68° N) and Ny-Ålesund (79° N) show significant positive total column trends. Following the vertical information contained in the ozone FTIR retrievals, we provide partial columns trends for the layers: ground-10 km, 10–18 km, 18–27 km, and 27–42 km, which helps to distinguish the contributions from dynamical and chemical changes on the total column ozone trends. We obtain no statistically significant trends in the ground-10 km layer for five out of the six ground-based stations. We find significant positive trends for the lowermost stratosphere at the two mid-latitude stations, and at Ny-Ålesund. We find smaller, but significant trends for the 18–27 km layer ... |
format |
Article in Journal/Newspaper |
author |
C. Vigouroux M. De Mazière P. Demoulin C. Servais F. Hase T. Blumenstock I. Kramer M. Schneider J. Mellqvist A. Strandberg V. Velazco J. Notholt R. Sussmann W. Stremme A. Rockmann T. Gardiner M. Coleman P. Woods |
author_facet |
C. Vigouroux M. De Mazière P. Demoulin C. Servais F. Hase T. Blumenstock I. Kramer M. Schneider J. Mellqvist A. Strandberg V. Velazco J. Notholt R. Sussmann W. Stremme A. Rockmann T. Gardiner M. Coleman P. Woods |
author_sort |
C. Vigouroux |
title |
Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations |
title_short |
Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations |
title_full |
Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations |
title_fullStr |
Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations |
title_full_unstemmed |
Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations |
title_sort |
evaluation of tropospheric and stratospheric ozone trends over western europe from ground-based ftir network observations |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
https://doaj.org/article/05a6801012d7472ea070c91a187074fd |
geographic |
Kiruna Ny-Ålesund |
geographic_facet |
Kiruna Ny-Ålesund |
genre |
Kiruna Ny Ålesund Ny-Ålesund |
genre_facet |
Kiruna Ny Ålesund Ny-Ålesund |
op_source |
Atmospheric Chemistry and Physics, Vol 8, Iss 23, Pp 6865-6886 (2008) |
op_relation |
http://www.atmos-chem-phys.net/8/6865/2008/acp-8-6865-2008.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/05a6801012d7472ea070c91a187074fd |
_version_ |
1766058435176038400 |