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 degrees N to 28 degrees N, all equipped with Fourier Transform infrared (FTIR) instruments and part of the Network f...
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Online Access: | https://doi.org/10.5194/acp-8-6865-2008 https://research.chalmers.se/en/publication/100639 |
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ftchalmersuniv:oai:research.chalmers.se:100639 2023-05-15T17:04:22+02:00 Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations Vigouroux, C. De Maziere, M. Demoulin, P. Servais, C. Hase, F. Blumenstock, T. Kramer, I. Schneider, M. Mellqvist, Johan Strandberg, Anders Velazco, V. Notholt, J. Sussmann, R. Stremme, W. Rockmann, A. Gardiner, T. Coleman, M. Woods, P. 2008 text https://doi.org/10.5194/acp-8-6865-2008 https://research.chalmers.se/en/publication/100639 unknown http://dx.doi.org/10.5194/acp-8-6865-2008 https://research.chalmers.se/en/publication/100639 Aerospace Engineering HIGH-RESOLUTION RECOVERY NORTHERN MOLECULAR SPECTROSCOPIC DATABASE RETRIEVAL ABSORPTION SEARCH SPECTRA 2008 ftchalmersuniv https://doi.org/10.5194/acp-8-6865-2008 2022-12-11T07:10:19Z 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 degrees N to 28 degrees 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, CH4, C2H6, N2O, CHClF2, 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 Izana (28 degrees N); 2) slightly positive total column trends are seen at the two mid-latitude stations Zugspitze and Jungfraujoch (47 degrees N), only one of them being significant; 3) the highest latitude stations Harestua (60 degrees N), Kiruna (68 degrees N) and Ny-Alesund (79 degrees 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 lower-most stratosphere at the two mid-latitude stations, and at Ny-Alesund. We find smaller, but ... Other/Unknown Material Kiruna Chalmers University of Technology: Chalmers research Kiruna Atmospheric Chemistry and Physics 8 23 6865 6886 |
institution |
Open Polar |
collection |
Chalmers University of Technology: Chalmers research |
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ftchalmersuniv |
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unknown |
topic |
Aerospace Engineering HIGH-RESOLUTION RECOVERY NORTHERN MOLECULAR SPECTROSCOPIC DATABASE RETRIEVAL ABSORPTION SEARCH SPECTRA |
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Aerospace Engineering HIGH-RESOLUTION RECOVERY NORTHERN MOLECULAR SPECTROSCOPIC DATABASE RETRIEVAL ABSORPTION SEARCH SPECTRA Vigouroux, C. De Maziere, M. Demoulin, P. Servais, C. Hase, F. Blumenstock, T. Kramer, I. Schneider, M. Mellqvist, Johan Strandberg, Anders Velazco, V. Notholt, J. Sussmann, R. Stremme, W. Rockmann, A. Gardiner, T. Coleman, M. Woods, P. Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations |
topic_facet |
Aerospace Engineering HIGH-RESOLUTION RECOVERY NORTHERN MOLECULAR SPECTROSCOPIC DATABASE RETRIEVAL ABSORPTION SEARCH SPECTRA |
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 degrees N to 28 degrees 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, CH4, C2H6, N2O, CHClF2, 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 Izana (28 degrees N); 2) slightly positive total column trends are seen at the two mid-latitude stations Zugspitze and Jungfraujoch (47 degrees N), only one of them being significant; 3) the highest latitude stations Harestua (60 degrees N), Kiruna (68 degrees N) and Ny-Alesund (79 degrees 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 lower-most stratosphere at the two mid-latitude stations, and at Ny-Alesund. We find smaller, but ... |
author |
Vigouroux, C. De Maziere, M. Demoulin, P. Servais, C. Hase, F. Blumenstock, T. Kramer, I. Schneider, M. Mellqvist, Johan Strandberg, Anders Velazco, V. Notholt, J. Sussmann, R. Stremme, W. Rockmann, A. Gardiner, T. Coleman, M. Woods, P. |
author_facet |
Vigouroux, C. De Maziere, M. Demoulin, P. Servais, C. Hase, F. Blumenstock, T. Kramer, I. Schneider, M. Mellqvist, Johan Strandberg, Anders Velazco, V. Notholt, J. Sussmann, R. Stremme, W. Rockmann, A. Gardiner, T. Coleman, M. Woods, P. |
author_sort |
Vigouroux, C. |
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 |
publishDate |
2008 |
url |
https://doi.org/10.5194/acp-8-6865-2008 https://research.chalmers.se/en/publication/100639 |
geographic |
Kiruna |
geographic_facet |
Kiruna |
genre |
Kiruna |
genre_facet |
Kiruna |
op_relation |
http://dx.doi.org/10.5194/acp-8-6865-2008 https://research.chalmers.se/en/publication/100639 |
op_doi |
https://doi.org/10.5194/acp-8-6865-2008 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
8 |
container_issue |
23 |
container_start_page |
6865 |
op_container_end_page |
6886 |
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1766058439423819776 |