Impact of circulation changes on the long-term trend of stratospheric hydrogen fluoride at five NDACC stations
Hydrogen fluoride is mainly produced by the photolysis of anthropogenic source gases such as the chlorofluorocarbons (CFC), the hydrochlorofluorocarbons (HCFC) and the hydrofluorocarbons (HFC). These families of species are known for contributing to ozone depletion and/or to the greenhouse effect. I...
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ftorbi:oai:orbi.ulg.ac.be:2268/211288 2024-10-20T14:10:01+00:00 Impact of circulation changes on the long-term trend of stratospheric hydrogen fluoride at five NDACC stations Prignon, Maxime Bernath, P.F. Blumenstock, T. Chipperfield, M.P. Hase, F. Schneider, M. Smale, D. Walker, W.A. Chabrillat, S. Servais, Christian Mahieu, Emmanuel 2017-05-29 https://orbi.uliege.be/handle/2268/211288 https://orbi.uliege.be/bitstream/2268/211288/1/Poster_IRWG2017.pdf en eng https://orbi.uliege.be/handle/2268/211288 info:hdl:2268/211288 https://orbi.uliege.be/bitstream/2268/211288/1/Poster_IRWG2017.pdf open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess IRWG-TCCON meeting 2017, Paris, France [FR], du 29 mai 2017 au 2 juin 2017 stratosphere circulation changes Climate chemistry Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique conference poster not in proceedings http://purl.org/coar/resource_type/c_18co info:eu-repo/semantics/conferencePoster 2017 ftorbi 2024-09-27T07:01:57Z Hydrogen fluoride is mainly produced by the photolysis of anthropogenic source gases such as the chlorofluorocarbons (CFC), the hydrochlorofluorocarbons (HCFC) and the hydrofluorocarbons (HFC). These families of species are known for contributing to ozone depletion and/or to the greenhouse effect. It is thus essential to regulate and monitor their emissions. Despite the fact that the Montreal protocol (1987) has succeeded to reduce and then suppress the CFC emissions, HF is still increasing in the stratosphere because of ongoing emissions of the HCFC and HFC substitution products. In the framework of the recent studies demonstrating the influence of stratospheric circulation changes on the trend of long-lived tracers (e.g. hydrogen chlorine), we decided to investigate the impact of these circulation changes on HF. To achieve this objective, the rates of changes over time of HF total/partial columns at various latitudes of the globe will be determined and critically discussed. Fourier Transform Infrared data produced at five NDACC sites (Kiruna – 68°N, Jungfraujoch – 46°N, Izana – 28°N, Lauder 45°S and Arrival-heights – 78°S) and satellite data (HALOE and ACE) will be used for this study. This preliminary selection of ground-based stations allows to cover both hemispheres and our period of investigation (last two decades). Finally, in order to support our data interpretation, two SLIMCAT simulations (standard and fixed dynamics) will also be included. ACCROSS Conference Object Kiruna University of Liège: ORBi (Open Repository and Bibliography) Arrival Heights ENVELOPE(166.650,166.650,-77.817,-77.817) Kiruna |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
stratosphere circulation changes Climate chemistry Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
stratosphere circulation changes Climate chemistry Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Prignon, Maxime Bernath, P.F. Blumenstock, T. Chipperfield, M.P. Hase, F. Schneider, M. Smale, D. Walker, W.A. Chabrillat, S. Servais, Christian Mahieu, Emmanuel Impact of circulation changes on the long-term trend of stratospheric hydrogen fluoride at five NDACC stations |
topic_facet |
stratosphere circulation changes Climate chemistry Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
Hydrogen fluoride is mainly produced by the photolysis of anthropogenic source gases such as the chlorofluorocarbons (CFC), the hydrochlorofluorocarbons (HCFC) and the hydrofluorocarbons (HFC). These families of species are known for contributing to ozone depletion and/or to the greenhouse effect. It is thus essential to regulate and monitor their emissions. Despite the fact that the Montreal protocol (1987) has succeeded to reduce and then suppress the CFC emissions, HF is still increasing in the stratosphere because of ongoing emissions of the HCFC and HFC substitution products. In the framework of the recent studies demonstrating the influence of stratospheric circulation changes on the trend of long-lived tracers (e.g. hydrogen chlorine), we decided to investigate the impact of these circulation changes on HF. To achieve this objective, the rates of changes over time of HF total/partial columns at various latitudes of the globe will be determined and critically discussed. Fourier Transform Infrared data produced at five NDACC sites (Kiruna – 68°N, Jungfraujoch – 46°N, Izana – 28°N, Lauder 45°S and Arrival-heights – 78°S) and satellite data (HALOE and ACE) will be used for this study. This preliminary selection of ground-based stations allows to cover both hemispheres and our period of investigation (last two decades). Finally, in order to support our data interpretation, two SLIMCAT simulations (standard and fixed dynamics) will also be included. ACCROSS |
format |
Conference Object |
author |
Prignon, Maxime Bernath, P.F. Blumenstock, T. Chipperfield, M.P. Hase, F. Schneider, M. Smale, D. Walker, W.A. Chabrillat, S. Servais, Christian Mahieu, Emmanuel |
author_facet |
Prignon, Maxime Bernath, P.F. Blumenstock, T. Chipperfield, M.P. Hase, F. Schneider, M. Smale, D. Walker, W.A. Chabrillat, S. Servais, Christian Mahieu, Emmanuel |
author_sort |
Prignon, Maxime |
title |
Impact of circulation changes on the long-term trend of stratospheric hydrogen fluoride at five NDACC stations |
title_short |
Impact of circulation changes on the long-term trend of stratospheric hydrogen fluoride at five NDACC stations |
title_full |
Impact of circulation changes on the long-term trend of stratospheric hydrogen fluoride at five NDACC stations |
title_fullStr |
Impact of circulation changes on the long-term trend of stratospheric hydrogen fluoride at five NDACC stations |
title_full_unstemmed |
Impact of circulation changes on the long-term trend of stratospheric hydrogen fluoride at five NDACC stations |
title_sort |
impact of circulation changes on the long-term trend of stratospheric hydrogen fluoride at five ndacc stations |
publishDate |
2017 |
url |
https://orbi.uliege.be/handle/2268/211288 https://orbi.uliege.be/bitstream/2268/211288/1/Poster_IRWG2017.pdf |
long_lat |
ENVELOPE(166.650,166.650,-77.817,-77.817) |
geographic |
Arrival Heights Kiruna |
geographic_facet |
Arrival Heights Kiruna |
genre |
Kiruna |
genre_facet |
Kiruna |
op_source |
IRWG-TCCON meeting 2017, Paris, France [FR], du 29 mai 2017 au 2 juin 2017 |
op_relation |
https://orbi.uliege.be/handle/2268/211288 info:hdl:2268/211288 https://orbi.uliege.be/bitstream/2268/211288/1/Poster_IRWG2017.pdf |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
_version_ |
1813449717192851456 |