Halogen emissions from a small volcanic eruption: modeling the peak concentrations, dispersion, and volcanically induced ozone loss in the stratosphere
Aircraft measurements in the Hekla, Iceland volcanic plume in February 2000 revealed large quantities of hydrogen halides within the stratosphere correlated to volcanic SO₂. Investigation of the longer-term stratospheric impact of these emissions, using the 3D chemical transport model, SLIMCAT sugge...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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American Geophysical Union
2016
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Online Access: | https://doi.org/10.1029/2006GL026959 https://ora.ox.ac.uk/objects/uuid:0a91861c-14b7-49ce-9c19-9e919f29940d |
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ftuloxford:oai:ora.ox.ac.uk:uuid:0a91861c-14b7-49ce-9c19-9e919f29940d 2024-09-30T14:36:14+00:00 Halogen emissions from a small volcanic eruption: modeling the peak concentrations, dispersion, and volcanically induced ozone loss in the stratosphere Millard, G Mather, T Pyle, D Rose, W Thornton, B 2016-07-28 https://doi.org/10.1029/2006GL026959 https://ora.ox.ac.uk/objects/uuid:0a91861c-14b7-49ce-9c19-9e919f29940d eng eng American Geophysical Union doi:10.1029/2006GL026959 https://ora.ox.ac.uk/objects/uuid:0a91861c-14b7-49ce-9c19-9e919f29940d https://doi.org/10.1029/2006GL026959 info:eu-repo/semantics/openAccess Earth sciences Journal article 2016 ftuloxford https://doi.org/10.1029/2006GL026959 2024-09-06T07:47:27Z Aircraft measurements in the Hekla, Iceland volcanic plume in February 2000 revealed large quantities of hydrogen halides within the stratosphere correlated to volcanic SO₂. Investigation of the longer-term stratospheric impact of these emissions, using the 3D chemical transport model, SLIMCAT suggests that volcanic enhancements of H₂O and HNO₃ increased HNO₂ 3H₂O particle availability within the plume. These particles activated volcanic HCI and HBr, enhancing model plume concentrations of ClOₓ (20 ppb) and BrOₓ (50 ppt). Model O₃ concentrations decreased to near-zero in places, and plume average O₃ remained 30% lower after two weeks. Reductions in the model O₃ column reduced UV shielding by 15% for 2 days. Plume incorporation into the winter polar vortex after 1 March elevated model vortex Cl[sub>y and Br[sub>y by 0.15 ppb and 7 ppt respectively, and doubled vortex ClOₓ and BrO. Model results agree quantitatively with the observations made by the DC-8 aircraft. Article in Journal/Newspaper Hekla Iceland ORA - Oxford University Research Archive Geophysical Research Letters 33 19 |
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Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
English |
topic |
Earth sciences |
spellingShingle |
Earth sciences Millard, G Mather, T Pyle, D Rose, W Thornton, B Halogen emissions from a small volcanic eruption: modeling the peak concentrations, dispersion, and volcanically induced ozone loss in the stratosphere |
topic_facet |
Earth sciences |
description |
Aircraft measurements in the Hekla, Iceland volcanic plume in February 2000 revealed large quantities of hydrogen halides within the stratosphere correlated to volcanic SO₂. Investigation of the longer-term stratospheric impact of these emissions, using the 3D chemical transport model, SLIMCAT suggests that volcanic enhancements of H₂O and HNO₃ increased HNO₂ 3H₂O particle availability within the plume. These particles activated volcanic HCI and HBr, enhancing model plume concentrations of ClOₓ (20 ppb) and BrOₓ (50 ppt). Model O₃ concentrations decreased to near-zero in places, and plume average O₃ remained 30% lower after two weeks. Reductions in the model O₃ column reduced UV shielding by 15% for 2 days. Plume incorporation into the winter polar vortex after 1 March elevated model vortex Cl[sub>y and Br[sub>y by 0.15 ppb and 7 ppt respectively, and doubled vortex ClOₓ and BrO. Model results agree quantitatively with the observations made by the DC-8 aircraft. |
format |
Article in Journal/Newspaper |
author |
Millard, G Mather, T Pyle, D Rose, W Thornton, B |
author_facet |
Millard, G Mather, T Pyle, D Rose, W Thornton, B |
author_sort |
Millard, G |
title |
Halogen emissions from a small volcanic eruption: modeling the peak concentrations, dispersion, and volcanically induced ozone loss in the stratosphere |
title_short |
Halogen emissions from a small volcanic eruption: modeling the peak concentrations, dispersion, and volcanically induced ozone loss in the stratosphere |
title_full |
Halogen emissions from a small volcanic eruption: modeling the peak concentrations, dispersion, and volcanically induced ozone loss in the stratosphere |
title_fullStr |
Halogen emissions from a small volcanic eruption: modeling the peak concentrations, dispersion, and volcanically induced ozone loss in the stratosphere |
title_full_unstemmed |
Halogen emissions from a small volcanic eruption: modeling the peak concentrations, dispersion, and volcanically induced ozone loss in the stratosphere |
title_sort |
halogen emissions from a small volcanic eruption: modeling the peak concentrations, dispersion, and volcanically induced ozone loss in the stratosphere |
publisher |
American Geophysical Union |
publishDate |
2016 |
url |
https://doi.org/10.1029/2006GL026959 https://ora.ox.ac.uk/objects/uuid:0a91861c-14b7-49ce-9c19-9e919f29940d |
genre |
Hekla Iceland |
genre_facet |
Hekla Iceland |
op_relation |
doi:10.1029/2006GL026959 https://ora.ox.ac.uk/objects/uuid:0a91861c-14b7-49ce-9c19-9e919f29940d https://doi.org/10.1029/2006GL026959 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2006GL026959 |
container_title |
Geophysical Research Letters |
container_volume |
33 |
container_issue |
19 |
_version_ |
1811639347236044800 |