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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Language: | English |
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Online Access: | https://doi.org/10.1029/2006GL026959 https://ora.ox.ac.uk/objects/uuid:bb67afd3-cbd6-4fce-a081-368d12aeadad |
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ftuloxford:oai:ora.ox.ac.uk:uuid:bb67afd3-cbd6-4fce-a081-368d12aeadad 2023-05-15T16:34:03+02:00 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 2016-07-29 https://doi.org/10.1029/2006GL026959 https://ora.ox.ac.uk/objects/uuid:bb67afd3-cbd6-4fce-a081-368d12aeadad eng eng doi:10.1029/2006GL026959 https://ora.ox.ac.uk/objects/uuid:bb67afd3-cbd6-4fce-a081-368d12aeadad https://doi.org/10.1029/2006GL026959 info:eu-repo/semantics/embargoedAccess Journal article 2016 ftuloxford https://doi.org/10.1029/2006GL026959 2022-06-28T20:22:25Z 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 HNO 3 increased HNO3·3H2O particle availability within the plume. These particles activated volcanic HCl and HBr, enhancing model plume concentrations of ClOx (20 ppb) and BrO x (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 Cly and Bry 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. Copyright 2006 by the American Geophysical Union. Article in Journal/Newspaper Hekla Iceland ORA - Oxford University Research Archive Geophysical Research Letters 33 19 |
institution |
Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
English |
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 HNO 3 increased HNO3·3H2O particle availability within the plume. These particles activated volcanic HCl and HBr, enhancing model plume concentrations of ClOx (20 ppb) and BrO x (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 Cly and Bry 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. Copyright 2006 by the American Geophysical Union. |
format |
Article in Journal/Newspaper |
author |
Millard, G Mather, T Pyle, D Rose, W Thornton, B |
spellingShingle |
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 |
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 |
publishDate |
2016 |
url |
https://doi.org/10.1029/2006GL026959 https://ora.ox.ac.uk/objects/uuid:bb67afd3-cbd6-4fce-a081-368d12aeadad |
genre |
Hekla Iceland |
genre_facet |
Hekla Iceland |
op_relation |
doi:10.1029/2006GL026959 https://ora.ox.ac.uk/objects/uuid:bb67afd3-cbd6-4fce-a081-368d12aeadad https://doi.org/10.1029/2006GL026959 |
op_rights |
info:eu-repo/semantics/embargoedAccess |
op_doi |
https://doi.org/10.1029/2006GL026959 |
container_title |
Geophysical Research Letters |
container_volume |
33 |
container_issue |
19 |
_version_ |
1766023794923667456 |