Relationship between Continuous Aerosol Measurements and Firn Core Chemistry over a 10â€year Period at the South Pole
Before ice core chemistry can be used to estimate past atmospheric chemistry it is necessary to establish an unambiguous link between concentrations of chemical species in the air and snow. For the first time a continuous longâ€term record of aerosol properties (aerosol light scattering coefficient,...
Published in: | Geophysical Research Letters |
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1996
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ftmaineuniv:oai:digitalcommons.library.umaine.edu:ers_facpub-1195 2024-09-15T18:12:01+00:00 Relationship between Continuous Aerosol Measurements and Firn Core Chemistry over a 10â€year Period at the South Pole Bergin, M. H. Meyerson, E. A. Dibb, J. E. Mayewski, Paul Andrew 1996-09-01T07:00:00Z application/pdf https://digitalcommons.library.umaine.edu/ers_facpub/195 https://doi.org/10.1029/98GL00854 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1195/viewcontent/relationship_continuous_aerosol.pdf unknown DigitalCommons@UMaine https://digitalcommons.library.umaine.edu/ers_facpub/195 doi:10.1029/98GL00854 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1195/viewcontent/relationship_continuous_aerosol.pdf This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). Earth Science Faculty Scholarship Glaciogeology Geochemistry Glaciology Cryology Climate Change Climate Earth Sciences Hydrology text 1996 ftmaineuniv https://doi.org/10.1029/98GL00854 2024-07-24T05:38:40Z Before ice core chemistry can be used to estimate past atmospheric chemistry it is necessary to establish an unambiguous link between concentrations of chemical species in the air and snow. For the first time a continuous longâ€term record of aerosol properties (aerosol light scattering coefficient, σsp , and Ã…ngström exponent, Ã¥) at the South Pole are compared with the chemical record from a high resolution firn core (∼10 samples per year) covering the period from 1981 to 1991. Seasonal signals in Ã¥, associated with winter minima due to coarse mode seasalt and summer maxima due to accumulation mode sulfate aerosol, are reflected in the firn core SO42−/Na+ concentration ratio. Summertime ratios of σsp and aerosol optical depth, Ï„ to corresponding firn core sulfur concentrations are determined and the ‘calibrations’ are applied to sulfur concentrations in snowpits from a previous study. Results show that σsp estimates from snowpit sulfur concentrations are in agreement with atmospheric measurements while Ï„ estimates are significantly different, which is likely due to the lack of understanding of the processes that mix surface air with air aloft. Text ice core South pole The University of Maine: DigitalCommons@UMaine Geophysical Research Letters 25 8 1189 1192 |
institution |
Open Polar |
collection |
The University of Maine: DigitalCommons@UMaine |
op_collection_id |
ftmaineuniv |
language |
unknown |
topic |
Glaciogeology Geochemistry Glaciology Cryology Climate Change Climate Earth Sciences Hydrology |
spellingShingle |
Glaciogeology Geochemistry Glaciology Cryology Climate Change Climate Earth Sciences Hydrology Bergin, M. H. Meyerson, E. A. Dibb, J. E. Mayewski, Paul Andrew Relationship between Continuous Aerosol Measurements and Firn Core Chemistry over a 10â€year Period at the South Pole |
topic_facet |
Glaciogeology Geochemistry Glaciology Cryology Climate Change Climate Earth Sciences Hydrology |
description |
Before ice core chemistry can be used to estimate past atmospheric chemistry it is necessary to establish an unambiguous link between concentrations of chemical species in the air and snow. For the first time a continuous longâ€term record of aerosol properties (aerosol light scattering coefficient, σsp , and Ã…ngström exponent, Ã¥) at the South Pole are compared with the chemical record from a high resolution firn core (∼10 samples per year) covering the period from 1981 to 1991. Seasonal signals in Ã¥, associated with winter minima due to coarse mode seasalt and summer maxima due to accumulation mode sulfate aerosol, are reflected in the firn core SO42−/Na+ concentration ratio. Summertime ratios of σsp and aerosol optical depth, Ï„ to corresponding firn core sulfur concentrations are determined and the ‘calibrations’ are applied to sulfur concentrations in snowpits from a previous study. Results show that σsp estimates from snowpit sulfur concentrations are in agreement with atmospheric measurements while Ï„ estimates are significantly different, which is likely due to the lack of understanding of the processes that mix surface air with air aloft. |
format |
Text |
author |
Bergin, M. H. Meyerson, E. A. Dibb, J. E. Mayewski, Paul Andrew |
author_facet |
Bergin, M. H. Meyerson, E. A. Dibb, J. E. Mayewski, Paul Andrew |
author_sort |
Bergin, M. H. |
title |
Relationship between Continuous Aerosol Measurements and Firn Core Chemistry over a 10â€year Period at the South Pole |
title_short |
Relationship between Continuous Aerosol Measurements and Firn Core Chemistry over a 10â€year Period at the South Pole |
title_full |
Relationship between Continuous Aerosol Measurements and Firn Core Chemistry over a 10â€year Period at the South Pole |
title_fullStr |
Relationship between Continuous Aerosol Measurements and Firn Core Chemistry over a 10â€year Period at the South Pole |
title_full_unstemmed |
Relationship between Continuous Aerosol Measurements and Firn Core Chemistry over a 10â€year Period at the South Pole |
title_sort |
relationship between continuous aerosol measurements and firn core chemistry over a 10â€year period at the south pole |
publisher |
DigitalCommons@UMaine |
publishDate |
1996 |
url |
https://digitalcommons.library.umaine.edu/ers_facpub/195 https://doi.org/10.1029/98GL00854 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1195/viewcontent/relationship_continuous_aerosol.pdf |
genre |
ice core South pole |
genre_facet |
ice core South pole |
op_source |
Earth Science Faculty Scholarship |
op_relation |
https://digitalcommons.library.umaine.edu/ers_facpub/195 doi:10.1029/98GL00854 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1195/viewcontent/relationship_continuous_aerosol.pdf |
op_rights |
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). |
op_doi |
https://doi.org/10.1029/98GL00854 |
container_title |
Geophysical Research Letters |
container_volume |
25 |
container_issue |
8 |
container_start_page |
1189 |
op_container_end_page |
1192 |
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1810449605107646464 |