A spatial framework for assessing current conditions and monitoring future change in the chemistry of the Antarctic atmosphere
This is the first study to measure more than 25 chemical constituents in the surface snow and firn across extensive regions of Antarctica. It is also the first to report total- Cs concentrations. We present major ion, trace element, heavy metal, rare earth element 5 and oxygen isotope data from a se...
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ftmaineuniv:oai:digitalcommons.library.umaine.edu:ers_facpub-1170 2024-09-15T17:44:21+00:00 A spatial framework for assessing current conditions and monitoring future change in the chemistry of the Antarctic atmosphere Dixon, D. A. Mayewski, Paul Andrew Korotkikh, E. Sneed, S. B. Handley, M. J. Introne, D. S. Scambos, T. A. 2011-01-01T08:00:00Z application/pdf https://digitalcommons.library.umaine.edu/ers_facpub/171 https://doi.org/10.5194/tcd-5-885-2011 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1170/viewcontent/tcd_5_885_2011.pdf unknown DigitalCommons@UMaine https://digitalcommons.library.umaine.edu/ers_facpub/171 doi:doi:10.5194/tcd-5-885-2011 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1170/viewcontent/tcd_5_885_2011.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). http://creativecommons.org/licenses/by/3.0/ Earth Science Faculty Scholarship Antarctic surface snow chemical concentrations Earth Sciences Geochemistry text 2011 ftmaineuniv https://doi.org/10.5194/tcd-5-885-2011 2024-07-24T05:38:40Z This is the first study to measure more than 25 chemical constituents in the surface snow and firn across extensive regions of Antarctica. It is also the first to report total- Cs concentrations. We present major ion, trace element, heavy metal, rare earth element 5 and oxygen isotope data from a series of surface snow samples and shallow firn sections collected along four US ITASE traverses across East and West Antarctica. In each sample we measure dissolved concentrations of Na+, K+, Mg2+, Ca2+, Cl−, NO− 3 , SO2− 4 , and MS− using ion chromatography and total concentrations of Sr, Cd, Cs, Ba, La, Ce, Pr, Pb, Bi, U, As, Al, S, Ca, Ti, V, Cr, Mn, Fe, Co, Na, Mg, Li, and K using 10 inductively coupled plasma sector field mass spectrometry. We also measure 18O by isotope ratio mass spectrometry. The 2002/2003 traverse began at Byrd Surface Camp, West Antarctica, and ended close to South Pole, East Antarctica. The 2003/2004 traverse began at South Pole, passed through AGO4 in central East Antarctica before turning north and finishing at 15 Taylor Dome. The combined 2006/2007 and 2007/2008 traverses started out at Taylor Dome and headed south, passing through the Byrd Glacier drainage basin and ending at South Pole. In this study, we utilize satellite remote sensing measurements of microwave backscatter and grain size to assist in the identification of glaze/dune areas across 20 Antarctica and show how chemical concentrations are higher in these areas, precluding them from containing useful high-resolution chemical climate records. The majority of the non-glaze/dune samples in this study exhibit similar, or lower, concentrations to those from previous studies. Consequently, the results presented here comprise a conservative baseline for Antarctic surface snow chemical concentra25 tions. The elements Cd, Pb, Bi, As, and Li are enriched across Antarctica relative to both ocean and upper crust elemental ratios. Global volcanic outgassing accounts for the majority of the Bi measured in East and West Antarctica ... Text Antarc* Antarctic Antarctica Byrd Glacier East Antarctica South pole South pole West Antarctica The University of Maine: DigitalCommons@UMaine |
institution |
Open Polar |
collection |
The University of Maine: DigitalCommons@UMaine |
op_collection_id |
ftmaineuniv |
language |
unknown |
topic |
Antarctic surface snow chemical concentrations Earth Sciences Geochemistry |
spellingShingle |
Antarctic surface snow chemical concentrations Earth Sciences Geochemistry Dixon, D. A. Mayewski, Paul Andrew Korotkikh, E. Sneed, S. B. Handley, M. J. Introne, D. S. Scambos, T. A. A spatial framework for assessing current conditions and monitoring future change in the chemistry of the Antarctic atmosphere |
topic_facet |
Antarctic surface snow chemical concentrations Earth Sciences Geochemistry |
description |
This is the first study to measure more than 25 chemical constituents in the surface snow and firn across extensive regions of Antarctica. It is also the first to report total- Cs concentrations. We present major ion, trace element, heavy metal, rare earth element 5 and oxygen isotope data from a series of surface snow samples and shallow firn sections collected along four US ITASE traverses across East and West Antarctica. In each sample we measure dissolved concentrations of Na+, K+, Mg2+, Ca2+, Cl−, NO− 3 , SO2− 4 , and MS− using ion chromatography and total concentrations of Sr, Cd, Cs, Ba, La, Ce, Pr, Pb, Bi, U, As, Al, S, Ca, Ti, V, Cr, Mn, Fe, Co, Na, Mg, Li, and K using 10 inductively coupled plasma sector field mass spectrometry. We also measure 18O by isotope ratio mass spectrometry. The 2002/2003 traverse began at Byrd Surface Camp, West Antarctica, and ended close to South Pole, East Antarctica. The 2003/2004 traverse began at South Pole, passed through AGO4 in central East Antarctica before turning north and finishing at 15 Taylor Dome. The combined 2006/2007 and 2007/2008 traverses started out at Taylor Dome and headed south, passing through the Byrd Glacier drainage basin and ending at South Pole. In this study, we utilize satellite remote sensing measurements of microwave backscatter and grain size to assist in the identification of glaze/dune areas across 20 Antarctica and show how chemical concentrations are higher in these areas, precluding them from containing useful high-resolution chemical climate records. The majority of the non-glaze/dune samples in this study exhibit similar, or lower, concentrations to those from previous studies. Consequently, the results presented here comprise a conservative baseline for Antarctic surface snow chemical concentra25 tions. The elements Cd, Pb, Bi, As, and Li are enriched across Antarctica relative to both ocean and upper crust elemental ratios. Global volcanic outgassing accounts for the majority of the Bi measured in East and West Antarctica ... |
format |
Text |
author |
Dixon, D. A. Mayewski, Paul Andrew Korotkikh, E. Sneed, S. B. Handley, M. J. Introne, D. S. Scambos, T. A. |
author_facet |
Dixon, D. A. Mayewski, Paul Andrew Korotkikh, E. Sneed, S. B. Handley, M. J. Introne, D. S. Scambos, T. A. |
author_sort |
Dixon, D. A. |
title |
A spatial framework for assessing current conditions and monitoring future change in the chemistry of the Antarctic atmosphere |
title_short |
A spatial framework for assessing current conditions and monitoring future change in the chemistry of the Antarctic atmosphere |
title_full |
A spatial framework for assessing current conditions and monitoring future change in the chemistry of the Antarctic atmosphere |
title_fullStr |
A spatial framework for assessing current conditions and monitoring future change in the chemistry of the Antarctic atmosphere |
title_full_unstemmed |
A spatial framework for assessing current conditions and monitoring future change in the chemistry of the Antarctic atmosphere |
title_sort |
spatial framework for assessing current conditions and monitoring future change in the chemistry of the antarctic atmosphere |
publisher |
DigitalCommons@UMaine |
publishDate |
2011 |
url |
https://digitalcommons.library.umaine.edu/ers_facpub/171 https://doi.org/10.5194/tcd-5-885-2011 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1170/viewcontent/tcd_5_885_2011.pdf |
genre |
Antarc* Antarctic Antarctica Byrd Glacier East Antarctica South pole South pole West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Byrd Glacier East Antarctica South pole South pole West Antarctica |
op_source |
Earth Science Faculty Scholarship |
op_relation |
https://digitalcommons.library.umaine.edu/ers_facpub/171 doi:doi:10.5194/tcd-5-885-2011 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1170/viewcontent/tcd_5_885_2011.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). http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.5194/tcd-5-885-2011 |
_version_ |
1810491837052354560 |