Nitrate deposition and preservation in the snowpack along a traverse from coast to the ice sheet summit (Dome A) in East Antarctica
Antarctic ice core nitrate (NO 3-) can provide a unique record of the atmospheric reactive nitrogen cycle. However, the factors influencing the deposition and preservation of NO 3- at the ice sheet surface must first be understood. Therefore, an intensive program of snow and atmospheric sampling was...
Published in: | The Cryosphere |
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Copernicus Publications
2018
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00006867 2023-05-15T13:34:49+02:00 Nitrate deposition and preservation in the snowpack along a traverse from coast to the ice sheet summit (Dome A) in East Antarctica Shi, Guitao Hastings, Meredith G. Yu, Jinhai Ma, Tianming Hu, Zhengyi An, Chunlei Li, Chuanjin Ma, Hongmei Jiang, Su Li, Yuansheng 2018-04 electronic https://doi.org/10.5194/tc-12-1177-2018 https://noa.gwlb.de/receive/cop_mods_00006867 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00006824/tc-12-1177-2018.pdf https://tc.copernicus.org/articles/12/1177/2018/tc-12-1177-2018.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-12-1177-2018 https://noa.gwlb.de/receive/cop_mods_00006867 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00006824/tc-12-1177-2018.pdf https://tc.copernicus.org/articles/12/1177/2018/tc-12-1177-2018.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2018 ftnonlinearchiv https://doi.org/10.5194/tc-12-1177-2018 2022-02-08T22:58:50Z Antarctic ice core nitrate (NO 3-) can provide a unique record of the atmospheric reactive nitrogen cycle. However, the factors influencing the deposition and preservation of NO 3- at the ice sheet surface must first be understood. Therefore, an intensive program of snow and atmospheric sampling was made on a traverse from the coast to the ice sheet summit, Dome A, East Antarctica. Snow samples in this observation include 120 surface snow samples (top ∼ 3 cm), 20 snow pits with depths of 150 to 300 cm, and 6 crystal ice samples (the topmost needle-like layer on Dome A plateau). The main purpose of this investigation is to characterize the distribution pattern and preservation of NO 3- concentrations in the snow in different environments. Results show that an increasing trend of NO 3- concentrations with distance inland is present in surface snow, and NO 3- is extremely enriched in the topmost crystal ice (with a maximum of 16.1 µeq L−1). NO 3- concentration profiles for snow pits vary between coastal and inland sites. On the coast, the deposited NO 3- was largely preserved, and the archived NO 3- fluxes are dominated by snow accumulation. The relationship between the archived NO 3- and snow accumulation rate can be depicted well by a linear model, suggesting a homogeneity of atmospheric NO 3- levels. It is estimated that dry deposition contributes 27–44 % of the archived NO 3- fluxes, and the dry deposition velocity and scavenging ratio for NO 3- were relatively constant near the coast. Compared to the coast, the inland snow shows a relatively weak correlation between archived NO 3- and snow accumulation, and the archived NO 3- fluxes were more dependent on concentration. The relationship between NO 3- and coexisting ions (nssSO 42-, Na+ and Cl−) was also investigated, and the results show a correlation between nssSO 42- (fine aerosol particles) and NO 3- in surface snow, while the correlation between NO 3- and Na+ (mainly associated with coarse aerosol particles) is not significant. In inland snow, there were no significant relationships found between NO 3- and the coexisting ions, suggesting a dominant role of NO 3- recycling in determining the concentrations. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet The Cryosphere Niedersächsisches Online-Archiv NOA Antarctic East Antarctica The Cryosphere 12 4 1177 1194 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Shi, Guitao Hastings, Meredith G. Yu, Jinhai Ma, Tianming Hu, Zhengyi An, Chunlei Li, Chuanjin Ma, Hongmei Jiang, Su Li, Yuansheng Nitrate deposition and preservation in the snowpack along a traverse from coast to the ice sheet summit (Dome A) in East Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
Antarctic ice core nitrate (NO 3-) can provide a unique record of the atmospheric reactive nitrogen cycle. However, the factors influencing the deposition and preservation of NO 3- at the ice sheet surface must first be understood. Therefore, an intensive program of snow and atmospheric sampling was made on a traverse from the coast to the ice sheet summit, Dome A, East Antarctica. Snow samples in this observation include 120 surface snow samples (top ∼ 3 cm), 20 snow pits with depths of 150 to 300 cm, and 6 crystal ice samples (the topmost needle-like layer on Dome A plateau). The main purpose of this investigation is to characterize the distribution pattern and preservation of NO 3- concentrations in the snow in different environments. Results show that an increasing trend of NO 3- concentrations with distance inland is present in surface snow, and NO 3- is extremely enriched in the topmost crystal ice (with a maximum of 16.1 µeq L−1). NO 3- concentration profiles for snow pits vary between coastal and inland sites. On the coast, the deposited NO 3- was largely preserved, and the archived NO 3- fluxes are dominated by snow accumulation. The relationship between the archived NO 3- and snow accumulation rate can be depicted well by a linear model, suggesting a homogeneity of atmospheric NO 3- levels. It is estimated that dry deposition contributes 27–44 % of the archived NO 3- fluxes, and the dry deposition velocity and scavenging ratio for NO 3- were relatively constant near the coast. Compared to the coast, the inland snow shows a relatively weak correlation between archived NO 3- and snow accumulation, and the archived NO 3- fluxes were more dependent on concentration. The relationship between NO 3- and coexisting ions (nssSO 42-, Na+ and Cl−) was also investigated, and the results show a correlation between nssSO 42- (fine aerosol particles) and NO 3- in surface snow, while the correlation between NO 3- and Na+ (mainly associated with coarse aerosol particles) is not significant. In inland snow, there were no significant relationships found between NO 3- and the coexisting ions, suggesting a dominant role of NO 3- recycling in determining the concentrations. |
format |
Article in Journal/Newspaper |
author |
Shi, Guitao Hastings, Meredith G. Yu, Jinhai Ma, Tianming Hu, Zhengyi An, Chunlei Li, Chuanjin Ma, Hongmei Jiang, Su Li, Yuansheng |
author_facet |
Shi, Guitao Hastings, Meredith G. Yu, Jinhai Ma, Tianming Hu, Zhengyi An, Chunlei Li, Chuanjin Ma, Hongmei Jiang, Su Li, Yuansheng |
author_sort |
Shi, Guitao |
title |
Nitrate deposition and preservation in the snowpack along a traverse from coast to the ice sheet summit (Dome A) in East Antarctica |
title_short |
Nitrate deposition and preservation in the snowpack along a traverse from coast to the ice sheet summit (Dome A) in East Antarctica |
title_full |
Nitrate deposition and preservation in the snowpack along a traverse from coast to the ice sheet summit (Dome A) in East Antarctica |
title_fullStr |
Nitrate deposition and preservation in the snowpack along a traverse from coast to the ice sheet summit (Dome A) in East Antarctica |
title_full_unstemmed |
Nitrate deposition and preservation in the snowpack along a traverse from coast to the ice sheet summit (Dome A) in East Antarctica |
title_sort |
nitrate deposition and preservation in the snowpack along a traverse from coast to the ice sheet summit (dome a) in east antarctica |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-12-1177-2018 https://noa.gwlb.de/receive/cop_mods_00006867 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00006824/tc-12-1177-2018.pdf https://tc.copernicus.org/articles/12/1177/2018/tc-12-1177-2018.pdf |
geographic |
Antarctic East Antarctica |
geographic_facet |
Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-12-1177-2018 https://noa.gwlb.de/receive/cop_mods_00006867 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00006824/tc-12-1177-2018.pdf https://tc.copernicus.org/articles/12/1177/2018/tc-12-1177-2018.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-12-1177-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
4 |
container_start_page |
1177 |
op_container_end_page |
1194 |
_version_ |
1766058148231118848 |