Nitrate records of a shallow ice core from East Antarctica: Atmospheric processes, preservation and climatic implications
High-resolution records of nitrate (NO sub(3) sup(-)), oxygen isotope (delta sup(18) O) and non-sea salt sulphate (nssSO sub(4) sup(2-)) were studied using an ice core collected from central Dronning Maud Land in East Antarctica to identify the influence of environmental variability on accumulation...
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ftnio:oai:dsr.nio.org:2264/3806 2023-05-15T13:59:28+02:00 Nitrate records of a shallow ice core from East Antarctica: Atmospheric processes, preservation and climatic implications Laluraj, C.M. Thamban, M. Naik, S.S. Redkar, B.L. Chaturvedi, A. Ravindra, R. 2011 http://drs.nio.org/drs/handle/2264/3806 en eng SAGE Publications © The Author(s) 2010. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository nitrate records oxygen isotope Antarctica nitrogen species Journal Article 2011 ftnio 2012-08-25T20:09:57Z High-resolution records of nitrate (NO sub(3) sup(-)), oxygen isotope (delta sup(18) O) and non-sea salt sulphate (nssSO sub(4) sup(2-)) were studied using an ice core collected from central Dronning Maud Land in East Antarctica to identify the influence of environmental variability on accumulation of NO sub(3) sup(-) over the past 450 years. The results confirmed that multiple processes were responsible for the production and preservation of NO sub(3) sup(-) in Antarctic ice. Correlation between NO sub(3) sup(-) and nssSO sub(4) sup(2-) peaks revealed that sulphate aerosols released during major volcanic eruptions might have activated the production of nitric acid, which was scavenged by ion-induced nucleation in polar ice sheets. The correlation between the nitrate and delta sup(18) O records further suggest that enhanced NO sub(3) sup(-) preservation in the ice occurred during periods of lower atmospheric temperature. Major shifts in the NO sub(3) sup(-) record of the ice core presently studied and its comparison with 10Be record from a core collected from South Pole suggest that a reduction in solar activity influenced the NO sub(3) sup(-) accumulation in Antarctica through enhanced production of odd nitrogen species Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica ice core South pole South pole National Institute of Oceanography, India: Digital Repository Service (DRS@nio) Antarctic Dronning Maud Land East Antarctica South Pole |
institution |
Open Polar |
collection |
National Institute of Oceanography, India: Digital Repository Service (DRS@nio) |
op_collection_id |
ftnio |
language |
English |
topic |
nitrate records oxygen isotope Antarctica nitrogen species |
spellingShingle |
nitrate records oxygen isotope Antarctica nitrogen species Laluraj, C.M. Thamban, M. Naik, S.S. Redkar, B.L. Chaturvedi, A. Ravindra, R. Nitrate records of a shallow ice core from East Antarctica: Atmospheric processes, preservation and climatic implications |
topic_facet |
nitrate records oxygen isotope Antarctica nitrogen species |
description |
High-resolution records of nitrate (NO sub(3) sup(-)), oxygen isotope (delta sup(18) O) and non-sea salt sulphate (nssSO sub(4) sup(2-)) were studied using an ice core collected from central Dronning Maud Land in East Antarctica to identify the influence of environmental variability on accumulation of NO sub(3) sup(-) over the past 450 years. The results confirmed that multiple processes were responsible for the production and preservation of NO sub(3) sup(-) in Antarctic ice. Correlation between NO sub(3) sup(-) and nssSO sub(4) sup(2-) peaks revealed that sulphate aerosols released during major volcanic eruptions might have activated the production of nitric acid, which was scavenged by ion-induced nucleation in polar ice sheets. The correlation between the nitrate and delta sup(18) O records further suggest that enhanced NO sub(3) sup(-) preservation in the ice occurred during periods of lower atmospheric temperature. Major shifts in the NO sub(3) sup(-) record of the ice core presently studied and its comparison with 10Be record from a core collected from South Pole suggest that a reduction in solar activity influenced the NO sub(3) sup(-) accumulation in Antarctica through enhanced production of odd nitrogen species |
format |
Article in Journal/Newspaper |
author |
Laluraj, C.M. Thamban, M. Naik, S.S. Redkar, B.L. Chaturvedi, A. Ravindra, R. |
author_facet |
Laluraj, C.M. Thamban, M. Naik, S.S. Redkar, B.L. Chaturvedi, A. Ravindra, R. |
author_sort |
Laluraj, C.M. |
title |
Nitrate records of a shallow ice core from East Antarctica: Atmospheric processes, preservation and climatic implications |
title_short |
Nitrate records of a shallow ice core from East Antarctica: Atmospheric processes, preservation and climatic implications |
title_full |
Nitrate records of a shallow ice core from East Antarctica: Atmospheric processes, preservation and climatic implications |
title_fullStr |
Nitrate records of a shallow ice core from East Antarctica: Atmospheric processes, preservation and climatic implications |
title_full_unstemmed |
Nitrate records of a shallow ice core from East Antarctica: Atmospheric processes, preservation and climatic implications |
title_sort |
nitrate records of a shallow ice core from east antarctica: atmospheric processes, preservation and climatic implications |
publisher |
SAGE Publications |
publishDate |
2011 |
url |
http://drs.nio.org/drs/handle/2264/3806 |
geographic |
Antarctic Dronning Maud Land East Antarctica South Pole |
geographic_facet |
Antarctic Dronning Maud Land East Antarctica South Pole |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica ice core South pole South pole |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica ice core South pole South pole |
op_rights |
© The Author(s) 2010. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository |
_version_ |
1766268034565013504 |