Ice-core records of atmospheric sulphur
Sulphate and methanesulphonate (MSA), the two major sulphur species trapped in polar ice, have been extensivelyh studied in Antarctic and Greenland ice cores spanning the last centuries, as well as the entire last climatic cycle. Data from the cores are used to investigate the past contribution of v...
Published in: | Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences |
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ftpubmed:oai:pubmedcentral.nih.gov:1691926 2023-05-15T13:42:38+02:00 Ice-core records of atmospheric sulphur Legrand, M. 1997-02-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691926 https://doi.org/10.1098/rstb.1997.0019 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691926 http://dx.doi.org/10.1098/rstb.1997.0019 Article Text 1997 ftpubmed https://doi.org/10.1098/rstb.1997.0019 2013-08-31T12:36:59Z Sulphate and methanesulphonate (MSA), the two major sulphur species trapped in polar ice, have been extensivelyh studied in Antarctic and Greenland ice cores spanning the last centuries, as well as the entire last climatic cycle. Data from the cores are used to investigate the past contribution of volcanic and biogenic emissions to the natural sulphur budget in high latitude regions of both Hemispheres. Sulphate concentrations in polar ice very often increased during one or two years after large volcanic eruptions. Sulphate records show that fossil fuel combustion has enhanced sulphate concentrations in Greenland snow by a factor of 4 since the beginning of this century, and that no similar trend has occurred in Antarctica. At present, sulphate in Antarctic snow is mainly marine and biogenic in origin and the rate of dimethyl sulphide (DMS) emissions may have been enhanced during pst developments of El Niño Southern Oscillations (ENSO). Marine biota and non-eruptive volcanic emissions represent the two main contributors to the natural high northern latitude sulphur budget. Whele these two sources have contributed equally to the natural sulphur budget of Greenland ice over the last 9000 years BP, non-eruptive volcanic emissions largely dominated the budget at the beginning of the Holocene. A general negative correlation is observed between surcace air temperatures of the Northern Hemisphere and Greenland snow MSA concentrations over the last two centuries. Positive sea-ice anomalies also seem to strengthen DMS emissions. A steady decrease of MSA is observed in Greenland snow layers deposited since 1945, which may either be related to decreasing DMS emissions from marine biota at high northern latitudes or a changing yield of MSA from DMS oxidation driven by modification of the oxidative capacity of the atmosphere in these regions. Slightly reduced MSA concentrations are obvserved in Greenland glacial ice with respect to interglacial levels. In contrast, sulphate and calcium levels are strongly enhanced during the ... Text Antarc* Antarctic Antarctica Greenland Greenland ice cores ice core Sea ice PubMed Central (PMC) Antarctic Greenland Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 352 1350 241 250 |
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Article Legrand, M. Ice-core records of atmospheric sulphur |
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description |
Sulphate and methanesulphonate (MSA), the two major sulphur species trapped in polar ice, have been extensivelyh studied in Antarctic and Greenland ice cores spanning the last centuries, as well as the entire last climatic cycle. Data from the cores are used to investigate the past contribution of volcanic and biogenic emissions to the natural sulphur budget in high latitude regions of both Hemispheres. Sulphate concentrations in polar ice very often increased during one or two years after large volcanic eruptions. Sulphate records show that fossil fuel combustion has enhanced sulphate concentrations in Greenland snow by a factor of 4 since the beginning of this century, and that no similar trend has occurred in Antarctica. At present, sulphate in Antarctic snow is mainly marine and biogenic in origin and the rate of dimethyl sulphide (DMS) emissions may have been enhanced during pst developments of El Niño Southern Oscillations (ENSO). Marine biota and non-eruptive volcanic emissions represent the two main contributors to the natural high northern latitude sulphur budget. Whele these two sources have contributed equally to the natural sulphur budget of Greenland ice over the last 9000 years BP, non-eruptive volcanic emissions largely dominated the budget at the beginning of the Holocene. A general negative correlation is observed between surcace air temperatures of the Northern Hemisphere and Greenland snow MSA concentrations over the last two centuries. Positive sea-ice anomalies also seem to strengthen DMS emissions. A steady decrease of MSA is observed in Greenland snow layers deposited since 1945, which may either be related to decreasing DMS emissions from marine biota at high northern latitudes or a changing yield of MSA from DMS oxidation driven by modification of the oxidative capacity of the atmosphere in these regions. Slightly reduced MSA concentrations are obvserved in Greenland glacial ice with respect to interglacial levels. In contrast, sulphate and calcium levels are strongly enhanced during the ... |
format |
Text |
author |
Legrand, M. |
author_facet |
Legrand, M. |
author_sort |
Legrand, M. |
title |
Ice-core records of atmospheric sulphur |
title_short |
Ice-core records of atmospheric sulphur |
title_full |
Ice-core records of atmospheric sulphur |
title_fullStr |
Ice-core records of atmospheric sulphur |
title_full_unstemmed |
Ice-core records of atmospheric sulphur |
title_sort |
ice-core records of atmospheric sulphur |
publishDate |
1997 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691926 https://doi.org/10.1098/rstb.1997.0019 |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Antarctica Greenland Greenland ice cores ice core Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Greenland Greenland ice cores ice core Sea ice |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691926 http://dx.doi.org/10.1098/rstb.1997.0019 |
op_doi |
https://doi.org/10.1098/rstb.1997.0019 |
container_title |
Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences |
container_volume |
352 |
container_issue |
1350 |
container_start_page |
241 |
op_container_end_page |
250 |
_version_ |
1766170341725437952 |