Recent climate tendencies on an East Antarctic ice shelf inferred from a shallow firn core network
Nearly three decades of stable isotope ratios and surface mass balance (SMB) data from eight shallow firn cores retrieved at Fimbul Ice Shelf, East Antarctica, in the Austral summers 2009–2011 have been investigated. An additional longer core drilled in 2000/2001 extends the series back to the early...
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ftpubmed:oai:pubmedcentral.nih.gov:4370759 2023-05-15T14:00:02+02:00 Recent climate tendencies on an East Antarctic ice shelf inferred from a shallow firn core network Schlosser, E Anschütz, H Divine, D Martma, T Sinisalo, A Altnau, S Isaksson, E 2014-06-16 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4370759 https://doi.org/10.1002/2013JD020818 en eng Blackwell Publishing Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://dx.doi.org/10.1002/2013JD020818 ©2014. The Authors. http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. CC-BY-NC-ND Research Articles Text 2014 ftpubmed https://doi.org/10.1002/2013JD020818 2015-03-29T01:06:44Z Nearly three decades of stable isotope ratios and surface mass balance (SMB) data from eight shallow firn cores retrieved at Fimbul Ice Shelf, East Antarctica, in the Austral summers 2009–2011 have been investigated. An additional longer core drilled in 2000/2001 extends the series back to the early eighteenth century. Isotope ratios and SMB from the stacked record of all cores were also related to instrumental temperature data from Neumayer Station on Ekström Ice Shelf. Since the second half of the twentieth century, the SMB shows a statistically significant negative trend, whereas the δ18O of the cores shows a significant positive trend. No trend is found in air temperature at the nearest suitable weather station, Neumayer (available since 1981). This does not correspond to the statistically significant positive trend in Southern Annular Mode (SAM) index, which is usually associated with a cooling of East Antarctica. SAM index and SMB are negatively correlated, which might be explained by a decrease in meridional exchange of energy and moisture leading to lower precipitation amounts. Future monitoring of climate change on the sensitive Antarctic ice shelves is necessary to assess its consequences for sea level change. Text Antarc* Antarctic Antarctica East Antarctica Fimbul Ice Shelf Ice Shelf Ice Shelves PubMed Central (PMC) Antarctic Austral East Antarctica Ekström Ice Shelf ENVELOPE(-8.000,-8.000,-71.000,-71.000) Fimbul Ice Shelf ENVELOPE(-0.500,-0.500,-70.750,-70.750) Neumayer Neumayer Station Journal of Geophysical Research: Atmospheres 119 11 6549 6562 |
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Research Articles |
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Research Articles Schlosser, E Anschütz, H Divine, D Martma, T Sinisalo, A Altnau, S Isaksson, E Recent climate tendencies on an East Antarctic ice shelf inferred from a shallow firn core network |
topic_facet |
Research Articles |
description |
Nearly three decades of stable isotope ratios and surface mass balance (SMB) data from eight shallow firn cores retrieved at Fimbul Ice Shelf, East Antarctica, in the Austral summers 2009–2011 have been investigated. An additional longer core drilled in 2000/2001 extends the series back to the early eighteenth century. Isotope ratios and SMB from the stacked record of all cores were also related to instrumental temperature data from Neumayer Station on Ekström Ice Shelf. Since the second half of the twentieth century, the SMB shows a statistically significant negative trend, whereas the δ18O of the cores shows a significant positive trend. No trend is found in air temperature at the nearest suitable weather station, Neumayer (available since 1981). This does not correspond to the statistically significant positive trend in Southern Annular Mode (SAM) index, which is usually associated with a cooling of East Antarctica. SAM index and SMB are negatively correlated, which might be explained by a decrease in meridional exchange of energy and moisture leading to lower precipitation amounts. Future monitoring of climate change on the sensitive Antarctic ice shelves is necessary to assess its consequences for sea level change. |
format |
Text |
author |
Schlosser, E Anschütz, H Divine, D Martma, T Sinisalo, A Altnau, S Isaksson, E |
author_facet |
Schlosser, E Anschütz, H Divine, D Martma, T Sinisalo, A Altnau, S Isaksson, E |
author_sort |
Schlosser, E |
title |
Recent climate tendencies on an East Antarctic ice shelf inferred from a shallow firn core network |
title_short |
Recent climate tendencies on an East Antarctic ice shelf inferred from a shallow firn core network |
title_full |
Recent climate tendencies on an East Antarctic ice shelf inferred from a shallow firn core network |
title_fullStr |
Recent climate tendencies on an East Antarctic ice shelf inferred from a shallow firn core network |
title_full_unstemmed |
Recent climate tendencies on an East Antarctic ice shelf inferred from a shallow firn core network |
title_sort |
recent climate tendencies on an east antarctic ice shelf inferred from a shallow firn core network |
publisher |
Blackwell Publishing Ltd |
publishDate |
2014 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4370759 https://doi.org/10.1002/2013JD020818 |
long_lat |
ENVELOPE(-8.000,-8.000,-71.000,-71.000) ENVELOPE(-0.500,-0.500,-70.750,-70.750) |
geographic |
Antarctic Austral East Antarctica Ekström Ice Shelf Fimbul Ice Shelf Neumayer Neumayer Station |
geographic_facet |
Antarctic Austral East Antarctica Ekström Ice Shelf Fimbul Ice Shelf Neumayer Neumayer Station |
genre |
Antarc* Antarctic Antarctica East Antarctica Fimbul Ice Shelf Ice Shelf Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Fimbul Ice Shelf Ice Shelf Ice Shelves |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://dx.doi.org/10.1002/2013JD020818 |
op_rights |
©2014. The Authors. http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1002/2013JD020818 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
119 |
container_issue |
11 |
container_start_page |
6549 |
op_container_end_page |
6562 |
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1766269016420122624 |