Intercomparison of firn core and meteorological data
High resolution firn core records of the oxygen isotope ratio (18O) and trace chemical species were extracted from a high accumulation site on Law Dome, East Antarctica. Inter-core comparisons were conducted and regional events identified in cores 5 km apart. High resolution dating of one of the fir...
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Cambridge University Press
2001
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ftunivtasecite:oai:ecite.utas.edu.au:22156 2023-05-15T13:59:07+02:00 Intercomparison of firn core and meteorological data McMorrow, AJ Curran, MAJ van Ommen, TD Morgan, VI Pook, MJ Allison, I 2001 https://doi.org/10.1017/S0954102001000463 http://ecite.utas.edu.au/22156 en eng Cambridge University Press http://dx.doi.org/10.1017/S0954102001000463 McMorrow, AJ and Curran, MAJ and van Ommen, TD and Morgan, VI and Pook, MJ and Allison, I, Intercomparison of firn core and meteorological data, Antarctic Science, 13, (3) pp. 329-337. ISSN 0954-1020 (2001) [Refereed Article] http://ecite.utas.edu.au/22156 Earth Sciences Atmospheric Sciences Meteorology Refereed Article PeerReviewed 2001 ftunivtasecite https://doi.org/10.1017/S0954102001000463 2019-12-13T21:04:07Z High resolution firn core records of the oxygen isotope ratio (18O) and trace chemical species were extracted from a high accumulation site on Law Dome, East Antarctica. Inter-core comparisons were conducted and regional events identified in cores 5 km apart. High resolution dating of one of the firn cores was established using a co-located Automatic Weather Station (AWS) equipped with a snow accumulation sensor, allowing dating of individual precipitation events in the firn core record. Variations in the 18O and trace chemical records were compared with meteorological conditions at the mesoscale and the synoptic-scale. Particular focus was given to an abrupt change in sea salt concentrations and 18O within a depth range that appears from AWS accumulation data to have been deposited over a 24 hour period. The abrupt change in the firn core record was found to be consistent with an abrupt change in meteorological conditions. Direct comparisons between high resolution firn core records and meteorological conditions will greatly facilitate the interpretation of signals preserved in deep ice cores. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica East Antarctica eCite UTAS (University of Tasmania) East Antarctica Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733) Antarctic Science 13 3 329 337 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Atmospheric Sciences Meteorology |
spellingShingle |
Earth Sciences Atmospheric Sciences Meteorology McMorrow, AJ Curran, MAJ van Ommen, TD Morgan, VI Pook, MJ Allison, I Intercomparison of firn core and meteorological data |
topic_facet |
Earth Sciences Atmospheric Sciences Meteorology |
description |
High resolution firn core records of the oxygen isotope ratio (18O) and trace chemical species were extracted from a high accumulation site on Law Dome, East Antarctica. Inter-core comparisons were conducted and regional events identified in cores 5 km apart. High resolution dating of one of the firn cores was established using a co-located Automatic Weather Station (AWS) equipped with a snow accumulation sensor, allowing dating of individual precipitation events in the firn core record. Variations in the 18O and trace chemical records were compared with meteorological conditions at the mesoscale and the synoptic-scale. Particular focus was given to an abrupt change in sea salt concentrations and 18O within a depth range that appears from AWS accumulation data to have been deposited over a 24 hour period. The abrupt change in the firn core record was found to be consistent with an abrupt change in meteorological conditions. Direct comparisons between high resolution firn core records and meteorological conditions will greatly facilitate the interpretation of signals preserved in deep ice cores. |
format |
Article in Journal/Newspaper |
author |
McMorrow, AJ Curran, MAJ van Ommen, TD Morgan, VI Pook, MJ Allison, I |
author_facet |
McMorrow, AJ Curran, MAJ van Ommen, TD Morgan, VI Pook, MJ Allison, I |
author_sort |
McMorrow, AJ |
title |
Intercomparison of firn core and meteorological data |
title_short |
Intercomparison of firn core and meteorological data |
title_full |
Intercomparison of firn core and meteorological data |
title_fullStr |
Intercomparison of firn core and meteorological data |
title_full_unstemmed |
Intercomparison of firn core and meteorological data |
title_sort |
intercomparison of firn core and meteorological data |
publisher |
Cambridge University Press |
publishDate |
2001 |
url |
https://doi.org/10.1017/S0954102001000463 http://ecite.utas.edu.au/22156 |
long_lat |
ENVELOPE(112.833,112.833,-66.733,-66.733) |
geographic |
East Antarctica Law Dome |
geographic_facet |
East Antarctica Law Dome |
genre |
Antarc* Antarctic Science Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Science Antarctica East Antarctica |
op_relation |
http://dx.doi.org/10.1017/S0954102001000463 McMorrow, AJ and Curran, MAJ and van Ommen, TD and Morgan, VI and Pook, MJ and Allison, I, Intercomparison of firn core and meteorological data, Antarctic Science, 13, (3) pp. 329-337. ISSN 0954-1020 (2001) [Refereed Article] http://ecite.utas.edu.au/22156 |
op_doi |
https://doi.org/10.1017/S0954102001000463 |
container_title |
Antarctic Science |
container_volume |
13 |
container_issue |
3 |
container_start_page |
329 |
op_container_end_page |
337 |
_version_ |
1766267511708319744 |