Deciphering stable water isotope records of firn cores from a strongly maritime, high-accumulation site on the Antarctic Peninsula
Stable water isotope records of six firn cores retrieved from two adjacent plateaus on the northern Antarctic Peninsula between 2014 and 2016 are presented and investigated for their connections with firn-core glacio-chemical data, meteorological records and modelling results. Average annual accumul...
Published in: | Journal of Glaciology |
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Cambridge University Press
2023
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Online Access: | http://nora.nerc.ac.uk/id/eprint/536244/ https://nora.nerc.ac.uk/id/eprint/536244/1/deciphering-stable-water-isotope-records-of-firn-cores-from-a-strongly-maritime-high-accumulation-site-on-the-antarctic-peninsula.pdf https://www.cambridge.org/core/journals/journal-of-glaciology/article/deciphering-stable-water-isotope-records-of-firn-cores-from-a-strongly-maritime-highaccumulation-site-on-the-antarctic-peninsula/47945656E39F0FE780552A62AB4A9B18 |
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ftnerc:oai:nora.nerc.ac.uk:536244 2023-12-24T10:11:31+01:00 Deciphering stable water isotope records of firn cores from a strongly maritime, high-accumulation site on the Antarctic Peninsula Hoffmann-Abdi, Kirstin Meyer, Hanno Fernandoy, Francisco Freitag, Johannes Shaw, Fyntan M. Werner, Martin Thomas, Elizabeth R. McConnell, Joseph R. Schneider, Christoph 2023-11-08 text http://nora.nerc.ac.uk/id/eprint/536244/ https://nora.nerc.ac.uk/id/eprint/536244/1/deciphering-stable-water-isotope-records-of-firn-cores-from-a-strongly-maritime-high-accumulation-site-on-the-antarctic-peninsula.pdf https://www.cambridge.org/core/journals/journal-of-glaciology/article/deciphering-stable-water-isotope-records-of-firn-cores-from-a-strongly-maritime-highaccumulation-site-on-the-antarctic-peninsula/47945656E39F0FE780552A62AB4A9B18 en eng Cambridge University Press https://nora.nerc.ac.uk/id/eprint/536244/1/deciphering-stable-water-isotope-records-of-firn-cores-from-a-strongly-maritime-high-accumulation-site-on-the-antarctic-peninsula.pdf Hoffmann-Abdi, Kirstin; Meyer, Hanno; Fernandoy, Francisco; Freitag, Johannes; Shaw, Fyntan M.; Werner, Martin; Thomas, Elizabeth R. orcid:0000-0002-3010-6493 McConnell, Joseph R.; Schneider, Christoph. 2023 Deciphering stable water isotope records of firn cores from a strongly maritime, high-accumulation site on the Antarctic Peninsula. Journal of Glaciology. 19, pp. https://doi.org/10.1017/jog.2023.79 <https://doi.org/10.1017/jog.2023.79> cc_by_4 Publication - Article PeerReviewed 2023 ftnerc https://doi.org/10.1017/jog.2023.79 2023-11-24T00:03:12Z Stable water isotope records of six firn cores retrieved from two adjacent plateaus on the northern Antarctic Peninsula between 2014 and 2016 are presented and investigated for their connections with firn-core glacio-chemical data, meteorological records and modelling results. Average annual accumulation rates of 2500 kg m−2 a−1 largely reduce the modification of isotopic signals in the snowpack by post-depositional processes, allowing excellent signal preservation in space and time. Comparison of firn-core and ECHAM6-wiso modelled δ18O and d-excess records reveals a large agreement on annual and sub-annual scales, suggesting firn-core stable water isotopes to be representative of specific synoptic situations. The six firn cores exhibit highly similar isotopic patterns in the overlapping period (2013), which seem to be related to temporal changes in moisture sources rather than local near-surface air temperatures. Backward trajectories calculated with the HYSPLIT model suggest that prominent δ18O minima in 2013 associated with elevated sea salt concentrations are related to long-range moisture transport dominated by westerly winds during positive SAM phases. In contrast, a broad δ18O maximum in the same year accompanied by increased concentrations of black carbon and mineral dust corresponds to the advection of more locally derived moisture with northerly flow components (South America) when the SAM is negative. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Journal of Glaciology Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula Journal of Glaciology 1 19 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Stable water isotope records of six firn cores retrieved from two adjacent plateaus on the northern Antarctic Peninsula between 2014 and 2016 are presented and investigated for their connections with firn-core glacio-chemical data, meteorological records and modelling results. Average annual accumulation rates of 2500 kg m−2 a−1 largely reduce the modification of isotopic signals in the snowpack by post-depositional processes, allowing excellent signal preservation in space and time. Comparison of firn-core and ECHAM6-wiso modelled δ18O and d-excess records reveals a large agreement on annual and sub-annual scales, suggesting firn-core stable water isotopes to be representative of specific synoptic situations. The six firn cores exhibit highly similar isotopic patterns in the overlapping period (2013), which seem to be related to temporal changes in moisture sources rather than local near-surface air temperatures. Backward trajectories calculated with the HYSPLIT model suggest that prominent δ18O minima in 2013 associated with elevated sea salt concentrations are related to long-range moisture transport dominated by westerly winds during positive SAM phases. In contrast, a broad δ18O maximum in the same year accompanied by increased concentrations of black carbon and mineral dust corresponds to the advection of more locally derived moisture with northerly flow components (South America) when the SAM is negative. |
format |
Article in Journal/Newspaper |
author |
Hoffmann-Abdi, Kirstin Meyer, Hanno Fernandoy, Francisco Freitag, Johannes Shaw, Fyntan M. Werner, Martin Thomas, Elizabeth R. McConnell, Joseph R. Schneider, Christoph |
spellingShingle |
Hoffmann-Abdi, Kirstin Meyer, Hanno Fernandoy, Francisco Freitag, Johannes Shaw, Fyntan M. Werner, Martin Thomas, Elizabeth R. McConnell, Joseph R. Schneider, Christoph Deciphering stable water isotope records of firn cores from a strongly maritime, high-accumulation site on the Antarctic Peninsula |
author_facet |
Hoffmann-Abdi, Kirstin Meyer, Hanno Fernandoy, Francisco Freitag, Johannes Shaw, Fyntan M. Werner, Martin Thomas, Elizabeth R. McConnell, Joseph R. Schneider, Christoph |
author_sort |
Hoffmann-Abdi, Kirstin |
title |
Deciphering stable water isotope records of firn cores from a strongly maritime, high-accumulation site on the Antarctic Peninsula |
title_short |
Deciphering stable water isotope records of firn cores from a strongly maritime, high-accumulation site on the Antarctic Peninsula |
title_full |
Deciphering stable water isotope records of firn cores from a strongly maritime, high-accumulation site on the Antarctic Peninsula |
title_fullStr |
Deciphering stable water isotope records of firn cores from a strongly maritime, high-accumulation site on the Antarctic Peninsula |
title_full_unstemmed |
Deciphering stable water isotope records of firn cores from a strongly maritime, high-accumulation site on the Antarctic Peninsula |
title_sort |
deciphering stable water isotope records of firn cores from a strongly maritime, high-accumulation site on the antarctic peninsula |
publisher |
Cambridge University Press |
publishDate |
2023 |
url |
http://nora.nerc.ac.uk/id/eprint/536244/ https://nora.nerc.ac.uk/id/eprint/536244/1/deciphering-stable-water-isotope-records-of-firn-cores-from-a-strongly-maritime-high-accumulation-site-on-the-antarctic-peninsula.pdf https://www.cambridge.org/core/journals/journal-of-glaciology/article/deciphering-stable-water-isotope-records-of-firn-cores-from-a-strongly-maritime-highaccumulation-site-on-the-antarctic-peninsula/47945656E39F0FE780552A62AB4A9B18 |
geographic |
Antarctic The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Journal of Glaciology |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Journal of Glaciology |
op_relation |
https://nora.nerc.ac.uk/id/eprint/536244/1/deciphering-stable-water-isotope-records-of-firn-cores-from-a-strongly-maritime-high-accumulation-site-on-the-antarctic-peninsula.pdf Hoffmann-Abdi, Kirstin; Meyer, Hanno; Fernandoy, Francisco; Freitag, Johannes; Shaw, Fyntan M.; Werner, Martin; Thomas, Elizabeth R. orcid:0000-0002-3010-6493 McConnell, Joseph R.; Schneider, Christoph. 2023 Deciphering stable water isotope records of firn cores from a strongly maritime, high-accumulation site on the Antarctic Peninsula. Journal of Glaciology. 19, pp. https://doi.org/10.1017/jog.2023.79 <https://doi.org/10.1017/jog.2023.79> |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1017/jog.2023.79 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
19 |
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1786166378907041792 |