Short-Term Meteorological and Environmental Signals Recorded in a Firn Core from a High-Accumulation Site on Plateau Laclavere, Antarctic Peninsula
High-accumulation sites are crucial for understanding the patterns and mechanisms of climate and environmental change in Antarctica since they allow gaining high-resolution proxy records from firn and ice. Here, we present new glacio- and isotope-geochemical data at sub-annual resolution from a firn...
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Humboldt-Universität zu Berlin
2021
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Online Access: | http://edoc.hu-berlin.de/18452/24530 https://nbn-resolving.org/urn:nbn:de:kobv:11-110-18452/24530-7 https://doi.org/10.3390/geosciences11100428 https://doi.org/10.18452/23872 |
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fthuberlin:oai:edoc.hu-berlin.de:18452/24530 2023-12-03T10:09:25+01:00 Short-Term Meteorological and Environmental Signals Recorded in a Firn Core from a High-Accumulation Site on Plateau Laclavere, Antarctic Peninsula Hoffmann-Abdi, Kirstin Fernandoy, Francisco Meyer, Hanno Freitag, Johannes Opel, Thomas McConnell, Joseph R. Schneider, Christoph 2021-10-15 application/pdf http://edoc.hu-berlin.de/18452/24530 https://nbn-resolving.org/urn:nbn:de:kobv:11-110-18452/24530-7 https://doi.org/10.3390/geosciences11100428 https://doi.org/10.18452/23872 eng eng Humboldt-Universität zu Berlin 10.18452/27594 http://edoc.hu-berlin.de/18452/24530 urn:nbn:de:kobv:11-110-18452/24530-7 doi:10.3390/geosciences11100428 http://dx.doi.org/10.18452/23872 2076-3263 (CC BY 4.0) Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Antarctic Peninsula firn cores stable water isotopes glacio-chemistry high accumulation surface melt 550 Geowissenschaften ddc:550 article doc-type:article publishedVersion 2021 fthuberlin https://doi.org/10.3390/geosciences1110042810.18452/23872 2023-11-05T23:36:16Z High-accumulation sites are crucial for understanding the patterns and mechanisms of climate and environmental change in Antarctica since they allow gaining high-resolution proxy records from firn and ice. Here, we present new glacio- and isotope-geochemical data at sub-annual resolution from a firn core retrieved from an ice cap on Plateau Laclavere (LCL), northern Antarctic Peninsula, covering the period 2012–2015. The signals of two volcanic eruptions and two forest fire events in South America could be identified in the non-sea-salt sulphur and black carbon records, respectively. Mean annual snow accumulation on LCL amounts to 2500 kg m−2 a−1 and exhibits low inter-annual variability. Time series of δ18O, δD and d excess show no seasonal cyclicity, which may result from (1) a reduced annual temperature amplitude due to the maritime climate and (2) post-depositional processes. The firn core stratigraphy indicates strong surface melt on LCL during austral summers 2013 and 2015, likely related to large-scale warm-air advection from lower latitudes and temporal variations in sea ice extent in the Bellingshausen-Amundsen Sea. The LCL ice cap is a highly valuable natural archive since it captures regional meteorological and environmental signals as well as their connection to the South American continent. Peer Reviewed Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica Ice cap Sea ice Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server Amundsen Sea Antarctic Antarctic Peninsula Austral Geosciences 11 10 428 |
institution |
Open Polar |
collection |
Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server |
op_collection_id |
fthuberlin |
language |
English |
topic |
Antarctic Peninsula firn cores stable water isotopes glacio-chemistry high accumulation surface melt 550 Geowissenschaften ddc:550 |
spellingShingle |
Antarctic Peninsula firn cores stable water isotopes glacio-chemistry high accumulation surface melt 550 Geowissenschaften ddc:550 Hoffmann-Abdi, Kirstin Fernandoy, Francisco Meyer, Hanno Freitag, Johannes Opel, Thomas McConnell, Joseph R. Schneider, Christoph Short-Term Meteorological and Environmental Signals Recorded in a Firn Core from a High-Accumulation Site on Plateau Laclavere, Antarctic Peninsula |
topic_facet |
Antarctic Peninsula firn cores stable water isotopes glacio-chemistry high accumulation surface melt 550 Geowissenschaften ddc:550 |
description |
High-accumulation sites are crucial for understanding the patterns and mechanisms of climate and environmental change in Antarctica since they allow gaining high-resolution proxy records from firn and ice. Here, we present new glacio- and isotope-geochemical data at sub-annual resolution from a firn core retrieved from an ice cap on Plateau Laclavere (LCL), northern Antarctic Peninsula, covering the period 2012–2015. The signals of two volcanic eruptions and two forest fire events in South America could be identified in the non-sea-salt sulphur and black carbon records, respectively. Mean annual snow accumulation on LCL amounts to 2500 kg m−2 a−1 and exhibits low inter-annual variability. Time series of δ18O, δD and d excess show no seasonal cyclicity, which may result from (1) a reduced annual temperature amplitude due to the maritime climate and (2) post-depositional processes. The firn core stratigraphy indicates strong surface melt on LCL during austral summers 2013 and 2015, likely related to large-scale warm-air advection from lower latitudes and temporal variations in sea ice extent in the Bellingshausen-Amundsen Sea. The LCL ice cap is a highly valuable natural archive since it captures regional meteorological and environmental signals as well as their connection to the South American continent. Peer Reviewed |
format |
Article in Journal/Newspaper |
author |
Hoffmann-Abdi, Kirstin Fernandoy, Francisco Meyer, Hanno Freitag, Johannes Opel, Thomas McConnell, Joseph R. Schneider, Christoph |
author_facet |
Hoffmann-Abdi, Kirstin Fernandoy, Francisco Meyer, Hanno Freitag, Johannes Opel, Thomas McConnell, Joseph R. Schneider, Christoph |
author_sort |
Hoffmann-Abdi, Kirstin |
title |
Short-Term Meteorological and Environmental Signals Recorded in a Firn Core from a High-Accumulation Site on Plateau Laclavere, Antarctic Peninsula |
title_short |
Short-Term Meteorological and Environmental Signals Recorded in a Firn Core from a High-Accumulation Site on Plateau Laclavere, Antarctic Peninsula |
title_full |
Short-Term Meteorological and Environmental Signals Recorded in a Firn Core from a High-Accumulation Site on Plateau Laclavere, Antarctic Peninsula |
title_fullStr |
Short-Term Meteorological and Environmental Signals Recorded in a Firn Core from a High-Accumulation Site on Plateau Laclavere, Antarctic Peninsula |
title_full_unstemmed |
Short-Term Meteorological and Environmental Signals Recorded in a Firn Core from a High-Accumulation Site on Plateau Laclavere, Antarctic Peninsula |
title_sort |
short-term meteorological and environmental signals recorded in a firn core from a high-accumulation site on plateau laclavere, antarctic peninsula |
publisher |
Humboldt-Universität zu Berlin |
publishDate |
2021 |
url |
http://edoc.hu-berlin.de/18452/24530 https://nbn-resolving.org/urn:nbn:de:kobv:11-110-18452/24530-7 https://doi.org/10.3390/geosciences11100428 https://doi.org/10.18452/23872 |
geographic |
Amundsen Sea Antarctic Antarctic Peninsula Austral |
geographic_facet |
Amundsen Sea Antarctic Antarctic Peninsula Austral |
genre |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica Ice cap Sea ice |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica Ice cap Sea ice |
op_relation |
10.18452/27594 http://edoc.hu-berlin.de/18452/24530 urn:nbn:de:kobv:11-110-18452/24530-7 doi:10.3390/geosciences11100428 http://dx.doi.org/10.18452/23872 2076-3263 |
op_rights |
(CC BY 4.0) Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/geosciences1110042810.18452/23872 |
container_title |
Geosciences |
container_volume |
11 |
container_issue |
10 |
container_start_page |
428 |
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1784263578819231744 |