Regional validation of the use of diatoms in ice cores from the Antarctic Peninsula as a Southern Hemisphere westerly wind proxy
The Southern Hemisphere westerly winds are among the most important drivers of recently observed environmental changes in West Antarctica. However, the lack of long-term wind records in this region hinders our ability to assess the long-term context of these variations. Ice core proxy records yield...
Published in: | Climate of the Past |
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Copernicus Publications
2022
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Online Access: | https://doi.org/10.5194/cp-18-1709-2022 https://cp.copernicus.org/articles/18/1709/2022/cp-18-1709-2022.pdf https://doaj.org/article/3a8153af9e544af2ad5657a02b5beac0 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:3a8153af9e544af2ad5657a02b5beac0 2023-05-15T13:43:15+02:00 Regional validation of the use of diatoms in ice cores from the Antarctic Peninsula as a Southern Hemisphere westerly wind proxy D. R. Tetzner E. R. Thomas C. S. Allen M. M. Grieman 2022-07-01 https://doi.org/10.5194/cp-18-1709-2022 https://cp.copernicus.org/articles/18/1709/2022/cp-18-1709-2022.pdf https://doaj.org/article/3a8153af9e544af2ad5657a02b5beac0 en eng Copernicus Publications doi:10.5194/cp-18-1709-2022 1814-9324 1814-9332 https://cp.copernicus.org/articles/18/1709/2022/cp-18-1709-2022.pdf https://doaj.org/article/3a8153af9e544af2ad5657a02b5beac0 undefined Climate of the Past, Vol 18, Pp 1709-1727 (2022) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2022 fttriple https://doi.org/10.5194/cp-18-1709-2022 2023-01-22T19:11:46Z The Southern Hemisphere westerly winds are among the most important drivers of recently observed environmental changes in West Antarctica. However, the lack of long-term wind records in this region hinders our ability to assess the long-term context of these variations. Ice core proxy records yield valuable information about past environmental changes, although current proxies present limitations when aiming to reconstruct past winds. Here we present the first regional wind study based on the novel use of diatoms preserved in Antarctic ice cores. We assess the temporal variability in diatom abundance and its relation to regional environmental parameters spanning a 20-year period across three sites in the southern Antarctic Peninsula and Ellsworth Land, Antarctica. Correlation analyses reveal that the temporal variability of diatom abundance from high-elevation ice core sites is driven by changes in wind strength over the core of the Southern Hemisphere westerly wind belt, validating the use of diatoms preserved in ice cores from high-elevation inland sites in the southern Antarctic Peninsula and Ellsworth Land as a proxy for reconstructing past variations in wind strength over the Pacific sector of the Southern Hemisphere westerly wind belt. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica ice core West Antarctica Unknown Antarctic Antarctic Peninsula Ellsworth Land ENVELOPE(-85.000,-85.000,-75.000,-75.000) Pacific The Antarctic West Antarctica Climate of the Past 18 7 1709 1727 |
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English |
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geo envir |
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geo envir D. R. Tetzner E. R. Thomas C. S. Allen M. M. Grieman Regional validation of the use of diatoms in ice cores from the Antarctic Peninsula as a Southern Hemisphere westerly wind proxy |
topic_facet |
geo envir |
description |
The Southern Hemisphere westerly winds are among the most important drivers of recently observed environmental changes in West Antarctica. However, the lack of long-term wind records in this region hinders our ability to assess the long-term context of these variations. Ice core proxy records yield valuable information about past environmental changes, although current proxies present limitations when aiming to reconstruct past winds. Here we present the first regional wind study based on the novel use of diatoms preserved in Antarctic ice cores. We assess the temporal variability in diatom abundance and its relation to regional environmental parameters spanning a 20-year period across three sites in the southern Antarctic Peninsula and Ellsworth Land, Antarctica. Correlation analyses reveal that the temporal variability of diatom abundance from high-elevation ice core sites is driven by changes in wind strength over the core of the Southern Hemisphere westerly wind belt, validating the use of diatoms preserved in ice cores from high-elevation inland sites in the southern Antarctic Peninsula and Ellsworth Land as a proxy for reconstructing past variations in wind strength over the Pacific sector of the Southern Hemisphere westerly wind belt. |
format |
Article in Journal/Newspaper |
author |
D. R. Tetzner E. R. Thomas C. S. Allen M. M. Grieman |
author_facet |
D. R. Tetzner E. R. Thomas C. S. Allen M. M. Grieman |
author_sort |
D. R. Tetzner |
title |
Regional validation of the use of diatoms in ice cores from the Antarctic Peninsula as a Southern Hemisphere westerly wind proxy |
title_short |
Regional validation of the use of diatoms in ice cores from the Antarctic Peninsula as a Southern Hemisphere westerly wind proxy |
title_full |
Regional validation of the use of diatoms in ice cores from the Antarctic Peninsula as a Southern Hemisphere westerly wind proxy |
title_fullStr |
Regional validation of the use of diatoms in ice cores from the Antarctic Peninsula as a Southern Hemisphere westerly wind proxy |
title_full_unstemmed |
Regional validation of the use of diatoms in ice cores from the Antarctic Peninsula as a Southern Hemisphere westerly wind proxy |
title_sort |
regional validation of the use of diatoms in ice cores from the antarctic peninsula as a southern hemisphere westerly wind proxy |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/cp-18-1709-2022 https://cp.copernicus.org/articles/18/1709/2022/cp-18-1709-2022.pdf https://doaj.org/article/3a8153af9e544af2ad5657a02b5beac0 |
long_lat |
ENVELOPE(-85.000,-85.000,-75.000,-75.000) |
geographic |
Antarctic Antarctic Peninsula Ellsworth Land Pacific The Antarctic West Antarctica |
geographic_facet |
Antarctic Antarctic Peninsula Ellsworth Land Pacific The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica ice core West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica ice core West Antarctica |
op_source |
Climate of the Past, Vol 18, Pp 1709-1727 (2022) |
op_relation |
doi:10.5194/cp-18-1709-2022 1814-9324 1814-9332 https://cp.copernicus.org/articles/18/1709/2022/cp-18-1709-2022.pdf https://doaj.org/article/3a8153af9e544af2ad5657a02b5beac0 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-18-1709-2022 |
container_title |
Climate of the Past |
container_volume |
18 |
container_issue |
7 |
container_start_page |
1709 |
op_container_end_page |
1727 |
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1766186298874265600 |