Towards a New Generation of PAGES-2k Antarctic Climate Reconstructions
One of the strange things about anthropogenic climate change is that the Arctic is warming a lot more than Antarctica. Some of these differences can be attributed to the two regions’ vastly different regional geographies and the opposing influences of large areas of land and sea. Actually, in many p...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5021914 2023-07-30T03:56:20+02:00 Towards a New Generation of PAGES-2k Antarctic Climate Reconstructions Orsi, A. Thomas, L. Dalaiden, Q. Vance, T. Yu, Z. Henley, B. 2023-07-11 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021914 eng eng info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-4486 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021914 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) info:eu-repo/semantics/conferenceObject 2023 ftgfzpotsdam https://doi.org/10.57757/IUGG23-4486 2023-07-16T23:40:28Z One of the strange things about anthropogenic climate change is that the Arctic is warming a lot more than Antarctica. Some of these differences can be attributed to the two regions’ vastly different regional geographies and the opposing influences of large areas of land and sea. Actually, in many parts of the Antarctic continent, it is not clear that there is any warming trend at all. This is partly due to the short instrumental record and that very large natural internal climate variability may be masking some anthropogenic trends. In this context, in order to understand the fate of the Antarctic ice sheet, and possible sea level rise, it is particularly important to precisely quantify internal climate variability, and study its mechanisms. This has been the scope of the PAGES-2k working group for more than a decade. Following extensive database work to reconstruct temperature variability over the past 2000 years, from water isotopes in an array of ice cores, PAGES-2k is now turning to reconstructing hydroclimate variability. In Antarctica, precipitation variability is dominated by the presence or absence of just a few extreme events per year. These extreme precipitation events are dynamically linked to atmospheric blocking. In this work, we review ice core evidence for atmospheric blocking variability around Antarctica, and lay the foundation for a new generation of multi-site multi-proxy reconstructions of Antarctic climate variability for the past 2000 years. This work is supported by PAGES-2k, and you are welcome to get involved. Conference Object Antarc* Antarctic Antarctica Arctic Climate change ice core Ice Sheet GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Antarctic Arctic The Antarctic |
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GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
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ftgfzpotsdam |
language |
English |
description |
One of the strange things about anthropogenic climate change is that the Arctic is warming a lot more than Antarctica. Some of these differences can be attributed to the two regions’ vastly different regional geographies and the opposing influences of large areas of land and sea. Actually, in many parts of the Antarctic continent, it is not clear that there is any warming trend at all. This is partly due to the short instrumental record and that very large natural internal climate variability may be masking some anthropogenic trends. In this context, in order to understand the fate of the Antarctic ice sheet, and possible sea level rise, it is particularly important to precisely quantify internal climate variability, and study its mechanisms. This has been the scope of the PAGES-2k working group for more than a decade. Following extensive database work to reconstruct temperature variability over the past 2000 years, from water isotopes in an array of ice cores, PAGES-2k is now turning to reconstructing hydroclimate variability. In Antarctica, precipitation variability is dominated by the presence or absence of just a few extreme events per year. These extreme precipitation events are dynamically linked to atmospheric blocking. In this work, we review ice core evidence for atmospheric blocking variability around Antarctica, and lay the foundation for a new generation of multi-site multi-proxy reconstructions of Antarctic climate variability for the past 2000 years. This work is supported by PAGES-2k, and you are welcome to get involved. |
format |
Conference Object |
author |
Orsi, A. Thomas, L. Dalaiden, Q. Vance, T. Yu, Z. Henley, B. |
spellingShingle |
Orsi, A. Thomas, L. Dalaiden, Q. Vance, T. Yu, Z. Henley, B. Towards a New Generation of PAGES-2k Antarctic Climate Reconstructions |
author_facet |
Orsi, A. Thomas, L. Dalaiden, Q. Vance, T. Yu, Z. Henley, B. |
author_sort |
Orsi, A. |
title |
Towards a New Generation of PAGES-2k Antarctic Climate Reconstructions |
title_short |
Towards a New Generation of PAGES-2k Antarctic Climate Reconstructions |
title_full |
Towards a New Generation of PAGES-2k Antarctic Climate Reconstructions |
title_fullStr |
Towards a New Generation of PAGES-2k Antarctic Climate Reconstructions |
title_full_unstemmed |
Towards a New Generation of PAGES-2k Antarctic Climate Reconstructions |
title_sort |
towards a new generation of pages-2k antarctic climate reconstructions |
publishDate |
2023 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021914 |
geographic |
Antarctic Arctic The Antarctic |
geographic_facet |
Antarctic Arctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Arctic Climate change ice core Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Arctic Climate change ice core Ice Sheet |
op_source |
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-4486 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021914 |
op_doi |
https://doi.org/10.57757/IUGG23-4486 |
_version_ |
1772812895536545792 |