English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Conference Paper

Towards a New Generation of PAGES-2k Antarctic Climate Reconstructions

Authors

Orsi,  Anais
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Thomas,  Liz
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Dalaiden,  Quentin
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Vance,  Tessa
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Yu,  Zicheng
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Henley,  Benjamin
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in GFZpublic
Supplementary Material (public)
There is no public supplementary material available
Citation

Orsi, A., Thomas, L., Dalaiden, Q., Vance, T., Yu, Z., Henley, B. (2023): Towards a New Generation of PAGES-2k Antarctic Climate Reconstructions, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4486


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021914
Abstract
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.