Articles | Volume 21, issue 5
https://doi.org/10.5194/cp-21-897-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-21-897-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 May 2025
Research article |
| 16 May 2025
| 16 May 2025
Evaluating the 20th Century Reanalysis Version 3 with synoptic typing and an East Antarctic ice core accumulation record
Institute for Marine & Antarctic Studies, University of Tasmania, Battery Point 7004, Australia
Australian Centre for Excellence in Antarctic Science, Institute for Marine & Antarctic Studies, University of Tasmania, Battery Point 7004, Australia
Danielle G. Udy
Institute for Marine & Antarctic Studies, University of Tasmania, Battery Point 7004, Australia
Australian Antarctic Program Partnership, Institute for Marine & Antarctic Studies, University of Tasmania, Battery Point 7004, Australia
Australian Centre for Excellence in Antarctic Science, Institute for Marine & Antarctic Studies, University of Tasmania, Battery Point 7004, Australia
Tessa R. Vance
Australian Antarctic Program Partnership, Institute for Marine & Antarctic Studies, University of Tasmania, Battery Point 7004, Australia
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Short summary
Reanalyses can be used to study past weather and climate, but their reliability is uncertain in data-sparse regions, such as the southern Indian Ocean. We used weather typing and an ice core record from East Antarctica to show that the 20th Century Reanalysis project can better represent the weather conditions that lead to snowfall variability at the ice core site when key weather observations from the Southern Ocean (e.g. Macquarie Island) commence around the mid-20th century.
Reanalyses can be used to study past weather and climate, but their reliability is uncertain in...
