Understanding seasonal Antarctic sea ice variations since 1905 ...

• Main Authors: Fogt, Ryan, Raphael, Marilyn, Handcock, Mark, Jones, Julie, Zarembka, Maddy, Dalaiden, Quentin
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Antarctic; Arctic; Antarc*; ice core; Sea ice
• Online Access: https://dx.doi.org/10.57757/iugg23-0508; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016995

<!--!introduction!--> Antarctic sea ice is a complex essential climate variable, primarily measured by satellite measurements that begin in 1979. The relatively short satellite record details significant time-varying trends, with increases in total Antarctic sea ice extent through 2016, in stark contrast to the Arctic. Recently, both 2022 and 2023 were consecutively marked with record lows in total Antarctic sea ice extent. To place these trends in a longer historical perspective, several reconstructions of Antarctic sea ice extent have been completed. One approach uses ice core information to reconstruct regional (or, when used in a climate model, total) historical variations of Antarctic sea ice extent or ice edge. Another recent approach uses statistical relationships with climate across the Southern Hemisphere to reconstruction seasonally- and sectorally-resolved Antarctic sea ice extent. While these two approaches provide a much longer historical context, there are notable differences between the ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...