[M-IS15] Global Antarctic Science: connecting the chain of changing huge ice sheets and global environments

Tue. May 27, 2025 10:45 AM - 12:15 PM 101 (International Conference Hall, Makuhari Messe)

convener:Takeshige Ishiwa(National Institute of Polar Research), Kazuya Kusahara(Japan Agency for Marine-Earth Science and Technology), Masahiro Minowa(Institute of Low Temperature Science, Hokkaido University), Mutusmi Iizuka(The National Institute of Advanced Industrial Science and Technology), Chairperson:Masahiro Minowa(Institute of Low Temperature Science, Hokkaido University)

Due to global warming, the Antarctic Ice Sheet (AIS) may be beyond a critical threshold, causing the global sea level rise at a faster rate than previously thought. The changes in AIS could trigger a cascade of global tipping points as ocean circulations. The timescale of these changes is various and has the different characteristics of the response. The complex interactions among the different spatiotemporal phenomena prevent improvement of future predictions. This session will promote interdisciplinary research related to the Southern Ocean and AIS, focusing on the changes in AIS, Southern Ocean circulations and ecosystems from the past to present, which is essential for accurately understanding global environmental changes. Also, the session will comprehensively discuss the latest observational and model simulation results and proposals for new research observations. This session is assigned as a Japanese session, but presentations in English are also welcome.

+Add all to schedule

10:45 AM - 11:00 AM

[MIS15-07] Direct observations of ocean heat transport toward the Totten Ice Shelf in East Antarctica

*Yoshihiko Ohashi¹, Daisuke Hirano^1,2, Kohei Mizobata³, Kazuya Kusahara⁴, Kazuki Nakata⁵, Kazuya Ono⁶, Masakazu Fujii^1,2, Ryosuke Makabe^1,2, Kay I. Ohshima⁶, Takeshi Tamura^1,2, Shigeru Aoki⁶ (1.National Institute of Polar Research, 2.SOKENDAI, 3.Tokyo University of Marine Science and Technology, 4.Japan Agency for Marine-Earth Science and Technology, 5.Japan Aerospace Exploration Agency, 6.Hokkaido University)

11:00 AM - 11:15 AM

[MIS15-08] Interannual variation of the Lützow-Holm Bay Land-fast Ice Extent

*Takuji Waseda¹, Takehiko Nose¹, Tsubasa Kodaira¹, Takatoshi Matsuzawa², Takeshi Tamura³ (1.The University of Tokyo, 2.Nationarl Maritime Research Institute, 3.National Institute for Polar Research)

11:15 AM - 11:30 AM

[MIS15-09] A primary driver of the recent summer Antarctic sea-ice minima: Ice-ocean albedo feedback

*Sohey Nihashi¹, Kay I. Ohshima² (1.Tomakomai National College of Technology, 2.Institute of Low Temperature Science Hokkaido University)

11:30 AM - 11:45 AM

[MIS15-10] Directly observed basal sliding of Langhovde Glacier in East Antarctica during speed-up events caused by surface runoff

*Ken Kondo¹, Shin Sugiyama^2,4, Masahiro Minowa^2,3, Evgeny A. Podolskiy⁴ (1.Graduate School of Environmental Studies, Nagoya University, 2.Institute of Low Temperature Science, Hokkaido University, 3.Graduate School of Environmental Science, Hokkaido University, 4.Arctic Research Center, Hokkaido University)

11:45 AM - 12:00 PM

[MIS15-11] Model reproducibility of the warming event at the Dome Fuji station, inland of East Antarctica, in JARE44

*Kyohei Yamada¹, Jun Inoue^1,2, Naohiko Hirasawa^1,2 (1.National Institute of Polar Research, 2.Graduate University for Advanced Studies, SOKENDAI)

12:00 PM - 12:15 PM

[MIS15-12] An 11-Year Common Periodic Mass Changes in Dronning Maud Land and Amundsen Sea Embayment Driven by Solar Cycle

*Tianyan Shi¹, Jun'ichi Okuno², Yoshiya Irie¹ (1.Institute for Geothermal Sciences, Graduate School of Sciences, Kyoto University, 2.National Institute of Polar Research)

Session information