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

Tue. May 27, 2025 9:00 AM - 10:30 AM 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:Kazuya Kusahara(Japan Agency for Marine-Earth Science and Technology)

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

9:00 AM - 9:15 AM

[MIS15-01] Emerging outflow of not-so-dense shelf water from an East Antarctic polynya

★Invited Papers

*Kaihe Yamazaki¹ (1.University of Tasmania)

9:15 AM - 9:30 AM

[MIS15-02] Processes of Dense Shelf Water variability and Its Mixing with offshore warm water in the Cape Darnley Polynya toward the formation of Antarctic Bottom Water

*Masashi Machida¹, Kay I. Ohshima², Daisuke Simizu³, Kazuki Nakata⁴, Mizuki Kuga², Vigan Mensah², Alexander Fraser⁵, Kohei Mizobata⁶, Takeshi Tamura³, Yasushi Fukamachi⁷ (1.Graduate School of Env. Science, Hokkaido University, 2.Institute of Low Temperature Science, Hokkaido University, 3.National Institute of Polar Research, 4.Japan Aerospace Exploration Agency, 5.Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, 6.Tokyo University of Marine Science and Technology, 7.Arctic Research Center, Hokkaido University)

9:30 AM - 9:45 AM

[MIS15-03] Argo floats unveil the Southern Ocean warming

*Hatsumi Nishikawa¹, Kazuya Kusahara¹, Maki Noguchi Aita¹, Naomi Harada² (1.Japan Agency for Marine-Earth Science and Technology, 2.The University of Tokyo)

9:45 AM - 10:00 AM

[MIS15-04] Observatinal evidences of poleward heat transport in the Australian-Antarctic Basin

*Kohei Mizobata¹, Daisuke Hirano², Ryosuke Makabe², Yutaka Watanabe³, Yoshiyuki Nakano⁴, Kitade Yujiro¹, Shigeru Aoki³ (1.Tokyo University of Marine Science and Technology, 2.National Institute of Polar Research, 3.Hokkaido Univesity, 4.Japan Agency for Marine-Earth Science and Technology)

10:00 AM - 10:15 AM

[MIS15-05] Source waters of Antarctic Bottom Water observed in the east Weddell-Enderby Basin (55°E)

*Katsuro Katsumata¹, Shigeru Aoki², Kay I. Ohshima², Michiyo Yamamoto-Kawai³ (1.University of Tokyo, 2.Hokkaido University, 3.Tokyo University of Marine Science and Technologh)

10:15 AM - 10:30 AM

[MIS15-06] Role of anthropogenic forcing in Antarctic sea ice variability simulated in climate models

*Yushi Morioka¹, Liping Zhang^2,3, William Cooke², Masami Nonaka¹, Swadhin Behera¹, Syukuro Manabe⁴ (1.Application Laboratory, JAMSTEC, 2.Geophysical Fluid Dynamics Laboratory, NOAA, 3.University Corporation for Atmospheric Research, 4.Atmospheric and Oceanic Sciences Program, Princeton University)

Session information