[M-IS05] Global climate change driven by the Southern Ocean and the Antarctic Ice Sheet

Sun. Jun 6, 2021 3:30 PM - 5:00 PM Ch.11 (Zoom Room 11)

convener:Osamu Seki(Institute of Low Temperature Science, Hokkaido University), Yoshifumi Nogi(National Institute of Polar Research), Akira Oka(Atmosphere and Ocean Research Institute, The University of Tokyo), Yusuke Suganuma(National institute of Polar Research), Chairperson:Hidetaka Kobayashi(Atmosphere and Ocean Research Institute, The University of Tokyo)

The Southern Ocean and Antarctic ice sheet, which are the giant reservoirs of heat, water, and materials, have a potential to play central roles in long-term global climate change. This system is composed of the following sub-systems; ice shelf which is a place of the interaction of ice sheet and ocean, flowing iceberg, seasonal sea ice zone, Antarctic bottom water which drives the thermohaline circulation, active biological production and Antarctic Circumpolar Current. These sub-systems are interacted with each other and have significant impact on changes in the global environmental system. This session aim to summarize recent observational and simulation studies from various fields relating to the past and present changes in the Antarctic Ice sheet and Southern Ocean, which are essential elements for unraveling the changes in the global climate system. Further, future science plans for understanding of the environmental changes of the Antarctic Cryosphere is also discussed.

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3:30 PM - 3:45 PM

[MIS05-12] Last Glacial Maximum Antarctic sea ice linked with global mean ocean temperature: evidence from PMIP3, PMIP4 and MIROC-4m simulations

*Tristan Vadsaria¹, Sam Sherriff-Tadano^2,1, Ayako Abe-Ouchi¹, Takashi Obase¹, Wing-Le Chan¹, Xavier Crosta³ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, Japan, 2.School of Earth and Environment, The University of Leeds, Leeds, UK, 3.Environnements et Paléoenvironnements Océanique et Continentaux, Pessac, France )

3:45 PM - 4:00 PM

[MIS05-13] Antarctic Slope Current modulates warm ocean heat intrusions towards Totten Glacier

*Yoshihiro Nakayama¹, Chad A Greene², Fernando S Paolo², Vigan Mensah¹, Hong Zhang², Haruhiko Kashiwase³, Daisuke Simizu³, Jamin S Greenbaum⁴, Donald D Blankenship⁵, Ayako Abe-Ouchi⁶, Shigeru Aoki¹ (1.Institute of Low Temperature Science, Hokkaido University, Japan, 2.NASA Jet Propulsion Laboratory, California, USA, 3.National Institute of Polar Research, Tokyo, Japan, 4.Scripps Institution of Oceanography, University of California, California USA, 5.Institute for Geophysics, University of Texas at Austin, Texas, USA, 6.Atmosphere and Ocean Research Institute, The University of Tokyo, Tokyo, Japan.)

4:00 PM - 4:15 PM

[MIS05-14] Sea Ice Variations in Coastal Amundsen Sea Affected by Ice Shelf Meltwater

*KOFAN LU¹ (1.Japan Agency for Marine-Earth Science and Technology)

4:15 PM - 4:30 PM

[MIS05-15] Observation of plagic system using a drifter off Wilkes land during sea ice melting season

*Ryosuke Makabe^1,5,2, Keigo Takahashi², Shintaro Takao³, Ryo Matsuda⁴, Masayoshi Sano¹, Kohei Mizobata⁵, Norio Kurosawa⁴, Masato Moteki^5,1, Tsuneo Odate^1,2 (1.National Institute of Polar Research, 2.The Graduate University for Advanced Studies (SOKENDAI), 3.National Institute for Environmental Studies, 4.Soka University, 5.Tokyo University of Marine Science and Technology)

4:30 PM - 4:45 PM

[MIS05-16] Primary production and carbon export related to sub-surface chlorophyll maximum off Wilkes land during post bloom season

*Norio Kurosawa¹, Ayuko Kagesawaa², Ryosuke Makabe^3,2,4, Shintaro Takao⁵, Masayoshi Sano³, Kohei Mizobata⁴, Masato Moteki^4,3, Tsuneo Odate^2,3 (1.Soka University, 2.The Graduate University for Advanced Studies (SOKENDAI), 3.National Institute of Polar Research, 4.Tokyo University of Marine Science and Technology, 5.National Institute for Environmental Studies)

4:45 PM - 5:00 PM

[MIS05-17] Contribution of fecal pellet-like dinoflagellates to the carbon sequestration in the seasonal ice zone of the Southern Ocean

*Ryo Matsuda¹, Jaekyeng Han¹, Shinya Okano¹, Masayoshi Sano², Shintaro Takao³, Ryosuke Makabe^2,4,5, Masato Moteki^4,5, Tsuneo Odate^2,4, Norio Kurosawa¹ (1.Soka University, 2.National Institute of Polar Research, 3.National Institute for Environmental Studies, 4.The Graduate University for Advanced Studies (SOKENDAI), 5.Tokyo University of Marine Science and Technology)

Session information