[M-IS20] Global climate change driven by the Southern Ocean and the Antarctic Ice Sheet

Wed. May 25, 2022 10:45 AM - 12:15 PM 104 (International Conference Hall, Makuhari Messe)

convener:Osamu Seki(Institute of Low Temperature Science, Hokkaido University), convener:Yusuke Suganuma(National institute of Polar Research), Masahiro Minowa(Institute of Low Temperature Science, Hokkaido University), Chairperson:Keiko Takehara(Kochi university Graduate School of Integrated Arts and Sciences), Ryo Inoue(The Graduate University for Advanced Studies)

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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10:45 AM - 11:00 AM

[MIS20-07] Changes in Southern Ocean phytoplankton biomass linked to climate variability

★Invited Papers

*Shintaro Takao¹, Kohei Mizobata², Ryosuke Makabe^3,2, Toru Hirawake³ (1.National Institute for Environmental Studies, 2.Tokyo University of Marine Science and Technology, 3.National Institute of Polar Research)

11:00 AM - 11:15 AM

[MIS20-08] Zooplankton vertical distribution during sea ice melting season in the Southern Ocean

*Ryosuke Makabe^1,2,3, Masato Ito¹, Ryo Matsuda⁴, Chiho Tsuchiya³, Keigo D Takahashi², Keishi Shimada³, Shintaro Takao⁵, Masayoshi Sano¹, Kohei Mizobata³, Norio Kurosawa⁴, Masato Moteki^1,3 (1.National Institute of Polar Research, 2.SOKENDAI, 3.Tokyo University of Marine Science and Technology, 4.Soka University, 5.National Institute of Environmental Studies)

11:15 AM - 11:30 AM

[MIS20-09] Horizontal diffusion due to medium-scale eddies in Meridional Ocean Circulation of Southern Ocean

*Kitade Yujiro¹, Kohei Mizobata¹, Keishi Shimada², Shigeru Aoki³, Hiroshi Uchida⁴ (1. Graduate School, Tokyo University of Marine Science and Technology, 2.Tokyo University of Marine Science and Technology, 3.Hokkaido University, 4.Japan Agency for Marine-Earth Science and Technology)

11:30 AM - 11:45 AM

[MIS20-10] Relationship between Southern Annular Mode and poleward ocean heat transport toward East Antarctic ice shelf

*Kohei Mizobata¹, Shintaro Takao², Daisuke Hirano³, Jun Inoue³, Shigeru Aoki⁴, Ryosuke Makabe³ (1.Tokyo University of Marine Science and Technology, 2.National Institute for Environmental Studies, 3.National Institute of Polar Research, 4. Institute of Low Temperature Science, Hokkaido University)

11:45 AM - 12:00 PM

[MIS20-11] Consideration of Cape Darnley Bottom Water inflow-index based on Grain Size and Mineral Composition of deep-sea sediments in Cape Darnley, East Antarctica

*Keiko Takehara¹, Naohisa Nishida², Go-Ichiro Uramoto³, Minoru Ikehara³ (1.Kochi university Graduate School of Integrated Arts and Sciences, 2.Natural Sciences Division, Tokyo Gakugei University, 3.Center for Advanced Marine Core Research, Kochi University)

12:00 PM - 12:15 PM

[MIS20-12] Modeling the ocean carbon cycle during the last deglaciation part II

*Hidetaka Kobayashi¹, Akira Oka¹, Takashi Obase¹, Ayako Abe-Ouchi¹ (1.Atmosphere and Ocean Research Institute, The University of Tokyo)

Session information