JpGU-AGU Joint Meeting 2017

Presentation information

[EJ] Oral

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS10] [EJ] Global climate change driven by the Southern Ocean and the Antarctic Ice Sheet

Wed. May 24, 2017 3:30 PM - 5:00 PM A02 (Tokyo Bay Makuhari Hall)

convener:Kay I.Ohshima(Institute of Low Temperature Science, Hokkaido University), Minoru Ikehara(Center for Advanced Marine Core Research, Kochi University), Kenji Kawamura(National Institute of Polar Research, Research Organization of Information and Systems), Chairperson:Minoru Ikehara(Center for Advanced Marine Core Research, Kochi University)

3:45 PM - 4:00 PM

[MIS10-13] Current climate-ice sheet studies related to Antarctica and Souther ocean ocean using Earth system modells

*Ayako Abe-Ouchi1, Fuyuki SAITO2, Masakazu Yoshimori3, Akira Oka1, Ralf Greve3, Keita Uehara1, Wing-Le Chan1 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.JAMSTEC, 3.Hokkaido University)

Keywords:paleoclimate, Climate modeling, Antarctica ice sheet

Climate-Antarctica ice sheet and Southern ocean interaction not only affects the local climate but also affect the global climate and ocean. We present some of our current modelling studies and plan using coupled atmophere and ocean model and ice sheet model. In one of our studies, Eocene experiments were carried out to test the model’s ability to reproduce proxy data and to investigate the climate system under high CO2 concentration. Furthermore, in order to investigate to what extent topographical changes are responsible for the difference between the Eocene and present day climates, we created Eocene-like geometries from the present day topography. We present the individual effects of the Drake Passage, Tasman Gateway, Antarctica Ice Sheet on the climate.