[M-IS06] Global climate change driven by the Southern Ocean and the Antarctic Ice Sheet

[MIS06-P12] Paleoenvironmental reconstruction using Antarctic ice cores: FY2017 activities

*Kenji Kawamura^1,2,3, Ryu Uemura⁴, Hideaki Motoyama^1,2, Iizuka Yoshinori⁵, Kazuho Horiuchi⁶, Shuji Aoki⁷, Kumiko Goto-Azuma^1,2, Shuji Fujita^1,2, Osamu Seki⁵, Motohiro Hirabayashi¹, Fumio Nakazawa^1,2, Ikumi Oyabu¹, Hiroshi Ohno⁸, Shun Tsutaki⁹, Ayako Abe-Ouchi⁹ (1.National Institute of Polar Research, Research Organization of Information and Systems, 2.SOKENDAI, 3.Japan Agency for Marine-Earth Science and Technoloty, 4.University of the Ryukyus, 5.Hokkaido University, 6.Hirosaki University, 7.Tohoku University, 8.Kitami Institute of Technology, 9.University of Tokyo)

Keywords:Ice core, Paleoclimate / Paleoenvironment

A KAKENHI project "Giant reservoirs of heat/water/material : Global environmental changes driven by Southern Ocean and Antarctic Ice Sheet", has started, and its subprojects include "Variations and interactions of climate and the Antarctic Ice Sheet". As a part of this subproject, ice cores from Dome Fuji and coastal areas, as well as marine sediment cores, will be analyzed to reconstruct paleoenviroment in various time scales. In particular, reconstructions are focused on the past atmospheric CO₂ for model input, stable isotopes of H₂O and noble gases for temperature reconstructions, aerosols for radiative forcing and biogeochemical cycles, and atmospheric CH₄ for understanding climatic instabilities. Ice core chronology will be improved and compared with model outputs and marine sediment records. Process studies for sea ice reconstruction will also be conducted. In this presentation, major FY2017 activities will be summarised.