17:15 〜 19:15
[MIS15-P02] 温暖化時代の南極氷床―海洋相互作用の解明：2024年度成果報告
キーワード：南大洋、氷床融解、氷床海洋相互作用、東南極、気候変動
The global warming signal is becoming more pronounced not only in the mid-and low-latitudes but also in the Antarctic region. In particular, the accelerated melting and mass loss of the Antarctic Ice Sheet will have a significant impact on human society through rising sea levels, etc. Therefore, understanding and grasping the actual situation is an extremely important issue from both scientific and social perspectives.
The planned research project, “Antarctic ice sheet-ocean interactions in the era of global warming,” conducted as part of the JSPS-funded “Global Antarctic Science” project (https://glaces.lowtem.hokudai.ac.jp/en/),” aims to elucidate the interaction mechanisms between the ice sheet and the ocean, which play a key role in Antarctic ice sheet fluctuations. First, we will focus on the Totten Glacier area in East Antarctica, a region of increasing instability, integrating in-situ and satellite observations with numerical modelling to investigate the ocean-driven ice shelf melting process in the East Antarctic region. Additionally, numerical modelling will be used to reproduce the fluctuations in ice shelf melting over the past few decades and predict changes several decades into the near future. Through the combined approach of observation and numerical modelling, we aim to clarify the actual state of the ocean-sea ice-ice sheet interaction responsible for the rapid mass loss of the Antarctic Ice Sheet in the era of global warming and assess their large-scale impacts on the global ocean and climate systems, originating from changes in the Antarctic Ice Sheet and the Southern Ocean.
This presentation will provide an overview of the major research and observation activities of this project in the 2024 fiscal year.
The planned research project, “Antarctic ice sheet-ocean interactions in the era of global warming,” conducted as part of the JSPS-funded “Global Antarctic Science” project (https://glaces.lowtem.hokudai.ac.jp/en/),” aims to elucidate the interaction mechanisms between the ice sheet and the ocean, which play a key role in Antarctic ice sheet fluctuations. First, we will focus on the Totten Glacier area in East Antarctica, a region of increasing instability, integrating in-situ and satellite observations with numerical modelling to investigate the ocean-driven ice shelf melting process in the East Antarctic region. Additionally, numerical modelling will be used to reproduce the fluctuations in ice shelf melting over the past few decades and predict changes several decades into the near future. Through the combined approach of observation and numerical modelling, we aim to clarify the actual state of the ocean-sea ice-ice sheet interaction responsible for the rapid mass loss of the Antarctic Ice Sheet in the era of global warming and assess their large-scale impacts on the global ocean and climate systems, originating from changes in the Antarctic Ice Sheet and the Southern Ocean.
This presentation will provide an overview of the major research and observation activities of this project in the 2024 fiscal year.