Researcher Information
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Research Areas
Research History
Research activity information
Papers
- Takashi Obase; Takanori Kodama; Takao Kawasaki; Sam Sherriff-Tadano; Daisuke Takasuka; Ayako Abe-Ouchi; Masakazu Fujii
〔Major achievements〕Climate and ocean circulation changes toward a modern snowball Earth
Climate of the Past
[Reviewed]
Lead - Yusuke Suganuma; Takuya Itaki; Yuki Haneda; Kazuya Kusahara; Takashi Obase; Takeshige Ishiwa; Takayuki Omori; Minoru Ikehara; Robert McKay; Osamu Seki; Daisuke Hirano; Masakazu Fujii; Yuji Kato; Atsuko Amano; Yuki Tokuda; Hokuto Iwatani; Yoshiaki Suzuki; Motohiro Hirabayashi; Hiroyuki Matsuzaki; Takeyasu Yamagata; Masao Iwai; Kota Katsuki; Francisco J. Jimenez-Espejo; Hiroki Matsui; Koji Seike; Moto Kawamata; Naohisa Nishida; Masato Ito; Shin Sugiyama; Jun’ichi Okuno; Takanobu Sawagaki; Ayako Abe-Ouchi; Shigeru Aoki; Hideki Miura
Antarctic ice-shelf collapse in Holocene driven by meltwater release feedbacks
Nature Geoscience, 07 Nov. 2025
18, 12, 1216, 1223
[Reviewed] - Takashi Obase; Laurie Menviel; Ayako Abe-Ouchi; Tristan Vadsaria; Ruza Ivanovic; Brooke Snoll; Sam Sherriff-Tadano; Paul J. Valdes; Lauren Gregoire; Marie-Luise Kapsch; Uwe Mikolajewicz; Nathaelle Bouttes; Didier Roche; Fanny Lhardy; Chengfei He; Bette Otto-Bliesner; Zhengyu Liu; Wing-Le Chan
Multi-model assessment of the deglacial climatic evolution at high southern latitudes
Climate of the Past, 12 Aug. 2025
[Reviewed]
Lead, Corresponding - Lynn A. Hirose; Ayako Abe‐Ouchi; Wing‐Le Chan; Ryouta O'ishi; Masakazu Yoshimori; Takashi Obase
Arctic Warming Suppressed by Remnant Glacial Ice Sheets in Past Interglacials
Geophysical Research Letters, 03 Mar. 2025
52, 5
[Reviewed] - Evan James Gowan; Tomohiko Tomita; Daiki Nishioka; Xu Zhang; Yong Sun; Xiaoxu Shi; Gregor Knorr; Uta Krebs-Kanzow; Paul Gierz; Gerrit Lohmann; Takashi Obase; Yuta Kuniyoshi; Ayako Abe-Ouchi
Impact of topographic change on the East Asian monsoon in Japan and Eastern Asia during the Last Glacial Maximum
Progress in Earth and Planetary Science, 26 Feb. 2025
12, 1
[Reviewed] - Brooke Snoll; Ruza Ivanovic; Lauren Gregoire; Sam Sherriff-Tadano; Laurie Menviel; Takashi Obase; Ayako Abe-Ouchi; Nathaelle Bouttes; Chengfei He; Feng He; Marie Kapsch; Uwe Mikolajewicz; Juan Muglia; Paul Valdes
A multi-model assessment of the early last deglaciation (PMIP4 LDv1): a meltwater perspective
Climate of the Past, 05 Apr. 2024
[Reviewed] - Hidetaka Kobayashi; Akira Oka; Takashi Obase; Ayako Abe-Ouchi
Assessing transient changes in the ocean carbon cycle during the last deglaciation through carbon isotope modeling
Climate of the Past, 02 Apr. 2024
20, 3, 769, 787
[Reviewed] - Ralf Greve; Christopher Chambers; Takashi Obase; Fuyuki Saito; Wing-Le Chan; Ayako Abe-Ouchi
Future projections for the Antarctic ice sheet until the year 2300 with a climate-index method
Journal of Glaciology, 11 Jul. 2023
1, 11
[Reviewed] - Takashi Obase; Ayako Abe-Ouchi; Fuyuki Saito; Shun Tsutaki; Shuji Fujita; Kenji Kawamura; Hideaki Motoyama
A one-dimensional temperature and age modeling study for selecting the drill site of the oldest ice core near Dome Fuji, Antarctica
The Cryosphere, 29 Jun. 2023
17, 6, 2543, 2562
[Reviewed]
Lead, Corresponding - Alexandre Cauquoin; Ayako Abe-Ouchi; Takashi Obase; Wing-Le Chan; André Paul; Martin Werner
Effects of LGM sea surface temperature and sea ice extent on the isotope-temperature slope at polar ice core sites
Climate of the Past, 24 Jan. 2023
[Reviewed] - Yusuke Suganuma; Heitaro Kaneda; Martim Mas e Braga; Takeshige Ishiwa; Takushi Koyama; Jennifer C. Newall; Jun’ichi Okuno; Takashi Obase; Fuyuki Saito; Irina Rogozhina; Jane Lund Andersen; Moto Kawamata; Motohiro Hirabayashi; Nathaniel A. Lifton; Ola Fredin; Jonathan M. Harbor; Arjen P. Stroeven; Ayako Abe-Ouchi
Regional sea-level highstand triggered Holocene ice sheet thinning across coastal Dronning Maud Land, East Antarctica
Communications Earth & Environment, 09 Nov. 2022
3, 1
[Reviewed] - Christopher Chambers; Ralf Greve; Takashi Obase; Fuyuki Saito; Ayako Abe-Ouchi
Mass loss of the Antarctic ice sheet until the year 3000 under a sustained late-21st-century climate
JOURNAL OF GLACIOLOGY, Jun. 2022
68, 269, 605, 617
[Reviewed] - Takashi Obase; Ayako Abe-Ouchi; Fuyuki Saito
Abrupt climate changes in the last two deglaciations simulated with different Northern ice sheet discharge and insolation
Scientific Reports, 25 Nov. 2021
11, 1
[Reviewed]
Lead - Shun Tsutaki; Shuji Fujita; Kenji Kawamura; Ayako Abe-Ouchi; Kotaro Fukui; Hideaki Motoyama; Yu Hoshina; Fumio Nakazawa; Takashi Obase; Hiroshi Ohno; Ikumi Oyabu; Fuyuki Saito; Konosuke Sugiura; Toshitaka Suzuki
High-resolution subglacial topography around Dome Fuji, Antarctica, based on ground-based radar surveys conducted over 30 years
The Cryosphere, 20 Sep. 2021
16, 7, 2967, 2983
[Reviewed] - Christo Buizert; T. J. Fudge; William H. G. Roberts; Eric J. Steig; Sam Sherriff-Tadano; Catherine Ritz; Eric Lefebvre; Jon Edwards; Kenji Kawamura; Ikumi Oyabu; Hideaki Motoyama; Emma C. Kahle; Tyler R. Jones; Ayako Abe-Ouchi; Takashi Obase; Carlos Martin; Hugh Corr; Jeffrey P. Severinghaus; Ross Beaudette; Jenna A. Epifanio; Edward J. Brook; Kaden Martin; Jérôme Chappellaz; Shuji Aoki; Takakiyo Nakazawa; Todd A. Sowers; Richard B. Alley; Jinho Ahn; Michael Sigl; Mirko Severi; Nelia W. Dunbar; Anders Svensson; John M. Fegyveresi; Chengfei He; Zhengyu Liu; Jiang Zhu; Bette L. Otto-Bliesner; Vladimir Y. Lipenkov; Masa Kageyama; Jakob Schwander
Antarctic surface temperature and elevation during the Last Glacial Maximum
Science, 04 Jun. 2021
372, 6546, 1097, 1101
[Reviewed] - Fuyuki Saito; Takashi Obase; Ayako Abe-Ouchi
Implementation of RCIP scheme and its performance for 1D age computations in ice-sheet models
Geoscientific Model Development, 04 Mar. 2020
[Reviewed] - Takashi Obase; Ayako Abe‐Ouchi
Abrupt Bølling‐Allerød Warming Simulated under Gradual Forcing of the Last Deglaciation
Geophysical Research Letters, 28 Oct. 2019
46, 20, 11397, 11405
[Reviewed]
Lead - Takashi Obase; Ayako Abe-Ouchi; Kazuya Kusahara; Hiroyasu Hasumi; Rumi Ohgaito
Responses of Basal Melting of Antarctic Ice Shelves to the Climatic Forcing of the Last Glacial Maximum and CO2 Doubling
JOURNAL OF CLIMATE, May 2017
30, 10, 3473, 3497
[Reviewed]
Lead - Kazuya Kusahara; Tatsuru Sato; Akira Oka; Takashi Obase; Ralf Greve; Ayako Abe-Ouchi; Hiroyasu Hasumi
Modelling the Antarctic marine cryosphere at the Last Glacial Maximum
ANNALS OF GLACIOLOGY, 2015
56, 69, 425, 435
[Reviewed]
Misc.
- Masa Kageyama; Ayako Abe-Ouchi; Takashi Obase; Gilles Ramstein; Paul J. Valdes
Modeling the climate of the Last Glacial Maximum from PMIP1 to PMIP4
Past Global Changes Magazine, Nov. 2021
29, 2 - Ralf Greve; Reinhard Calov; Takashi Obase; Fuyuki Saito; Shun Tsutaki; Ayako Abe-Ouchi
ISMIP6 future projections for the Antarctic ice sheet with the model SICOPOLIS
Zenodo, Sep. 2020
3971232
Presentations
- Takashi Obase; Ayako Abe-Ouchi; Fuyuki Saito; Ryouta Oishi; Wing-Le Chan
Developments toward coupled climate and ice sheet simulations using MIROC and IcIES
CMIP community workshop 2026, 10 Mar. 2026 - K. Taniguchi; T. Kodama; T. Higuchi; T. Obase; H. Genda
Effects of salinity on tidally-locked aqua planets’ climate with a coupled atmosphere and ocean GCM
07 Sep. 2025 - 小長谷貴志; 阿部彩子; 齋藤冬樹; 大石龍太; 陳永利
Developments toward coupled climate and ice sheet simulations using MIROC and IcIES
雪氷研究大会, 08 Sep. 2025 - Takashi Obase; Ayako Abe-Ouchi; Fuyuki Saito; Ryouta O’ishi; Wing-Le Chan
Developments of ice sheet model IcIES for Antarctic and Greenland configuration, BACO-25
BACO-25, 23 Jul. 2025 - K. Taniguchi; T. Kodama; T. Higuchi; T. Obase; H. Genda
Effect of salinity on ocean planet climate
07 Jul. 2025 - Takashi Obase; Ayako Abe-Ouchi; Fuyuki Saito; Ryouta Oishi; Wing-Le Chan
Developments toward coupled climate and ice sheet simulations using MIROC and IcIES
地球惑星科学連合大会, 29 May 2025, [Invited] - Takashi Obase; Ayako Abe-Ouchi; Fuyuki Saito; Ryouta O’ishi; Wing-Le Chan
Developments toward coupled climate and ice sheet simulations using MIROC and IcIES
AGU24 fall meeting, 11 Dec. 2024 - 小長谷貴志
退氷期の気候変化のマルチモデル比較研究: 南半球高緯度域温度変化の要因
日本気象学会2024年度秋季大会, 14 Nov. 2024 - Takashi Obase; Takanori Kodama; Takao Kawasaki; Sam Sherriff-Tadano
Climate system on snowball planets revealed by MIROC4m
JPGU meeting 2024, 28 May 2024
