北海道大学, 地球環境科学科, Mar. 2007

Numerical modeling

Southern Ocean

Ocean-Cryosphere interaction

Physical oceanography

Natural sciences, Atmospheric and hydrospheric science, Physical oceanography

Apr. 2018 - Present
Japan Agency for Marine-Earth Science Technology (JAMSTEC), Scientist

Apr. 2018 - Jun. 2019
Antarctic Climate & Ecosystems Cooperative Research Centre (ACE CRC), University of Tasmania, University Associate

Feb. 2015 - Mar. 2018
Antarctic Climate & Ecosystems Cooperative Research Centre (ACE CRC), University of Tasmania, Postdoctoral Fellow

Apr. 2013 - Feb. 2015
Institute of Low Temperature Science, Hokkaido University, Project Assistant Professor

Aug. 2007 - Mar. 2013
Atmosphere and Ocean Research Institute (AORI), the University of Tokyo, Postdoctoral Fellow

Benjamin K. Galton-Fenzi; Richard Porter-Smith; Sue Cook; Eva Cougnon; David E. Gwyther; Wilma G. C. Huneke; Madelaine G. Rosevear; Xylar Asay-Davis; Fabio Boeira Dias; Michael S. Dinniman; David Holland; Kazuya Kusahara; Kaitlin A. Naughten; Keith W. Nicholls; Charles Pelletier; Ole Richter; Hélène Seroussi; Ralph Timmermann
Multi-model estimate of Antarctic ice-shelf basal mass budget and ocean drivers
The Cryosphere, 04 Dec. 2025
19, 12, 6507, 6525
[Reviewed]

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, Dec. 2025

K. Kusahara; H. Tatebe
〔Major achievements〕Causes of the Abrupt and Sustained 2016–2023 Antarctic Sea‐Ice Decline: A Sea Ice–Ocean Model Perspective
Geophysical research letters, 16 Aug. 2025
[Reviewed]
Lead, Corresponding

K. Mizobata; D. Hirano; K. Kusahara; S. Aoki; J. Inoue; S. Takao; R. Makabe
Ocean response along the east antarctic coastal margin to the southern ocean annular mode
Geophysical research letters, Mar. 2025
52, e2024GL112914.
[Reviewed]

Kazuya Kusahara; Daisuke Hirano; Masakazu Fujii; Alexander D. Fraser; Takeshi Tamura; Kohei Mizobata; Guy D. Williams; Shigeru Aoki
〔Major achievements〕Modeling seasonal-to-decadal ocean–cryosphere interactions along the Sabrina Coast, East Antarctica
The Cryosphere, 03 Jan. 2024
18, 1, 43, 73
[Reviewed]
Lead, Corresponding

Yoshihiko Ohashi; Michiyo Yamamoto-Kawai; Kazuya Kusahara; Ken'ichi Sasaki; Kay I. Ohshima
Circumpolar distributions of age and anthropogenic CO2 content of Antarctic Bottom Water revealed by chlorofluorocarbon and sulfur hexafluoride
Progress in Oceanography, Dec. 2023
219, 103153, 103153
[Reviewed]

Kazuya Kusahara; Hiroaki Tatebe
〔Major achievements〕Basin-scale tracer replacement timescales in a one-degree global OGCM
Frontiers in Marine Science, 17 Nov. 2023
10
[Reviewed]
Lead, Corresponding

A. D. Fraser; P. Wongpan; P. J. Langhorne; A. R. Klekociuk; K. Kusahara; D. Lannuzel; R. A. Massom; K. M. Meiners; K. M. Swadling; D. P. Atwater; G. M. Brett; M. Corkill; L. A. Dalman; S. Fiddes; A. Granata; L. Guglielmo; P. Heil; G. H. Leonard; A. R. Mahoney; A. McMinn; P. van der Merwe; C. K. Weldrick; B. Wienecke
Antarctic Landfast Sea Ice: A Review of Its Physics, Biogeochemistry and Ecology
Reviews of Geophysics, 23 Jun. 2023
61, 2
[Reviewed], [Invited]

Kazuya Kusahara; Hiroaki Tatebe; Tomohiro Hajima; Fuyuki Saito; Michio Kawamiya
〔Major achievements〕Antarctic Sea Ice Holds the Fate of Antarctic Ice-Shelf Basal Melting in a Warming Climate
Journal of Climate, 01 Feb. 2023
36, 3, 713, 743
[Reviewed]
Lead, Corresponding

Hirano, D; T. Tamura; K. Kusahara; M. Fujii; K. Yamazaki; Y. Nakayama; K. Ono; T. Itaki; Y. Aoyama; D. Simizu; K. Mizobata; K. I. Ohshima; Y. Nogi; S. R. Rintoul; E. Wijk; J. S. Greenbaum; D. D. Blankenship; K. Saito; S. Aoki
On-Shelf Circulation of Warm Water Toward the Totten Ice Shelf, East Antarctica
Nature Communications, 2023
14, 4995
[Reviewed]

Shigeru Aoki; Tomoki Takahashi; Kaihe Yamazaki; Daisuke Hirano; Kazuya Ono; Kazuya Kusahara; Takeshi Tamura; Guy D. Williams
Warm surface waters increase Antarctic ice shelf melt and delay dense water formation
Communications Earth & Environment, Dec. 2022
3, 1

Alexander D. Fraser; Pat Wongpan; Patricia Jean Langhorne; Andrew R. Klekociuk; Kazuya Kusahara; Delphine Lannuzel; Robert A. Massom; Klaus M Meiners; Kerrie Swadling; Daniel P Atwater; Gemma Brett; Matthew Jeremy Corkill; Laura Dalman; Sonya L Fiddes; Antonia Granata; Letterio Guglielmo; Petra Heil; Gregory H Leonard; Andrew Richard Mahoney; Andrew McMinn; Pier van der Merwe; Christine Kim Weldrick; Barbara Wienecke
Antarctic landfast sea ice: Physical, biogeochemical and ecological significance
24 Oct. 2022

Yoshihiko Ohashi; Michiyo Yamamoto-Kawai; Kazuya Kusahara; Ken'ichi Sasaki; Kay Ohshima
Age distribution of Antarctic Bottom Water off Cape Darnley, East Antarctica, estimated using chlorofluorocarbon and sulfur hexafluoride
SCIENTIFIC REPORTS, May 2022
12, 1

Tatsuo Suzuki; Yoshiki Komuro; Kazuya Kusahara; Hiroaki Tatebe
Transient Influence of the Reduction of Deepwater Formation on Ocean Heat Uptake and Heat Budgets in the Global Climate System
Geophysical Research Letters, 16 Feb. 2022
49, 3

Devi Veytia; Sophie Bestley; Klaus Meiners; So Kawaguchi; Eugene Murphy; Kazuya Kusahara; Stuart Corney
Quality of sea-ice habitat traversed by antarctic krill larvae influences recruitment success
02 Feb. 2022

Devi Veytia; Sophie Bestley; So Kawaguchi; Klaus M. Meiners; Eugene J. Murphy; Alexander D. Fraser; Kazuya Kusahara; Noriaki Kimura; Stuart Corney
Overwinter sea-ice characteristics important for Antarctic krill recruitment in the southwest Atlantic
Ecological Indicators, Oct. 2021
129, 107934, 107934

Kazuya Kusahara
〔Major achievements〕Summertime linkage between Antarctic sea-ice extent and ice-shelf basal melting through Antarctic coastal water masses’ variability: a circumpolar Southern Ocean model study
Environmental research letters, 01 Jul. 2021
16, 7, 074042, 074042
[Reviewed]
Lead, Corresponding

Kazuya Kusahara; Daisuke Hirano; Masakazu Fujii; Alexander D. Fraser; Takeshi Tamura
〔Major achievements〕Modeling intensive ocean–cryosphere interactions in Lützow-Holm Bay, East Antarctica
The Cryosphere, 07 Apr. 2021
15, 4, 1697, 1717
[Reviewed]
Lead, Corresponding

Suganuma Yusuke; Haneda Yuki; Itaki Takuya; Ishiwa Takeshige; Fujii Masakazu; Kato Yuji; Omori Takayuki; Amano Atsuko; Iwai Masao; Nishida Naoshisa; Kusahara Kazuya; Hirano Daisuke; Seki Mosamu; Katsuki Kota; Kawamata Moto; Matsui Hiroki; Okuno Jyun'ichi; Ikehara Minoru; Miura Hideki
Reconstruction of ice sheet history since the LGH in Lutzow Holm Bay, East Antarctica revealed by sedimentological records
Annual Meeting of the Geological Society of Japan, 2021
2021, 101

Mar C. Arroyo; Elizabeth H. Shadwick; Bronte Tilbrook; Stephen R. Rintoul; Kazuya Kusahara
A Continental Shelf Pump for CO2 on the Adélie Land Coast, East Antarctica
Journal of geophysical research: Oceans, 22 Oct. 2020
125, 10
[Reviewed]

Kazuya Kusahara
〔Major achievements〕Interannual-to-Multidecadal Responses of Antarctic Ice Shelf–Ocean Interaction and Coastal Water Masses during the Twentieth Century and the Early Twenty-First Century to Dynamic and Thermodynamic Forcing
Journal of climate, 15 Jun. 2020
33, 12, 4941, 4973
[Reviewed]
Lead, Corresponding

Gwyther, D.E.; Kusahara, K.; Asay-Davis, X.S.; Dinniman, M.S.; Galton-Fenzi, B.K.
Vertical processes and resolution impact ice shelf basal melting: A multi-model study
Ocean Modelling, 2020
147
[Reviewed]

Hirano, D.; Tamura, T.; Kusahara, K.; Ohshima, K.I.; Nicholls, K.W.; Ushio, S.; Simizu, D.; Ono, K.; Fujii, M.; Nogi, Y.; Aoki, S.
Strong ice-ocean interaction beneath Shirase Glacier Tongue in East Antarctica
Nature Communications, 2020
11, 1
[Reviewed]

Alessandro Silvano; Stephen R. Rintoul; Kazuya Kusahara; Beatriz Peña‐Molino; Esmee van Wijk; David E. Gwyther; Guy D. Williams
Seasonality of warm water intrusions onto the continental shelf near the totten glacier
Journal of geophysical research: Oceans, 03 Jun. 2019
124, 6, 4272, 4289
[Reviewed]

Kazuya Kusahara; Guy D. Williams; Robert Massom; Philip Reid; Hiroyasu Hasumi
〔Major achievements〕Spatiotemporal dependence of Antarctic sea ice variability to dynamic and thermodynamic forcing: a coupled ocean–sea ice model study
Climate dynamics, 12 Apr. 2019
52, 7-8, 3791, 3807
[Reviewed]
Lead, Corresponding

Kazuya Kusahara; Phillip Reid; Guy D Williams; Robert Massom; Hiroyasu Hasumi
〔Major achievements〕An ocean-sea ice model study of the unprecedented Antarctic sea ice minimum in 2016
Environmental research letters, 15 Aug. 2018
13, 8, 084020, 084020
[Reviewed]
Lead, Corresponding

S. Aoki; R. Kobayashi; S. R. Rintoul; T. Tamura; K. Kusahara
Changes in water properties and flow regime on the continental shelf off the Adélie/George VLand coast, East Antarctica, after glacier tongue calving
Journal of Geophysical Research: Oceans, 13 Aug. 2017
122, 8, 6277, 6294
[Reviewed]

Kazuya Kusahara; Guy D. Williams; Takeshi Tamura; Robert Massom; Hiroyasu Hasumi
〔Major achievements〕Dense shelf water spreading from Antarctic coastal polynyas to the deep Southern Ocean: A regional circumpolar model study
Journal of Geophysical Research: Oceans, 04 Aug. 2017
122, 8, 6238, 6253
[Reviewed]
Lead, Corresponding

Kazuya Kusahara
Responses of Basal Melting of Antarctic Ice Shelves to the Climatic Forcing of the Last Glacial Maximum and CO2 Doubling
Journal of Climate, 15 May 2017
30, 10, 3473, 3497
[Reviewed]

Kusahara, K.; Williams, G.D.; Massom, R.; Reid, P.; Hasumi, H.
〔Major achievements〕Roles of wind stress and thermodynamic forcing in recent trends in Antarctic sea ice and Southern Ocean SST: An ocean-sea ice model study
Global and Planetary Change, 2017
158, 103, 118
[Reviewed]
Lead, Corresponding

Kazuya Kusahara
〔Major achievements〕Modeling Ocean–Cryosphere Interactions off Adélie and George V Land, East Antarctica
Journal of Climate, Jan. 2017
30, 1, 163, 188
[Reviewed]
Lead, Corresponding

Yokoyama, Y.; Anderson, J.B.; Yamane, M.; Simkins, L.M.; Miyairi, Y.; Yamazaki, T.; Koizumi, M.; Suga, H.; Kusahara, K.; Prothro, L.; Hasumi, H.; Southon, J.R.; Ohkouchi, N.
Widespread collapse of the Ross Ice Shelf during the late Holocene
Proceedings of the National Academy of Sciences of the United States of America, 2016
113, 9, 2354, 2359
[Reviewed]

Bracegirdle, Thomas J; Barr; , Nicholas E; Kusahara, Kazuya; others
Predicting Antarctic climate using climate models
Antarctic environments portal, 2016
[Reviewed]

Kusahara, K.
〔Major achievements〕Cryosphere: Warming ocean erodes ice sheets
Nature Climate Change, 2016
6, 1, 22, 23
[Invited]

Bracegirdle, T.J.; Bertler, N.A.N.; Carleton, A.M.; Ding, Q.; Fogwill, C.J.; Fyfe, J.C.; Hellmer, H.H.; Karpechko, A.Y.; Kusahara, K.; Larour, E.; Mayewski, P.A.; Meier, W.N.; Polvani, L.M.; Russell, J.L.; Stevenson, S.L.; Turner, J.; Van Wessem, J.M.; Van De Berg, W.J.; Wainer, I.
A multidisciplinary perspective on climate model evaluation for antarctica
Bulletin of the American Meteorological Society, 2016
97, 2, ES23, ES26
[Reviewed]

Kusahara, K.; Sato, T.; Oka, A.; Obase, T.; Greve, R.; Abe-Ouchi, A.; Hasumi, H.
〔Major achievements〕Modelling the Antarctic marine cryosphere at the Last Glacial Maximum
Annals of Glaciology, 2015
56, 69, 425, 435
[Reviewed]
Lead, Corresponding

Kusahara, Kazuya; Hasumi, Hiroyasu
〔Major achievements〕Pathways of basal meltwater from Antarctic ice shelves: A model study
Journal of Geophysical Research: Oceans, 2014
119, 9, 5690, 5704
[Reviewed]
Lead, Corresponding

Kusahara, Kazuya; Ohshima, Kay I
〔Major achievements〕Kelvin Waves around Antarctica
Journal of Physical Oceanography, 2014
44, 11, 2909, 2920
[Reviewed]
Lead, Corresponding

Kusahara, K.; Hasumi, H.
〔Major achievements〕Modeling Antarctic ice shelf responses to future climate changes and impacts on the ocean
Journal of Geophysical Research: Oceans, 2013
118, 5, 2454, 2475
[Reviewed]
Lead, Corresponding

KUSAHARA KAZUYA; HASUMI HIROYASU
Response of Antarctic ice shelves to atmospheric warming
Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research, 2012
2012, 91, 91

Kusahara, K.; Hasumi, H.; Williams, G.D.
〔Major achievements〕Impact of the Mertz Glacier Tongue calving on dense water formation and export
Nature Communications, 2011
2, 1, 159, 159
[Reviewed]
Lead, Corresponding

Kusahara, K.; Hasumi, H.; Williams, G.D.
〔Major achievements〕Dense shelf water formation and brine-driven circulation in the Adélie and George V Land region
Ocean Modelling, 2011
37, 3-4, 122, 138
[Reviewed]
Lead, Corresponding

Kusahara, Kazuya; Hasumi, Hiroyasu; Tamura, Takeshi
〔Major achievements〕Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica
Journal of Geophysical Research, 2010
115, C10
[Reviewed]
Lead, Corresponding

Kusahara, K.; Ohshima, K.I.
〔Major achievements〕Dynamics of the wind-driven sea level variation around Antarctica
Journal of Physical Oceanography, 2009
39, 3, 658, 674
[Reviewed]
Lead, Corresponding

Kusahara, Kazuya; Ohshima, Kay I; Katsumata, Katsurou
〔Major achievements〕Two-layer model of wind-driven circulation in the Antarctic Ocean
Polar meteorology and glaciology, 2003
17, 36, 47
[Reviewed]
Lead, Corresponding

D Gwyther; S Cook; B Galton-Fenzi; A Fraser; F Graham; K Kusahara; A Treverrow; LM Jong; J Roberts; S Rintoul; A Worby; T van Ommen
Position analysis: the Antarctic ice sheet and sea level　　　　　　　　　　　　　　　
2017

草原 和弥
〔主要な業績〕棚氷と海洋の相互作用 (第五章 海洋物理・海氷)　　　　　　　　　　　　　　　
低温環境の科学事典, 2016

草原 和弥
〔主要な業績〕棚氷と海洋の相互作用 (第７章)　　　　　　　　　　　　　　　
低温科学便覧, 2015

Sato Tatsuru; Kusahara Kazuya; Greve Ralf
Evolution of the Antarctic ice sheet with varid sub-ice-shelf mass balance
Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research, 2014
2014, 0, 54, 54

Kazuya Kusahara
〔Major achievements〕(Heat sources for basal melting of Antarctic ice shelves　　　　　　　　　　　　　　　
北海道の雪氷, 2013

佐藤建; GREVE Ralf; 草原和弥; 羽角博康
南極氷床変動への棚氷,海洋からの影響―SeaRISE実験および海洋モデル,衛星データ等の応用―
雪氷研究大会講演要旨集, 10 Sep. 2012
2012, 162, 162

草原 和弥; 羽角 博康
〔Major achievements〕Modeling coastal polynyas around Antarctica
Kaiyo monthly, 2010
54, 52, 60

草原 和弥; 羽角 博康
〔主要な業績〕南極沿岸ポリニヤのモデリング　　　　　　　　　　　　　　　
月間海洋, 2010
号外55, 52, 60

NAKADA Satoshi; ISODA Yutaka; KUSAHARA Kazuya; Satoshi Nakada; Yutaka Isoda; Kazuya Kusahara; KCS Co. Ltd; Graduate School; of; Fisheries Sciences; Hokkaido University; Graduate School of Environmental Earth Sciences Hokkaido University
Response of the Coastal Branch Flow to Alongshore Variation in Shelf Topography off Toyama Bay
海の研究 = Umi no Kenkyu (Oceanography in Japan), 05 Mar. 2002
11, 2, 243, 258

Nakada Satoshi; Isoda Yutaka; Kusahara Kazuya
Response of the Coastal Branch Flow to Alongshore Variation in Shelf Topography off Toyama Bay.
Oceanography in Japan, 2002
11, 2, 243, 258