研究の展開を示す代表的な成果を紹介します。完全な論文リストは下に掲載しています。
Selected papers illustrating the development and breadth of my research are highlighted below. The complete publication list follows.
2026 ・ Biogeosciences Discussions
将来の海洋生物地球化学
Future Ocean Biogeochemistry
Multi-centennial ocean biogeochemical responses to extended Shared Socioeconomic Pathways
Future Climate
Ocean Biogeochemistry
Earth System Modeling
原著論文 (英文, 査読あり) / Original Articles (English, Peer-Reviewed)
Kobayashi, H.
, T. Yokohata, A. Yamamoto, T. Hajima, H. Tatebe, A. Oka, and K. B. Rodgers (2026, Under Review):
Multi-centennial ocean biogeochemical responses to extended Shared Socioeconomic Pathways
Biogeosciences Discuss
.
https://doi.org/10.5194/egusphere-2026-120
要点 / Key point:
社会経済シナリオを長期間延長した場合に、海洋の生物地球化学的応答が数百年規模でどのように進むかを調べた研究です。
This study examined multi-centennial changes in ocean biogeochemistry under extended Shared Socioeconomic Pathway scenarios.
Kobayashi, H.
, A. Oka, T. Obase, and A. Abe-Ouchi (2024):
Assessing transient changes in the ocean carbon cycle during the last deglaciation through carbon isotope modeling,
Climate of the Past
,
20
, 769--787.
https://doi.org/10.5194/cp-20-769-2024
要点 / Key point:
炭素同位体モデリングを用いて、最終退氷期における海洋炭素循環の過渡的変化を評価した研究です。
Carbon-isotope modeling is used to assess transient changes in the ocean carbon cycle during the last deglaciation.
Sasaki, Y.,
H. Kobayashi
, and A. Oka (2022):
Global simulation of dissolved 231Pa and 230Th in the ocean and the sedimentary 231Pa/230Th ratios with the ocean general circulation model COCO ver4.0,
Geoscientific Model Development
,
15
, 2013--2033.
https://doi.org/10.5194/gmd-15-2013-2022
要点 / Key point:
海洋大循環モデル COCO を用いて、溶存
231
Pa・
230
Th と堆積物中の比を全球規模で再現した研究です。
A global simulation of dissolved
231
Pa and
230
Th and sedimentary
231
Pa/
230
Th ratios using COCO.
Lhardy, F., N. Bouttes, D. M. Roche, A. Abe-Ouchi, Z. Chase, K. A. Crichton, T. Ilyina, R. Ivanovic, M. Jochum, M. Kageyama,
H. Kobayashi
, B. Liu, L. Menviel, J. Muglia, R. Nuterman, A. Oka, G. Vettoretti, and A. Yamamoto (2021):
A first intercomparison of the simulated LGM carbon results within PMIP-carbon: role of the ocean boundary conditions,
Paleoceanography and Paleoclimatology
,
36
(10), e2021PA004302.
https://doi.org/10.1029/2021PA004302
要点 / Key point:
PMIP-carbon の複数モデルを比較し、最終氷期最盛期の炭素循環再現に海洋境界条件が果たす役割を検討した研究です。
This intercomparison evaluates how ocean boundary conditions influence simulated Last Glacial Maximum carbon-cycle states.
Kobayashi, H.
, A. Oka, A. Yamamoto, and A. Abe-Ouchi (2021):
Glacial carbon cycle changes by Southern Ocean processes with sedimentary amplification,
Science Advances
,
7
(35), eabg7723.
https://doi.org/10.1126/sciadv.abg7723
要点 / Key point:
南大洋の物理・生物地球化学過程による氷期炭素循環の変化が、海底堆積物過程によって増幅される可能性を示した研究です。
The study investigates how Southern Ocean processes alter the glacial carbon cycle and how sedimentary processes may amplify those changes.
Kobayashi, H.
, and A. Oka (2018):
Response of atmospheric pCO2 to glacial changes in the Southern Ocean amplified by carbonate compensation,
Paleoceanography and Paleoclimatology
,
33
(11), 1206--1229.
https://doi.org/10.1029/2018PA003360
要点 / Key point:
南大洋の氷期的変化に対する大気中 pCO
2
の応答が、炭酸塩補償によって増幅される仕組みを調べた研究です。
This study examines how carbonate compensation amplifies the atmospheric pCO
2
response to glacial Southern Ocean changes.
Kobayashi, H.
, A. Abe-Ouchi, and A. Oka (2015):
Role of Southern Ocean stratification in glacial atmospheric CO2 reduction evaluated by a three-dimensional ocean general circulation model,
Paleoceanography
,
30
(9), 1202--1216.
https://doi.org/10.1002/2015PA002786
要点 / Key point:
三次元海洋大循環モデルを用いて、南大洋の成層化が氷期の大気中 CO
2
低下に果たす役割を評価した研究です。
A three-dimensional ocean general circulation model is used to evaluate the role of Southern Ocean stratification in glacial atmospheric CO
2
reduction.
要点 / Key point:
氷期の海洋炭素循環を対象とした数値シミュレーション研究の考え方と主要な知見を整理した日本語総説です。
A Japanese review summarizing modeling approaches and major findings on the glacial ocean carbon cycle.
その他の論文 (和文, 査読なし) / Other Publications (Japanese, Non-Peer-Reviewed)
2025/10/01, 東京, 水塊物質循環ワークショップ
Multi-Centennial ocean biogeochemical and water mass responses to extended Shared Socioeconomic Pathways simulated by the MIROC-ES2L
著者:小林 英貴, 横畠 徳太, Keith Rodgers
2024/05/28, 幕張, 日本地球惑星科学連合 2024 年大会
題目:Mechanisms behind the transient changes in the ocean carbon cycle during the last deglaciation: insights from MIROC4m climate model simulations and proxy comparisons
著者:小林 英貴, 岡 顕, 小長谷 貴志, 阿部 彩子
(招待講演)
2024/03/07, 東京, 古気候モデリング研究集会 2024
Modeling the Paleo-Oceanic Biogeochemical Cycle: Past Contributions and Future Perspectives
著者:小林 英貴
Sept 26, 2025, PMIP WINGS
Title: Modeling the ocean carbon cycle across the Last Glacial Maximum and deglaciation: the role of Southern Ocean stratification and carbonate sedimentation
Author: Kobayashi, H.
Jul 24, 2025, Busan, Busan IAMAS-IACS-IAPSO Joint Assembly
Title: Marine carbon cycle responses across interglacial periods: Insights from past warm climates
Author: Kobayashi, H., A. Oka, T. Obase, and A. Abe-Ouchi
Aug 27, 2024, Ginowan, EPPC Workshop 2024 ~Insight from Snowball into paleo and modern~
Title: Challenging the marine-centric view of the Late Pleistocene carbon cycle
Author: Kobayashi, H.
Aug 23, 2024, Chicago, 2024 Goldschmidt Conference
Title: Carbon isotope modeling implications for changes in the Southern Ocean carbon cycle during the last deglaciation
Author: Kobayashi, H., A. Oka, T. Obase, and A. Abe-Ouchi
Apr 19, 2024, Vienna, EGU General Assembly
Title: Assessing transient changes in the ocean carbon cycle during the last deglaciation through carbon isotope modeling
Author: Kobayashi, H., A. Oka, T. Obase, and A. Abe-Ouchi
Jul 12, 2023, Berlin, 28th General Assembly of the IUGG
Title: Glacial carbon cycle changes by Southern Ocean processes with sedimentary amplification
Author: Kobayashi, H., A. Oka, A. Yamamoto, and A. Abe-Ouchi
Feb 20, 2020, San Diego, Ocean Sciences Meeting 2020
Title: Response of atmospheric pCO2 to glacial changes in the Southern Ocean amplified by carbonate compensation
Author: Kobayashi, H., and A. Oka
Dec 3, 2018, Tachikawa, 1st GRAntarctic International Symposium
Title: Simulations of glacial ocean carbon cycle with a parameterization of brine rejection
Author: Kobayashi, H., and A. Oka
Jun 27, 2016, Yokohama, Goldschmidt 2016
Title: Role of Southern Ocean in glacial atmospheric CO2 reduction
Author: Kobayashi, H., A. Abe-Ouchi, and A. Oka
Jun 28, 2015, Prague, 26th General Assembly of the IUGG
Title: Role of Southern Ocean stratification in glacial atmospheric CO2 reduction
Author: Kobayashi, H., and A. Oka
国際学会 / International, Poster
May 27, 2026, Makuhari, JpGU-AGU Joint Meeting 2026
Title: Role of riverine carbon in the ocean carbon cycle evaluated by an ocean general circulation model with a sedimentary module
Author: Kobayashi, H.
May 26, 2026, Makuhari, JpGU-AGU Joint Meeting 2026
Title: Atmospheric Δ14C and pCO2 controls on ocean radiocarbon distributions during the Last Glacial Maximum and the last deglaciation
Author: Kobayashi, H.
May 19, 2026, Bremen, PalMod IOSC 2026
Title: Contrasting changes in atmospheric pCO2 trajectories due to different temporal variations in the Atlantic meridional overturning circulation during the past two deglaciations
Author: Kobayashi, H., T. Obase, A. Oka, and A. Abe-Ouchi
May 11, 2026, Bern, PAGES IMPACT workshop 2026
Title: Background-state dependence of Atlantic Meridional Overturning Circulation, carbon isotopes, and 231Pa/230Th under North Atlantic freshwater forcing
Author: Kobayashi, H., S. Sherriff-Tadano, T. Obase, A. Oka, A. Abe-Ouchi, P. Testorf, and F. P$00F6ppelmeier
May 7, 2026, Vienna, EGU General Assembly 2026
Title: Diagnosing deglacial ocean carbon cycle change through radiocarbon and stable carbon isotopes
Author: Kobayashi, H., A. Oka, T. Obase, M. Nishida, and A. Abe-Ouchi
Mar 11, 2026, hybrid (Kyoto), CMIP Community Workshop 2026
Title: Contrasting AMOC--carbon cycle linkages across the last two deglaciations
Author: Kobayashi, H., T. Obase, A. Oka, and A. Abe-Ouchi
Mar 5, 2026, Tokyo, TIPMIP General Assembly 2026
Title: Multi-centennial evolution of ocean biogeochemistry under extended SSP simulations
Author: Kobayashi, H., T. Yokohata, A. Yamamoto, T. Hajima, H. Tatebe. A. Oka, and K. Rodgers
Feb 26, 2026, Glasgow, Ocean Sciences Meeting 2026
Title: Multi-Centennial Ocean Biogeochemical Responses to Extended Shared Socioeconomic Pathways
Author: Kobayashi, H., T. Yokohata, A. Yamamoto, T. Hajima, H. Tatebe. A. Oka, and K. Rodgers
Sept 1, 2025, Bengaluru, 15th International Conference on Paleoceanography (ICP15)
Title: Different responses of the ocean carbon cycle during two past interglacials and glacial terminations
Author: Kobayashi, H., A. Oka, T. Obase, and A. Abe-Ouchi
Dec 13, 2024, Washington, D.C., AGU24 Annual Meeting
Title: Ocean carbon cycle dynamics during the last glacial period: comparative analysis of the MIROC4m model and proxies
Author: Kobayashi, H., A. Oka, T. Obase, and A. Abe-Ouchi
Jul 15, 2023, Rome, XXI INQUA Congress
Title: Transient response of the ocean carbon cycle during the last deglaciation ~ Investigating the impact of climate and AMOC on carbon isotope signatures ~
Author: Kobayashi, H., A. Oka, T. Obase, and A. Abe-Ouchi
Aug 30, 2022, hybrid (Bergen), 14th International Conference on Paleoceanography (ICP14)
Title: Glacial carbon cycle changes by Southern Ocean processes with sedimentary amplification
Author: Kobayashi, H., A. Oka, A. Yamamoto, and A. Abe-Ouchi
Mar 4, 2022, virtual, Ocean Sciences Meeting 2022
Title: Impacts of enhanced salinity stratification and iron fertilization in the Southern Ocean on the distribution of ocean biochemical tracers during the Last Glacial Maximum
Author: Kobayashi, H., A. Oka, A. Yamamoto, and A. Abe-Ouchi
Oct 26, 2020, virtual, PMIP 2020
Title: Glacial ocean carbon cycle changes caused by Southern Ocean processes with sedimentary amplification
Author: Kobayashi, H., A. Oka, A. Yamamoto, and A. Abe-Ouchi
Jul 12, 2020, virtual, JpGU-AGU Joint Meeting 2020
Title: A modeling study of early diagenesis using an ocean sediment model
Author: Kobayashi, H., and A. Oka
Jul 12, 2020, virtual, JpGU-AGU Joint Meeting 2020
Title: Glacial ocean carbon cycle changes caused by enhanced stratification in the Southern Ocean and iron fertilization from glaciogenic dust
Author: Kobayashi, H., A. Oka, A. Yamamoto, and A. Abe-Ouchi
Sept 2, 2019, Sydney, 13th International Conference on Paleoceanography (ICP13)
Title: Response of atmospheric pCO2 to glacial changes in the Southern Ocean amplified by carbonate compensation
Author: Kobayashi, H., and A. Oka
Apr 8, 2019, Vienna, EGU General Assembly
Title: Response of atmospheric pCO2 to glacial changes in the Southern Ocean amplified by carbonate compensation
Author: Kobayashi, H., and A. Oka
Sept 6, 2018, Cambridge, Ocean circulation and carbon cycling (OC3) workshop
Title: Role of carbon cycle in glacial reduction of atmospheric carbon dioxide concentration
Author: H. Kobayashi
Aug 30, 2016, Utrecht, 12th International Conference on Paleoceanography (ICP12)
Title: Modeling of glacial ocean carbon cycle by focusing on the role of the Southern Ocean and carbonate compensation process
Author: Kobayashi, H., and A. Oka
Dec 16, 2014, San Francisco, 2014 AGU Fall Meeting
Title: Role of Southern Ocean stratification in glacial atmospheric CO2 reduction
Author: Kobayashi, H., and A. Oka