SHIGEMITSU MASAHITO
| Research Institute for Global Change Global Ocean Observation Research Center Physical and Chemical Oceanography Research Group | - |
| Advanced Institute for Marine Ecosystem Change Research Division Marine Biogeochemical Dynamics Research Unit | - |
| Institute for Marine-Earth Exploration and Engineering Project Office for Hadal-Deep Sea Exploration Support Vessel Research Planning Group | - |
Researcher Information
researchmap URL
Research History
- Apr. 2024 - Present
Marine Biogeochemical Dynamics Research Unit, WPI-AIMEC, researcher - Apr. 2020 - Present
Japan Agency For Marine-Earth Science and Technology, Physical and Chemical Oceanography Research Group, Researcher - Apr. 2015 - Mar. 2020
Japan Agency for Marine-Earth Science and Technology, 全球海洋化学・物理研究グループ, 技術研究員 - Apr. 2008 - Mar. 2015
北海道大学地球環境科学研究員, 地球圏科学部門気候力学分野, 博士研究員 - Mar. 2011 - Feb. 2012
スイス連邦工科大学, 環境物理学部, 客員研究員 - Apr. 2007 - Jul. 2007
Hokkaido Tokai University, 非常勤講師 - Apr. 2005 - Mar. 2007
北海道大学地球環境科学研究院, 21世紀COEプログラム リサーチアシスタント - Apr. 2002 - Mar. 2005
Nippon Koei
Education
Research activity information
Papers
- Masahide Wakita; Akira Nagano; Hiroshi Uchida; Yoshiyuki Nakano; Katsunori Kimoto; Masahito Shigemitsu; Kana Nagashima; Fumikazu Taketani; Tetsuichi Fujiki; Maki Noguchi-Aita; Kosei Sasaoka; Tsuneo Ono; Toshihiko Takemura
Ocean acidification and changes in biological production in the western subarctic region of the North Pacific over the quarter century, 1999–2023
Progress in Earth and Planetary Science, 14 Feb. 2026
13, 1
[Reviewed] - Ryan J. Woosley; Jessica A. Bruno; Daina Neithardt; Zhaohui Aleck Wang; Nagisa Fujiki; Masahito Shigemitsu; Akihiko Murata
Comparison of open cell and single‐step total alkalinity titration methods and implications for organic alkalinity
Limnology and Oceanography: Methods, Dec. 2025
[Reviewed] - Akira Nagano; Masahito Shigemitsu; Masahide Wakita
Dissolved inorganic carbon entrainment into the mixed layer of the western subarctic North Pacific: a key process of ocean acidification under historical carbon dioxide emissions
Progress in Earth and Planetary Science, 16 Jun. 2025
12, 1
[Reviewed] - Masahito Shigemitsu; Kosei Sasaoka; Masahide Wakita; Taichi Yokokawa; Taketo Hashioka; K. Arulananthan; Akihiko Murata
Controlling factors of latitudinal distribution of dissolved organic matter in the upper layers of the Indian Ocean
Progress in Earth and Planetary Science, 11 Apr. 2024
[Reviewed]
Lead, Corresponding - C. Yoshikawa; M. Shigemitsu; A. Yamamoto; A. Oka; N. Ohkouchi
A nitrogen isoscape of phytoplankton in the western North Pacific created with a marine nitrogen isotope model
Frontiers in Marine Science, Jan. 2024
11
[Reviewed] - Shigemitsu M; Duteil O; Ito T; Tjiputra J; Eddebbar Y
Editorial: Constraining uncertainties in hindcasts and future projections of marine deoxygenation
Frontiers in Marine Science, Dec. 2023
10:1355015
[Reviewed]
Lead, Corresponding - Masahito Shigemitsu; Taichi Yokokawa; Hiroshi Uchida; Shinsuke Kawagucci; Akihiko Murata
Sedimentary supply of humic-like fluorescent dissolved organic matter and its implication for chemoautotrophic microbial activity in the Izu-Ogasawara Trench
Scientific Reports, Sep. 2021
11, 19006
[Reviewed]
Lead, Corresponding - Shigemitsu, M; H. Uchida; T. Yokokawa; K. Arulananthan; A. Murata
Determining the distribution of fluorescent organic matter in the Indian Ocean using in situ fluorometry
Frontiers in Microbiology, Dec. 2020
11
[Reviewed]
Lead, Corresponding - Yokohata, T.; Tanaka, K.; Nishina, K.; Takahashi, K.; Emori, S.; Kiguchi, M.; Iseri, Y.; Honda, Y.; Okada, M.; Masaki, Y.; Yamamoto, A.; Shigemitsu, M.; Yoshimori, M.; Sueyoshi, T.; Iwase, K.; Hanasaki, N.; Ito, A.; Sakurai, G.; Iizumi, T.; Nishimori, M.; Lim, W. H.; Miyazaki, C.; Okamoto, A.; Kanae, S.; Oki, T.
Visualizing the Interconnections Among Climate Risks
Earth's Future, 2019
7, 85, 100
[Reviewed] - Hoshiba, Y; T. Hirata; M. Shigemitsu; H. Nakano; T. Hashioka; Y. Masuda; Y. Yamanaka
Biological data assimilation for parameter estimation of a phytoplankton functional type model for the western North Pacific
Ocean Sci., 2018
14, 3, 371, 386
[Reviewed] - 重光雅仁
Ocean Deoxygenation : Effect of Global Warming on the Loss of Dissolved Oxygen from the Ocean and Uncertainty of the Future Projection
季刊環境研究（日立財団発行）, 2017
182, 182, 123, 149
Lead - Shigemitsu, M.; Yamamoto, A.; Oka, A.; Yamanaka, Y.
One possible uncertainty in CMIP5 projections of low-oxygen water volume in the Eastern Tropical Pacific
Global Biogeochemical Cycles, 2017
31, 5
[Reviewed]
Lead, Corresponding - M. Shigemitsu; N. Gruber; A. Oka; Y. Yamanaka
Potential use of the N-2/Ar ratio as a constraint on the oceanic fixed nitrogen loss
GLOBAL BIOGEOCHEMICAL CYCLES, Apr. 2016
30, 4, 576, 594
[Reviewed]
Lead, Corresponding - 重光雅仁; 山中康裕
海洋生態系モデル（Marine Ecosystem Model:MEM）の概要
月刊海洋, 2016
548, 281, 290
Lead - Yamamoto Akitomo; Abe-Ouchi Ayako; Shigemitsu Masahito; Oka Akira; Takahashi Kunio; Ohgaito Rumi; Yamanaka Yasuhiro
Enhanced deep ocean ventilation and global deep ocean oxygenation with global warming
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2015
62, 91 - Yamamoto, A.; Abe-Ouchi, A.; Shigemitsu, M.; Oka, A.; Takahashi, K.; Ohgaito, R.; Yamanaka, Y.
Global deep ocean oxygenation by enhanced ventilation in the Southern Ocean under long-term global warming
Global Biogeochemical Cycles, 2015
29, 10, 1801, 1815
[Reviewed] - Masanori Ito; Yutaka W. Watanabe; Masahito Shigemitsu; Shinichi S. Tanaka; Jun Nishioka
Application of chemical tracers to an estimate of benthic denitrification in the Okhotsk Sea
JOURNAL OF OCEANOGRAPHY, Oct. 2014
70, 5, 415, 424
[Reviewed] - Yutaka W. Watanabe; Masahito Shigemitsu; Takashi Ujiie; Hideki Minami
Decadal shift of biogenic sinking particle flux in the western North Pacific subpolar region
GEOPHYSICAL RESEARCH LETTERS, Jan. 2014
41, 2, 513, 518
[Reviewed] - K. Suzuki; A. Hattori-Saito; Y. Sekiguchi; J. Nishioka; M. Shigemitsu; T. Isada; H. Liu; R. M. L. McKay
Spatial variability in iron nutritional status of large diatoms in the Sea of Okhotsk with special reference to the Amur River discharge
BIOGEOSCIENCES, 2014
11, 9, 2503, 2517
[Reviewed] - Watanabe, Y.W; M. Shigemitsu; T. Ujiie; H. Minami
Significant decadal shift of oceanic phytoplankton in the high-latitudinal North Pacific
Geophysical Research Letters, 2014
41, 513, 518
[Reviewed] - Masahito Shigemitsu; J. Nishioka; Y. W. Watanabe; Y. Yamanaka; T. Nakatsuka; Y. N. Volkov
Fe/Al ratios of suspended particulate matter from intermediate water in the Okhotsk Sea: Implications for long-distance lateral transport of particulate Fe
MARINE CHEMISTRY, Dec. 2013
157, 41, 48
[Reviewed]
Lead, Corresponding - Eric D. Galbraith; Markus Kienast; Ana Luiza Albuquerque; Mark A. Altabet; Fabian Batista; Daniele Bianchi; Stephen E. Calvert; Sergio Contreras; Xavier Crosta; Ricardo De Pol-Holz; Nathalie Dubois; Johan Etourneau; Roger Francois; Ting-Chang Hsu; Tara Ivanochko; Samuel L. Jaccard; Shuh-Ji Kao; Thorsten Kiefer; Stephanie Kienast; Moritz F. Lehmann; Philippe Martinez; Matthew McCarthy; Anna Nele Meckler; Alan Mix; Juergen Moebius; Tom F. Pedersen; Laetitia Pichevin; Tracy M. Quan; Rebecca S. Robinson; Evgeniya Ryabenko; Andreas Schmittner; Ralph Schneider; Aya Schneider-Mor; Masahito Shigemitsu; Dan Sinclair; Christopher Somes; Anja S. Studer; Jan-Erik Tesdal; Robert Thunell; Jin-Yu Terence Yang
The acceleration of oceanic denitrification during deglacial warming
NATURE GEOSCIENCE, Jul. 2013
6, 7, 579, 584
[Reviewed] - Takafumi Hirata; Stephane Saux-Picart; Taketo Hashioka; Maki Aita-Noguchi; Hiroshi Sumata; Masahito Shigemitsu; J. Icarus Allen; Yasuhiro Yamanaka
A comparison between phytoplankton community structures derived from a global 3D ecosystem model and satellite observation
Journal of Marine Systems, Jan. 2013
109-110, 129, 137
[Reviewed] - Rebecca S. Robinson; Markus Kienast; Ana Luiza Albuquerque; Mark Altabet; Sergio Contreras; Ricardo De Pol Holz; Nathalie Dubois; Roger Francois; Eric Galbraith; Ting-Chang Hsu; Tara Ivanochko; Samuel Jaccard; Shuh-Ji Kao; Thorsten Kiefer; Stephanie Kienast; Moritz F. Lehmann; Philippe Martinez; Matthew McCarthy; Juergen Moebius; Tom Pedersen; Tracy M. Quan; Evgeniya Ryabenko; Andreas Schmittner; Ralph Schneider; Aya Schneider-Mor; Masahito Shigemitsu; Dan Sinclair; Christopher Somes; Anja Studer; Robert Thunell; Jin-Yu Yang
A review of nitrogen isotopic alteration in marine sediments
PALEOCEANOGRAPHY, Oct. 2012
27
[Reviewed] - M. Shigemitsu; T. Okunishi; J. Nishioka; H. Sumata; T. Hashioka; M. N. Aita; S. L. Smith; N. Yoshie; N. Okada; Y. Yamanaka
Development of a one-dimensional ecosystem model including the iron cycle applied to the Oyashio region, western subarctic Pacific
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, Jun. 2012
117, 6
[Reviewed]
Lead, Corresponding - Shigemitsu Masahito; Gruber Nicolas; Yamanaka Yasuhiro
Seasonal evolution of the subsurface saturation anomaly of N2 and Ar in the northwestern subarctic Pacific
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2012
59, 7 - SHIGEMATSU Masahito; YAMANAKA Yasuhiro
Ocean biogeochemical research with an ecosystem model
Chikyukagaku, 2011
45, 1, 1, 28
[Reviewed]
Lead, Corresponding - Masahito Shigemitsu; Yutaka W. Watanabe; Yasuhiro Yamanaka; Hajime Kawakami; Makio C. Honda
Relationship between Sinking Organic Matter and Minerals in the Shallow Zone of the Western Subarctic Pacific
JOURNAL OF OCEANOGRAPHY, Oct. 2010
66, 5, 697, 708
[Reviewed]
Lead, Corresponding - Masahito Shigemitsu; Yasuhiro Yamanaka; Yutaka W. Watanabe; Nobuhiro Maeda; Shinichiro Noriki
Seasonal characteristics of the nitrogen isotope biogeochemistry of settling particles in the western subarctic Pacific: A model study
EARTH AND PLANETARY SCIENCE LETTERS, Apr. 2010
293, 1-2, 180, 190
[Reviewed]
Lead, Corresponding - Daisuke Nagaoka; Masahito Shigemitsu; Masao Minagawa; Shinichro Noriki
Anthropogenic Pb in Settling Particulate Matter in the Northwestern Pacific Examined Using Stable Isotopes of Pb
JOURNAL OF OCEANOGRAPHY, Feb. 2010
66, 1, 117, 132
[Reviewed] - Y. W. Watanabe; J. Nishioka; M. Shigemitsu; A. Mimura; T. Nakatsuka
Influence of riverine alkalinity on carbonate species in the Okhotsk Sea
GEOPHYSICAL RESEARCH LETTERS, Aug. 2009
36
[Reviewed] - Masahito Shigemitsu; Yutaka W. Watanabe; Hisashi Narita
Sedimentary Inorganic Nitrogen and Its Isotope Ratio in the Western Subarctic Pacific over the Last 145 kyr
JOURNAL OF OCEANOGRAPHY, Aug. 2009
65, 4, 541, 548
[Reviewed]
Lead, Corresponding - Shigemitsu Masahito; Yamanaka Yasuhiro; Watanabe W. Yutaka; Okada Naosuke; Nobuhiro Maeda; Noriki Sinichiro
Analysis of mechanisms controlling the seasonal variations in d13C of settling particles in the western subarctic Pacific
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2009
56, 337, 337 - Masahito Shigemitsu; Yutaka W. Watanabe; Hisashi Narita
Time variations of delta(15)N of organic nitrogen in deep western subarctic Pacific sediment over the last 145 ka
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, Oct. 2008
9
[Reviewed]
Lead, Corresponding - Shigemitsu Masahito; Yamanaka Yasuhiro; Watanabe Yutaka; Maeda Nobuhiro; Noriki Shinichiro
Analyses of the seasonal variations in d15N of settling particles in the western subarctic Pacific using an ecosystem model including nitrogen isotopes
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2008
55, 309, 309 - Yutaka W. Watanabe; Masahito Shigemitsu; Kazuaki Tadokoro
Evidence of a change in oceanic fixed nitrogen with decadal climate change in the North Pacific subpolar region
GEOPHYSICAL RESEARCH LETTERS, Jan. 2008
35, 1
[Reviewed] - Masahito Shigemitsu; Hisashi Narita; Yutaka W. Watanabe; Naomi Harada; Shizuo Tsunogai
Ba, Si, U, Al, Sc, La, Th, C and C-13/C-12 in a sediment core in the western subarctic Pacific as proxies of past biological production
MARINE CHEMISTRY, Aug. 2007
106, 3-4, 442, 455
[Reviewed]
Lead, Corresponding - Shigemitsu Masahito; Watanabe Yutaka; Yamanaka Yasuhiro; Honda Makio
Decomposition of sinking particulate nitrogen in the twilight zone in the western subarctic Pacific and its influence on the nitrogen isotopic ratio
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2007
54, 24, 24 - 堀川恵司; 重光雅仁; 南川雅男
窒素同位体比を用いた古海洋解析
海の研究, 2007
16, 375, 399
[Reviewed] - Hamahara Kazuhiro; Shigemitsu Masahito; Noriki Shinichiro; Fukuyama Ryuji; Aramaki Takafumi; Otosaka Shigeyoshi
Organic Material of High C/N Ratio and Heavy Metals Recorded in Ishikari Bay Sediment
Bulletin on coastal oceanography, 2003
41, 1, 53, 60
[Reviewed]
Misc.
- 脇田昌英; 永野憲; 内田裕; 中野善之; 木元克典; 重光雅仁; 長島佳菜; 竹谷文一; 藤木徹一; 野口真希; 笹岡晃征; 小埜恒夫
西部亜寒帯循環域K2測点における海洋酸性化と生物生産の変化
日本海洋学会大会講演要旨集(Web), 2024
2024 - 山中康裕; 熊けん睿; 増田良帆; 重光雅仁; 佐藤祐介; 干場康博; 柴野良太; 田中朱美; 宮崎千尋
気候変動に対応した循環型食料生産等の確立のためのプロジェクト-水産分野における温暖化緩和技術の開発-地球温暖化が水産分野に与える影響評価と適応技術の開発-第1編 水産分野における温暖化緩和技術の開発 第2章 日本周辺海域の高解像度炭素・窒素循環モデルの開発 1 日本周辺海域の高解像度炭素・窒素循環モデルの開発
農林水産省農林水産技術会議事務局研究成果, 2016
559 - HARADA N; T. KANAMATSU; K. KIMOTO; H. NARITA; T. SUGAWARA; H. MURAKI; A. KATO; K. MATSUO; Y. MATSUURA; S. KOYAMA; M. SHIGEMITSU
General features of sediment cores collected in the Okhotsk Sea and the adjacent area during the MR00-K03 cruise.
JAMSTEC REPORT, 2001
43, 45, 54
Books and Other Publications
Presentations
- Masahito Shigemitsu; Hiroshi Uchida
Determining the distribution of fluorescent organic matter in the Indian Ocean using in situ fluorometery
Japan Geoscience Union Meeting 2025, 28 May 2025 - Masahito Shigemitsu; Chisato Yoshikawa; Masahide Wakita; Akihiko Murata
Dissolved organic carbon (DOC) in the Indian Ocean
2019 Annual Meeting The Oceanographic Society of Japan SCOR-GEOTRACES Joint Session, 26 Sep. 2019 - Shigemitsu, M; M. Aoyama; T. Doi; T. Yokokawa; A. Murata
Revisiting the stoichiometry of marine organic matter decomposition
2018 Ocean Science Meeting, 2018 - Shigemitsu, M; A. Yamamoto; A. Oka; Y. Yamanaka
Possible uncertainty in CMIP5 projections of low-oxygen water volume in the Eastern Tropical Pacific
JpGU-AGU Joint Meeting 2017, 2017 - Shigemitsu, M; A. Yamamoto; A. Oka; Y. Yamanaka
Climate-driven variability and anthropogenic trend of oceanic suboxia
IMBER Open Science Conference, 2014 - Shigemitsu, M; A. Yamamoto; Y. Yamanaka
Oxygen trends in the Atlantic over the 20th and 21st centuries projected by a 3D ocean biogeochemical model
Instability in the Earth System, 2013 - higemitsu, M; J. Nishioka; Y. W. Watanabe; Y. Yamanaka; T. Nakatsuka
The role of suspended matters on Fe horizontal transport from continental shelf to the ocean interior
The 3rd Geotraces data/model synergy workshop, 2011 - Shigemitsu, M; T. Okunishi; J. Nishioka; H. Sumata; T. Hashioka; N. M. Aita; S. L. Smith; N. Yoshie; Y. Yamanaka
Development of a one-dimensional ecosystem model including iron cycle
The 43rd international Liege colloquium, 2011 - Shigemitsu, M; Y. Yamanaka; Y. W. Watanabe; N. Maeda; S. Noriki
Interpretation of seasonal variations of the δ15N of settling particulate nitrogen in the western subarctic Pacific
PAGES-IMAGES NICOPP workshop, 2010 - Shigemitsu, M; Y. Yamanaka; Y. W. Watanabe; N. Okada; I. Kriest; A. Oschlies; N. Maeda; S. Noriki
Seasonal characteristics of the carbon isotope biogeochemistry of settling particles in the western subarctic Pacific: a model study
2nd Geotraces data/model synergy workshop, 2009 - Shigemitsu, M; Y. Yamanaka; Y. W. Watanabe; N. Maeda; S. Noriki
Interpretation of the carbon isotopic signal variations of settling particles in the western subarctic Pacific using a one-dimensional ecosystem model including carbon isotopes
ASLO Aquatic Science Meeting, 2008 - Shigemitsu, M; Y. W. Watanabe; N. Maeda; S. Noriki
Response of δ15N of settling particles to ocean stratification in the western subarctic North Pacific
9th Hokkaido University – Seoul National University Joint Symposium, 2007
