Tomohiro Hajima

6.3k total citations · 4 hit papers
47 papers, 3.2k citations indexed

About

Tomohiro Hajima is a scholar working on Global and Planetary Change, Atmospheric Science and Oceanography. According to data from OpenAlex, Tomohiro Hajima has authored 47 papers receiving a total of 3.2k indexed citations (citations by other indexed papers that have themselves been cited), including 42 papers in Global and Planetary Change, 21 papers in Atmospheric Science and 7 papers in Oceanography. Recurrent topics in Tomohiro Hajima's work include Atmospheric and Environmental Gas Dynamics (33 papers), Climate variability and models (28 papers) and Atmospheric chemistry and aerosols (10 papers). Tomohiro Hajima is often cited by papers focused on Atmospheric and Environmental Gas Dynamics (33 papers), Climate variability and models (28 papers) and Atmospheric chemistry and aerosols (10 papers). Tomohiro Hajima collaborates with scholars based in Japan, United Kingdom and France. Tomohiro Hajima's co-authors include Michio Kawamiya, Shingo Watanabe, Manabu Abe, Hideki Okajima, Kumiko Takata, Etsushi Kato, Tokuta Yokohata, Toshihiko Takemura, Takeshi Ise and Akihiko Ito and has published in prestigious journals such as Nature Communications, PLoS ONE and The Science of The Total Environment.

In The Last Decade

Tomohiro Hajima

45 papers receiving 3.1k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

MIROC-ESM 2010: model description and basic results of CMIP5-20c3m experiments

2011 1.1k citations Shingo Watanabe, Tomohiro Hajima et al. Geoscientific model development profile →
Carbon–Concentration and Carbon–Climate Feedbacks in CMIP5 Earth System Models

2013 512 citations Vivek K. Arora, Chris Jones et al. profile →
Development of the MIROC-ES2L Earth system model and the evaluation of biogeochemical processes and feedbacks

2020 337 citations Tomohiro Hajima, Michio Watanabe et al. Geoscientific model development profile →
Atmospheric dryness reduces photosynthesis along a large range of soil water deficits

2022 260 citations Philippe Ciais, Tomohiro Hajima et al. profile →

Peers

Countries citing papers authored by Tomohiro Hajima

Since Specialization

Citations

This map shows the geographic impact of Tomohiro Hajima's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Tomohiro Hajima with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Tomohiro Hajima more than expected).

Fields of papers citing papers by Tomohiro Hajima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Tomohiro Hajima. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Tomohiro Hajima. The network helps show where Tomohiro Hajima may publish in the future.

Co-authorship network of co-authors of Tomohiro Hajima

This figure shows the co-authorship network connecting the top 25 collaborators of Tomohiro Hajima. A scholar is included among the top collaborators of Tomohiro Hajima based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Tomohiro Hajima. Tomohiro Hajima is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Amazon dieback beyond the 21st century under high-emission scenarios by Earth System models 2025 ·Communications Earth & Environment ·Irina Melnikova, Tomohiro Hajima, Hideo Shiogama, Michiya Hayashi, Akihiko Ito, Kazuya Nishina, Kaoru Tachiiri, Tokuta Yokohata	0
2	Rising nitrogen deposition leads to only a minor increase in CO2 uptake in Earth system models 2025 ·Communications Earth & Environment ·Sian Kou‐Giesbrecht, Vivek Arora, Chris Jones, Victor Brovkin, Tomohiro Hajima, Michio Kawamiya, Spencer Liddicoat, Alexander J. Winkler, Sönke Zaehle	2
3	Reductions in atmospheric levels of non-CO2 greenhouse gases explain about a quarter of the 1998-2012 warming slowdown 2024 ·Communications Earth & Environment ·Xuanming Su, Hideo Shiogama, Katsumasa Tanaka, Kaoru Tachiiri, Tomohiro Hajima, Michio Watanabe, Michio Kawamiya, Kiyoshi Takahashi, Tokuta Yokohata	2
4	Carbon cycle feedbacks in an idealized simulation and a scenario simulation of negative emissions in CMIP6 Earth system models 2024 ·Biogeosciences ·(unknown), Jörg Schwinger, Hanna Lee, Jerry Tjiputra, Vivek Arora, Roland Séférian, Spencer Liddicoat, Tomohiro Hajima, Yeray Santana‐Falcón, Chris Jones	10
5	Impact of bioenergy crop expansion on climate–carbon cycle feedbacks in overshoot scenarios 2022 ·Earth System Dynamics ·Irina Melnikova, Oliviér Boucher, Patricia Cadule, Katsumasa Tanaka, Thomas Gasser, Tomohiro Hajima, Yann Quilcaille, Hideo Shiogama, Roland Séférian, Kaoru Tachiiri, Nicolas Vuichard, Tokuta Yokohata, Philippe Ciais	17
6	Impact of bioenergy crops expansion on climate-carbon cycle feedbacks in overshoot scenarios 2021 ·Irina Melnikova, Oliviér Boucher, Patricia Cadule, Katsumasa Tanaka, Thomas Gasser, Tomohiro Hajima, Yann Quilcaille, Hideo Shiogama, Roland Séférian, Kaoru Tachiiri, Nicolas Vuichard, Tokuta Yokohata, Philippe Ciais	2
7	Evaluation of earth system model and atmospheric inversion using total column CO2 observations from GOSAT and OCO-2 2021 ·Progress in Earth and Planetary Science ·Prabir K. Patra, Tomohiro Hajima, (unknown), Naveen Chandra, Yukio Yoshida, Kazuhito Ichii, Michio Kawamiya, Masayuki Kondo, Akihiko Ito, David Crisp	11
8	PMIP4 experiments using MIROC-ES2L Earth system model 2021 ·Geoscientific model development ·Rumi Ohgaito, A. Yamamoto, Tomohiro Hajima, Ryouta O’ishi, Manabu Abe, Hiroaki Tatebe, Ayako Abe‐Ouchi, Michio Kawamiya	30
9	Global climate response to idealized deforestation in CMIP6 models 2020 ·Biogeosciences ·Lena Boysen, Victor Brovkin, Julia Pongratz, David M. Lawrence, Peter Lawrence, Nicolas Vuichard, Philippe Peylin, Spencer Liddicoat, Tomohiro Hajima, Yanwu Zhang, Matthias Rocher, Christine Delire, Roland Séférian, Vivek K. Arora, Lars Nieradzik, Peter Anthoni, Wim Thiery, Marysa M. Laguë, Deborah Lawrence, Min‐Hui Lo	95
10	Development of the MIROC-ES2L Earth system model and the evaluation of biogeochemical processes and feedbacks breakdown → 2020 ·Geoscientific model development ·Tomohiro Hajima, Michio Watanabe, A. Yamamoto, Hiroaki Tatebe, Maki A. Noguchi, Manabu Abe, Rumi Ohgaito, Akinori Ito, Dai Yamazaki, Hideki Okajima, Akihiko Ito, Kumiko Takata, Koji Ogochi, Shingo Watanabe, Michio Kawamiya	337
11	Importance of El Niño reproducibility for reconstructing historical CO ₂ flux variations in the equatorial Pacific 2020 ·Ocean science ·Michio Watanabe, Hiroaki Tatebe, Hiroshi Koyama, Tomohiro Hajima, Masahiro Watanabe, Michio Kawamiya	2
12	Methane budget of East Asia, 1990–2015: A bottom-up evaluation 2019 ·The Science of The Total Environment ·Akihiko Ito, Yasunori Tohjima, Takuya Saito, Taku Umezawa, Tomohiro Hajima, Ryuichi Hirata, Makoto Saito, Yukio Terao	34
13	Fraction of nitrous oxide production in nitrification and its effect on total soil emission: A meta-analysis and global-scale sensitivity analysis using a process-based model 2019 ·PLoS ONE ·Motoko Inatomi, Tomohiro Hajima, Akihiko Ito	42
14	Effect of high dust amount on surface temperature during the Last Glacial Maximum: a modelling study using MIROC-ESM 2018 ·Climate of the past ·Rumi Ohgaito, Ayako Abe‐Ouchi, Ryouta O’ishi, Toshihiko Takemura, Akinori Ito, Tomohiro Hajima, Shingo Watanabe, Michio Kawamiya	18
15	Set-up of the PMIP3 paleoclimate experiments conducted using an Earth system model, MIROC-ESM 2013 ·Geoscientific model development ·Tetsuo Sueyoshi, Rumi Ohgaito, A. Yamamoto, M. O. Chikamoto, Tomohiro Hajima, Hideki Okajima, Masakazu Yoshimori, Manabu Abe, Ryouta O’ishi, Fuyuki Saito, Shingo Watanabe, Michio Kawamiya, Ayako Abe‐Ouchi	79
16	Climate Change, Allowable Emission, and Earth System Response to Representative Concentration Pathway Scenarios 2012 ·Journal of the Meteorological Society of Japan Ser II ·Tomohiro Hajima, Takeshi Ise, Kaoru Tachiiri, Etsushi Kato, Shingo Watanabe, Michio Kawamiya	12
17	Nonlinearity of Land Carbon Sensitivities in Climate Change Simulations 2012 ·Journal of the Meteorological Society of Japan Ser II ·Kaoru Tachiiri, Akihiko Ito, Tomohiro Hajima, J. C. Hargreaves, J. D. Annan, Michio Kawamiya	5
18	Multi-model analysis of terrestrial carbon cycles in Japan: limitations and implications of model calibration using eddy flux observations 2010 ·Biogeosciences ·Kazuhito Ichii, Takashi Suzuki, Tomomichi Kato, Akihiko Ito, Tomohiro Hajima, Masahito Ueyama, T. Sasai, (unknown), Nobuko Saigusa, Yoshikazu Ohtani, Kentaro Takagi	31
19	Multi-model analysis of terrestrial carbon cycles in Japan: reducing uncertainties in model outputs among different terrestrial biosphere models using flux observations 2009 ·Kazuhito Ichii, Takashi Suzuki, Tomomichi Kato, Akihiko Ito, Tomohiro Hajima, Masahito Ueyama, T. Sasai, (unknown), Nobuko Saigusa, Yoshikazu Ohtani, Kentaro Takagi	9
20	Effect of growing season on ozone stomatal flux for deciduous forests in East Asia 2008 ·Journal of Agricultural Meteorology ·Yasutomo Hoshika, Tomohiro Hajima, Y. Shimizu, Masayuki Takigawa, Kenji Omasa	2

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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