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Tomo'omi Kumagai

Tomo'omi Kumagai

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 40 8117 7801 162 159 139 5746

Tomo'omi Kumagai publications per year

The chart shows the history of publications by Tomo'omi Kumagai between 1996 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Tomo'omi Kumagai published across 30 years, from 1996 to 2025, averaging 5.1 papers a year. Output peaked at 14 publications in 2014. 10 of the 152 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1996 to 2025. Vertical axis: number of publications, 0 to 14. Peak 14 publications in 2014. 1996: 1 publication 1997: 1 publication 1998: 1 publication 1999: 1 publication 2000: 0 publications 2001: 2 publications 2002: 1 publication 2003: 0 publications 2004: 5 publications 2005: 6 publications 2006: 4 publications 2007: 3 publications 2008: 7 publications 2009: 8 publications 2010: 9 publications 2011: 7 publications 2012: 4 publications 2013: 7 publications 2014: 14 publications 2015: 10 publications 2016: 7 publications 2017: 5 publications 2018: 6 publications 2019: 11 publications 2020: 11 publications 2021: 5 publications 2022: 1 publication 2023: 5 publications 2024: 3 publications 2025: 7 publications
1996 2025

152 publications in total across all disciplines

View publications per year as a table
Tomo'omi Kumagai: publications per year, 1996 to 2025
Year Publications
1996 1
1997 1
1998 1
1999 1
2000 0
2001 2
2002 1
2003 0
2004 5
2005 6
2006 4
2007 3
2008 7
2009 8
2010 9
2011 7
2012 4
2013 7
2014 14
2015 10
2016 7
2017 5
2018 6
2019 11
2020 11
2021 5
2022 1
2023 5
2024 3
2025 7
Total 152
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Tomo'omi Kumagai publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Tomo'omi Kumagai sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 66 bars. Horizontal axis: publications, 41–50 to 690+. Vertical axis: number of scientists, 0 to 617. Most scientists, 617, have 121–130 publications. The last bar groups every scientist with 690 publications or more. The highlighted bar, 131–140 publications, is where this scientist sits. 41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 282 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 26 scientists 501–510 publications: 17 scientists 511–520 publications: 19 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–689 publications: 4 scientists 690+ publications: 100 scientists
41–50 publications 690+

This scientist: 139 publications — 35th percentile

35% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 690 publications or more.

View publications distribution as a table
Number of Environmental Sciences scientists by publication count, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
Publications Scientists This scientist
41–50 21
51–60 62
61–70 133
71–80 257
81–90 361
91–100 440
101–110 492
111–120 541
121–130 617
131–140 544 139
141–150 541
151–160 539
161–170 444
171–180 444
181–190 400
191–200 377
201–210 318
211–220 282
221–230 263
231–240 220
241–250 217
251–260 180
261–270 181
271–280 155
281–290 130
291–300 127
301–310 130
311–320 85
321–330 106
331–340 80
341–350 83
351–360 75
361–370 69
371–380 52
381–390 54
391–400 56
401–410 44
411–420 40
421–430 36
431–440 25
441–450 25
451–460 32
461–470 29
471–480 21
481–490 26
491–500 26
501–510 17
511–520 19
521–530 15
531–540 22
541–550 12
551–560 15
561–570 11
571–580 19
581–590 9
591–600 9
601–610 7
611–620 11
621–630 5
631–640 5
641–650 6
651–660 3
661–670 3
671–680 4
681–689 4
690+ 100
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Tomo'omi Kumagai D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Tomo'omi Kumagai sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 97 bars. Horizontal axis: D-Index, 30 to 126+. Vertical axis: number of scientists, 0 to 348. Most scientists, 348, have 45 D-Index. The last bar groups every scientist with 126 D-Index or more. The highlighted bar, 40 D-Index, is where this scientist sits. 30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 198 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 20 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125 D-Index: 9 scientists 126+ D-Index: 92 scientists
30 D-Index 126+

This scientist: 40 D-Index — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 126 D-Index or more.

View D-Index distribution as a table
Number of Environmental Sciences scientists by D-index, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
D-Index Scientists This scientist
30 12
31 26
32 51
33 88
34 123
35 163
36 206
37 267
38 265
39 275
40 321 40
41 343
42 305
43 336
44 330
45 348
46 291
47 275
48 272
49 273
50 263
51 232
52 266
53 217
54 198
55 177
56 202
57 204
58 166
59 177
60 166
61 152
62 143
63 150
64 124
65 119
66 120
67 118
68 82
69 98
70 94
71 105
72 74
73 84
74 70
75 67
76 78
77 60
78 59
79 52
80 47
81 38
82 48
83 42
84 42
85 43
86 29
87 37
88 29
89 30
90 34
91 20
92 22
93 17
94 19
95 24
96 21
97 20
98 24
99 17
100 17
101 21
102 25
103 18
104 26
105 20
106 15
107 10
108 13
109 15
110 12
111 8
112 7
113 9
114 6
115 12
116 7
117 8
118 3
119 5
120 7
121 2
122 4
123 8
124 7
125 9
126+ 92
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Overview

Tomo'omi Kumagai is affiliated with the University of Tokyo in Japan and specializes in environmental science with a focus on several interconnected subfields and topics. The scientist's research addresses complex aspects of global and planetary change, water science and technology, environmental engineering, nature and landscape conservation, and ecology. Their work encompasses a range of subjects including plant water relations and carbon dynamics, hydrology and watershed management studies, forest ecology and management, atmospheric and environmental gas dynamics, climate variability and models, flood risk assessment and management, and remote sensing in agriculture.

Their recent publications demonstrate engagement with diverse topics within environmental and hydrological sciences. Selected papers include: "Homogenization of the terrestrial water cycle" (2020), Nature Geoscience; "Inferring CO2 fertilization effect based on global monitoring land-atmosphere exchange with a theoretical model" (2020), Environmental Research Letters; "Advancing ecohydrology in the 21st century: A convergence of opportunities" (2020), Ecohydrology; "Carbon stock in Japanese forests has been greatly underestimated" (2020), Scientific Reports; and "Forest canopy interception can reduce flood discharge: Inferences from model assumption analysis" (2023), Journal of Hydrology.

The scientist frequently publishes in several notable journals including Environmental Research Letters, Journal of Hydrology, Proceedings of the National Academy of Sciences, Hydrological Processes, and SSRN Electronic Journal.

Collaboration is also a significant feature of Kumagai's research. Frequent coauthors include Tomohiro Egusa, Takanori Shimizu, Hiroki Momiyama, S. Iida, and Kazuhito Ichii.

  • Environmental Science
  • Global and Planetary Change
  • Water Science and Technology
  • Environmental Engineering
  • Nature and Landscape Conservation
  • Ecology

  • Plant Water Relations and Carbon Dynamics
  • Hydrology and Watershed Management Studies
  • Forest ecology and management
  • Atmospheric and Environmental Gas Dynamics
  • Climate variability and models
  • Flood Risk Assessment and Management
  • Remote Sensing in Agriculture

  • Homogenization of the terrestrial water cycle, 2020, Nature Geoscience
  • Inferring CO2 fertilization effect based on global monitoring land-atmosphere exchange with a theoretical model, 2020, Environmental Research Letters
  • Advancing ecohydrology in the 21st century: A convergence of opportunities, 2020, Ecohydrology
  • Carbon stock in Japanese forests has been greatly underestimated, 2020, Scientific Reports
  • Forest canopy interception can reduce flood discharge: Inferences from model assumption analysis, 2023, Journal of Hydrology

  • Tomohiro Egusa
  • Takanori Shimizu
  • Hiroki Momiyama
  • S. Iida
  • Kazuhito Ichii

  • Environmental Research Letters
  • Journal of Hydrology
  • Proceedings of the National Academy of Sciences
  • Hydrological Processes
  • SSRN Electronic Journal

Best Publications

  • Drivers and Mechanisms of Tree Mortality in Moist Tropical Forests

    Nate G. McDowell;Craig D. Allen;Kristina Anderson‐Teixeira;Kristina Anderson‐Teixeira;Paulo M. Brando

  • Homogenization of the terrestrial water cycle

    Delphis F. Levia;Irena F. Creed;David M. Hannah;Kazuki Nanko

  • The land-atmosphere water flux in the tropics

    Joshua B. Fisher;Yadvinder Malhi;Damien Bonal;Humberto R. Da Rocha

  • Experimental analysis of moisture dynamics of litter layers: the effects of rainfall conditions and leaf shapes

    Yoshinobu Sato;Tomo'omi Kumagai;Atsushi Kume;Kyoichi Otsuki

  • Annual water balance and seasonality of evapotranspiration in a Bornean tropical rainforest

    Tomo’omi Kumagai;Taku M. Saitoh;Yoshinobu Sato;Hiroshi Takahashi

  • Transpiration, canopy conductance and the decoupling coefficient of a lowland mixed dipterocarp forest in Sarawak, Borneo: dry spell effects

    Tomo’omi Kumagai;Tomo’omi Kumagai;Taku M Saitoh;Yoshinobu Sato;Toshiyuki Morooka

  • Transpiration and canopy conductance at two slope positions in a Japanese cedar forest watershed

    Tomo ' omi Kumagai;Makiko Tateishi;Takanori Shimizu;Kyoichi Otsuki

  • Sap flow estimates of stand transpiration at two slope positions in a Japanese cedar forest watershed

    Tomo'omi Kumagai;Sayaka Aoki;Takanori Shimizu;Kyoichi Otsuki

  • Ten-year evapotranspiration estimates in a Bornean tropical rainforest

    Tomonori Kume;Nobuaki Tanaka;Koichiro Kuraji;Hikaru Komatsu

  • Effects of tree-to-tree and radial variations on sap flow estimates of transpiration in Japanese cedar

    Tomo ' omi Kumagai;Sayaka Aoki;Hisami Nagasawa;Tetsuya Mabuchi

  • Effect of forest structure on the spatial variation in soil respiration in a Bornean tropical rainforest

    Ayumi Katayama;Tomonori Kume;Hikaru Komatsu;Mizue Ohashi

  • Transport and retention of coarse woody debris in mountain streams: An in situ field experiment of log transport and a field survey of coarse woody debris distribution

    Hirokazu Haga;Tomo'omi Kumagai;Kyoichi Otsuki;Shigeru Ogawa

  • Persistence and memory timescales in root-zone soil moisture dynamics

    Khaled Ghannam;Taro Nakai;Athanasios Paschalis;Christopher A. Oishi

  • Spatial variations in xylem sap flux density in evergreen oak trees with radial-porous wood: comparisons with anatomical observations

    Makiko Tateishi;Tomo’omi Kumagai;Yasuhiro Utsumi;Toshihiro Umebayashi

  • Sources of error in estimating stand transpiration using allometric relationships between stem diameter and sapwood area for Cryptomeria japonica and Chamaecyparis obtusa

    Tomo ' omi Kumagai;Hisami Nagasawa;Tetsuya Mabuchi;Shigeru Ohsaki

  • Strategies of a Bornean tropical rainforest water use as a function of rainfall regime: isohydric or anisohydric?

    Tomo'Omi Kumagai;Amilcare Michele M. Porporato

  • Effects of sample size on sap flux-based stand-scale transpiration estimates

    Tomonori Kume;Kenji Tsuruta;Hikaru Komatsu;Tomo'omi Kumagai

  • Inter-annual variation in growing season length of a tropical seasonal forest in northern Thailand

    Natsuko Yoshifuji;Tomo’omi Kumagai;Katsunori Tanaka;Nobuaki Tanaka

  • Water cycling in a Bornean tropical rain forest under current and projected precipitation scenarios

    Tomo`omi Kumagai;Tomo`omi Kumagai;Gabriel G. Katul;Taku M. Saitoh;Yoshinobu Sato

  • Evapotranspiration of rubber (Hevea brasiliensis) cultivated at two plantation sites in Southeast Asia

    Thomas W. Giambelluca;Ryan G. Mudd;Wen Liu;Alan D. Ziegler

  • Comparison of soil moisture dynamics between a tropical rain forest and a tropical seasonal forest in Southeast Asia: Impact of seasonal and year-to-year variations in rainfall

    Tomo'omi Kumagai;Natsuko Yoshifuji;Nobuaki Tanaka;Masakazu Suzuki

Frequent Co-Authors

Tomonori Kume
Tomonori Kume Kyushu University
Kyoichi Otsuki
Kyoichi Otsuki Kyushu University
Masakazu Suzuki
Masakazu Suzuki University of Tokyo
Gabriel G. Katul
Gabriel G. Katul Duke University
Delphis F. Levia
Delphis F. Levia University of Delaware
Doerthe Tetzlaff
Doerthe Tetzlaff Leibniz Association
Takeshi Ohta
Takeshi Ohta Nagoya University
Thomas W. Giambelluca
Thomas W. Giambelluca University of Hawaii at Manoa
Amilcare Porporato
Amilcare Porporato Princeton University
Robert B. Jackson
Robert B. Jackson Stanford University

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