World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
60
Citations
14867
World Ranking
2892
National Ranking
37

Toshinobu Machida 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 Toshinobu Machida sits on this spectrum.

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: 283 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: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 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 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 298 publications — 85th percentile

85% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

Toshinobu Machida 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 Toshinobu Machida sits on this spectrum.

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: 199 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: 19 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: 99 scientists
30 D-Index 125+

This scientist: 60 D-Index — 71st percentile

71% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 125 D-Index or more.

Overview

Toshinobu Machida is affiliated with the National Institute for Environmental Studies in Japan. Their research spans several interconnected domains within Earth and Environmental Sciences, with notable contributions in Atmospheric Science, Global and Planetary Change, and Environmental Chemistry. Their work primarily intersects topics such as Atmospheric and Environmental Gas Dynamics, Atmospheric chemistry and aerosols, and Atmospheric Ozone and Climate.

Their publication record includes numerous articles featured in prominent journals, reflecting ongoing engagement with current scientific dialogues. Frequent publication venues include:

  • Atmospheric chemistry and physics
  • Journal of Geophysical Research Atmospheres
  • Progress in Earth and Planetary Science
  • Scientific Reports
  • Polar Science

Machida has collaborated extensively with several researchers, particularly with:

  • Prabir K. Patra (16 joint publications)
  • Motoki Sasakawa (11 joint publications)
  • Yosuke Niwa (10 joint publications)
  • Yasunori Tohjima (9 joint publications)
  • Hiroshi Tanimoto (8 joint publications)

Selected recent papers authored or co-authored by Toshinobu Machida include:

  • "The Global Methane Budget 2000-2017" (2020), published in NOAA Institutional Repository
  • "Siberian and temperate ecosystems shape Northern Hemisphere atmospheric CO 2 seasonal amplification" (2020), published in Proceedings of the National Academy of Sciences
  • "Technical note: A high-resolution inverse modelling technique for estimating surface CO 2 fluxes based on the NIES-TM-FLEXPART coupled transport model and its adjoint" (2021), published in Atmospheric chemistry and physics
  • "Detection of fossil-fuel CO2 plummet in China due to COVID-19 by observation at Hateruma" (2020), published in Scientific Reports
  • "Statistical characterization of urban CO2 emission signals observed by commercial airliner measurements" (2020), published in Scientific Reports

Their research focuses on understanding atmospheric phenomena, with particular attention to greenhouse gas dynamics, emission patterns, and climate-related atmospheric processes. The scientist's work addresses environmental challenges by quantifying sources and sinks of gases such as methane and carbon dioxide in various ecosystems, including urban and Siberian regions.

Machida's contributions to atmospheric modeling involve advanced inverse modeling techniques designed to improve the estimation of surface CO 2 fluxes. These techniques support more accurate tracking of anthropogenic and natural emissions over time, which is crucial for climate change research.

Throughout their career, the scientist has concentrated on topics including:

  • Atmospheric and Environmental Gas Dynamics
  • Atmospheric chemistry and aerosols
  • Atmospheric Ozone and Climate
  • Climate variability and models
  • Climate change and permafrost
  • Meteorological Phenomena and Simulations
  • Methane Hydrates and Related Phenomena

Best Publications

  • The global methane budget 2000–2017

    Marielle Saunois;Ann R. Stavert;Ben Poulter;Philippe Bousquet

  • The global methane budget 2000–2012

    Marielle Saunois;Philippe Bousquet;Ben Poulter;Anna Peregon

  • Weak northern and strong tropical land carbon uptake from vertical profiles of atmospheric CO2

    Britton B. Stephens;Kevin R. Gurney;Pieter P. Tans;Colm Sweeney

  • Calibration of the Total Carbon Column Observing Network using aircraft profile data

    Debra Wunch;Geoffrey C. Toon;Paul O. Wennberg;Steven C. Wofsy

  • CO2 surface fluxes at grid point scale estimated from a global 21 year reanalysis of atmospheric measurements

    F. Chevallier;P. Ciais;T. J. Conway;T. Aalto

  • Worldwide Measurements of Atmospheric CO2 and Other Trace Gas Species Using Commercial Airlines

    T. Machida;H. Matsueda;Y. Sawa;Y. Nakagawa

  • Increase in the atmospheric nitrous oxide concentration during the last 250 years

    T. Machida;T. Nakazawa;Y. Fujii;S. Aoki

  • First year of upper tropospheric integrated content of CO 2 from IASI hyperspectral infrared observations

    C. Crevoisier;A. Chédin;H. Matsueda;T. Machida

  • A strong source of methyl chloride to the atmosphere from tropical coastal land.

    Y. Yokouchi;Y. Noijiri;L. A. Barrie;D. Toom-Sauntry

  • Regional methane emission from West Siberia mire landscapes

    M. Glagolev;M. Glagolev;I. Kleptsova;I. Filippov;S. Maksyutov

  • Continuous measurements of methane from a tower network over Siberia

    M. Sasakawa;K. Shimoyama;T. Machida;N. Tsuda

  • Top–down assessment of the Asian carbon budget since the mid 1990s

    Rona Louise Thompson;P.K. Patra;F Chevallier;S. Maksyutov

  • Rapamycin causes upregulation of autophagy and impairs islets function both in vitro and in vivo.

    M. Tanemura;Y. Ohmura;T. Deguchi;T. Machida

  • Isoprene in the marine boundary layer (southeast Asian Sea, eastern Indian Ocean, and Southern Ocean): Comparison with dimethyl sulfide and bromoform

    Yoko Yokouchi;Hong Jun Li;Hong Jun Li;Toshinobu Machida;Shuji Aoki

  • Variability and quasi-decadal changes in the methane budget over the period 2000-2012

    Marielle Saunois;Philippe Bousquet;Ben Poulter;Anna Peregon

  • Modeling global atmospheric CO 2 with improved emission inventories and CO 2 production from the oxidation of other carbon species

    R. Nassar;R. Nassar;D. B. A. Jones;P. Suntharalingam;J. M. Chen

  • Characterization of Tropospheric Emission Spectrometer (TES) CO 2 for carbon cycle science

    S. S. Kulawik;D. B. A. Jones;R. Nassar;F. W. Irion

  • Global and regional emissions estimates for N 2 O

    E. Saikawa;E. Saikawa;R. G. Prinn;E. Dlugokencky;K. Ishijima

  • A comprehensive estimate of recent carbon sinks in China using both top-down and bottom-up approaches

    Fei Jiang;Jing M Chen;Jing M Chen;Lingxi Zhou;Weimin Ju

  • Combined transplantation of pancreatic islets and adipose tissue-derived stem cells enhances the survival and insulin function of islet grafts in diabetic mice.

    Yoshiaki Ohmura;Masahiro Tanemura;Naomasa Kawaguchi;Tomohiko Machida

  • Aircraft measurements of the concentrations of CO2, CH4, N2O, and CO and the carbon and oxygen isotopic ratios of CO2 in the troposphere over Russia

    Takakiyo Nakazawa;Satoshi Sugawara;Gen Inoue;Toshinobu Machida

  • Global Methane Budget 2000-2012

    M. Saunois;P. Bousquet;B. Poulter;A. Peregon

Frequent Co-Authors

Hidekazu Matsueda
Hidekazu Matsueda Japan Meteorological Agency
Shamil Maksyutov
Shamil Maksyutov National Institute for Environmental Studies
Prabir K. Patra
Prabir K. Patra Japan Agency for Marine-Earth Science and Technology
Shuji Aoki
Shuji Aoki Tohoku University
Takakiyo Nakazawa
Takakiyo Nakazawa Tohoku University
Hitoshi Mukai
Hitoshi Mukai National Institute for Environmental Studies
Akihiko Ito
Akihiko Ito University of Tokyo
Isamu Morino
Isamu Morino National Institute for Environmental Studies
Edward J. Dlugokencky
Edward J. Dlugokencky National Oceanic and Atmospheric Administration
Colm Sweeney
Colm Sweeney National Oceanic and Atmospheric Administration

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