World's Best Scientists 2026 revealed!
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Biology and Biochemistry
Austria
2026
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Environmental Sciences
Austria
2026

D-Index & Metrics

Environmental Sciences

D-Index
119
Citations
118111
World Ranking
128
National Ranking
3

Biology and Biochemistry

D-Index
100
Citations
99322
World Ranking
1479
National Ranking
9

Keywan Riahi 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 Keywan Riahi 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: 411 publications — 94th percentile

94% of scientists in this discipline score the same or lower.

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

Keywan Riahi 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 Keywan Riahi 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: 119 D-Index — 99th percentile

99% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2026 - Research.com Biology and Biochemistry in Austria Leader Award
  • 2026 - Research.com Environmental Sciences in Austria Leader Award
  • 2025 - Research.com Environmental Sciences in Austria Leader Award
  • 2023 - Research.com Biology and Biochemistry in Austria Leader Award
  • 2023 - Research.com Environmental Sciences in Austria Leader Award
  • 2022 - Research.com Biology and Biochemistry in Austria Leader Award
  • 2022 - Research.com Environmental Sciences in Austria Leader Award

Overview

Keywan Riahi is affiliated with the International Institute for Applied Systems Analysis in Austria. Their research primarily spans the field of Environmental Science, with a focus on various subfields including Economics and Econometrics, Global and Planetary Change, Environmental Engineering, Mechanical Engineering, and Renewable Energy, Sustainability and the Environment.

The scientist's work covers a range of topics, notably Climate Change Policy and Economics, Atmospheric and Environmental Gas Dynamics, Environmental Impact and Sustainability, Carbon Dioxide Capture Technologies, Energy and Environment Impacts, Energy, Environment, and Transportation Policies, and Water-Energy-Food Nexus Studies.

Riahi has contributed to multiple publication venues, with frequent appearances in:

  • Zenodo (CERN European Organization for Nuclear Research)
  • Nature Climate Change
  • IIASA PURE (International Institute of Applied Systems Analysis)
  • Environmental Research Letters
  • Nature Communications

Notable recent papers by Keywan Riahi include:

  • Harmonization of global land use change and management for the period 850-2100 (LUH2) for CMIP6, 2020, Geoscientific model development
  • Climate model projections from the Scenario Model Intercomparison Project (ScenarioMIP) of CMIP6, 2021, Earth System Dynamics
  • Achievements and needs for the climate change scenario framework, 2020, Nature Climate Change
  • Taking stock of national climate policies to evaluate implementation of the Paris Agreement, 2020, Nature Communications
  • Author Correction: Implications of intercontinental renewable electricity trade for energy systems and emissions, 2023, Nature Energy

Among frequent co-authors are Volker Krey, Bas van Ruijven, Detlef P. van Vuuren, Edward Byers, and Oliver Fricko, reflecting collaborations across multiple projects related to environmental and climate research.

Keywan Riahi has also contributed to book publications with the International Institute for Applied Systems Analysis, including the work titled Methodologies and Tools for Integrated Systems Modelling published in 2020.

Best Publications

  • The representative concentration pathways: an overview

    Detlef P. van Vuuren;Detlef P. van Vuuren;Jae Edmonds;Mikiko Kainuma;Keywan Riahi

  • Special report on emissions scenarios : a special report of Working group III of the Intergovernmental Panel on Climate Change

    N. Nakicenovic;J. Alcamo;G. Davis;B. de Vries

  • Special report on emissions scenarios

    Nebojsa Nakicenovic;Joseph Alcamo;Gerald Davis;Bert de Vries

  • The next generation of scenarios for climate change research and assessment

    Richard H. Moss;Jae A. Edmonds;Kathy A. Hibbard;Martin R. Manning

  • The Shared Socioeconomic Pathways and their energy, land use, and greenhouse gas emissions implications: An overview

    Keywan Riahi;Detlef P. van Vuuren;Elmar Kriegler;Jae Edmonds

  • Climate Change 2007 Synthesis report

    Lenny Bernstein;Peter Bosch;Osvaldo Canziani;Zhenlin Chen

  • The Scenario Model Intercomparison Project (ScenarioMIP) for CMIP6

    Brian C. O'Neill;Claudia Tebaldi;Detlef P. Van Vuuren;Detlef P. Van Vuuren;Veronika Eyring

  • The RCP greenhouse gas concentrations and their extensions from 1765 to 2300

    Malte Meinshausen;Malte Meinshausen;S. J. Smith;K. Calvin;J. S. Daniel

  • Paris Agreement climate proposals need a boost to keep warming well below 2 °C

    Joeri Rogelj;Joeri Rogelj;Michel den Elzen;Niklas Höhne;Taryn Fransen

  • The roads ahead: Narratives for shared socioeconomic pathways describing world futures in the 21st century

    Brian C. O'Neill;Elmar Kriegler;Kristie L. Ebi;Eric Kemp-Benedict

  • RCP 8.5—A scenario of comparatively high greenhouse gas emissions

    Keywan Riahi;Shilpa Rao;Volker Krey;Cheolhung Cho

  • A new scenario framework for climate change research: the concept of shared socioeconomic pathways

    Brian C. O’Neill;Elmar Kriegler;Keywan Riahi;Kristie Lee Ebi

  • Historical (1850–2000) gridded anthropogenic and biomass burning emissions of reactive gases and aerosols: methodology and application

    J.-F. Lamarque;T. C. Bond;V. Eyring;Claire Granier;Claire Granier;Claire Granier

  • IPCC, 2007: Climate Change 2007: Synthesis Report

    L. Bernstein;P. Bosch;O. Canziani;Z. Chen

  • Scenarios of long-term socio-economic and environmental development under climate stabilization

    Keywan Riahi;Arnulf Grübler;Arnulf Grübler;Nebojsa Nakicenovic

  • Harmonization of land-use scenarios for the period 1500–2100: 600 years of global gridded annual land-use transitions, wood harvest, and resulting secondary lands

    G. C. Hurtt;G. C. Hurtt;L. P. Chini;S. Frolking;R. A. Betts

  • Scenarios towards limiting global mean temperature increase below 1.5 °C

    Joeri Rogelj;Joeri Rogelj;Alexander Popp;Katherine V. Calvin;Gunnar Luderer

  • The hydrogen economy in the 21st century: a sustainable development scenario

    L Barreto;A Makihira;A Makihira;K Riahi

  • A low energy demand scenario for meeting the 1.5 °c target and sustainable development goals without negative emission technologies

    Arnulf Grubler;Charlie Wilson;Charlie Wilson;Nuno Bento;Nuno Bento;Benigna Boza-Kiss

  • Energy system transformations for limiting end-of-century warming to below 1.5 °C

    Joeri Rogelj;Joeri Rogelj;Gunnar Luderer;Robert C. Pietzcker;Elmar Kriegler

  • Thenextgenerationofscenariosforclimate change research and assessment

    RichardH . Moss;Timothy R. Carter;Seita Emori;Mikiko Kainuma

Frequent Co-Authors

Detlef P. van Vuuren
Detlef P. van Vuuren Utrecht University
Volker Krey
Volker Krey International Institute for Applied Systems Analysis
Joeri Rogelj
Joeri Rogelj Imperial College London
David L. McCollum
David L. McCollum Oak Ridge National Laboratory
Elmar Kriegler
Elmar Kriegler Potsdam Institute for Climate Impact Research
Nebojsa Nakicenovic
Nebojsa Nakicenovic International Institute for Applied Systems Analysis
Shinichiro Fujimori
Shinichiro Fujimori Kyoto University
Massimo Tavoni
Massimo Tavoni Polytechnic University of Milan
Malte Meinshausen
Malte Meinshausen University of Melbourne
Arnulf Grubler
Arnulf Grubler International Institute for Applied Systems Analysis

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Related Online Degrees & Career Pathways

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For those aiming to lead in public sector or nonprofit environmental initiatives, an online Master of Public Administration (MPA) can provide strategic and managerial skills. The top online MPA programs offer accelerated paths to influence environmental policy and community development effectively.

Lastly, understanding human behavior and social structures is vital in tackling environmental challenges. Students may consider an online sociology degree bachelors to deepen their insight into social dynamics, which complements environmental work focused on sustainability and community resilience.

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