World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
71
Citations
41981
World Ranking
1534
National Ranking
649

Ralph F. Keeling 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 Ralph F. Keeling 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: 257 publications — 79th percentile

79% of scientists in this discipline score the same or lower.

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

Ralph F. Keeling 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 Ralph F. Keeling 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: 71 D-Index — 84th percentile

84% 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

  • 2014 - Fellow of American Geophysical Union (AGU)

Overview

Ralph F. Keeling is affiliated with the University of California, San Diego in the United States. Their research focuses predominantly on environmental science and earth and planetary sciences, with significant contributions in the study of atmospheric and environmental gas dynamics, atmospheric chemistry and aerosols, and climate variability and models.

The main fields of study for Keeling include:

  • Environmental Science
  • Earth and Planetary Sciences

Within these broad fields, the subfields of study encompass:

  • Global and Planetary Change
  • Atmospheric Science
  • Oceanography
  • Health, Toxicology and Mutagenesis
  • Environmental Chemistry

Keeling's work covers major topics such as:

  • Atmospheric and Environmental Gas Dynamics
  • Atmospheric chemistry and aerosols
  • Atmospheric Ozone and Climate
  • Climate variability and models
  • Marine and coastal ecosystems
  • Plant Water Relations and Carbon Dynamics
  • Oceanographic and Atmospheric Processes

Frequent publication venues for Keeling's research include:

  • Atmospheric Measurement Techniques
  • Earth System Science Data
  • Global Biogeochemical Cycles
  • Global Change Biology
  • Atmospheric Chemistry and Physics

Recent papers illustrate the breadth and focus of Keeling's scientific contributions:

  • Global Carbon Budget 2023, Earth System Science Data, 2023
  • Integrating the evidence for a terrestrial carbon sink caused by increasing atmospheric CO 2, New Phytologist, 2020
  • Global Carbon Budget 2024, Earth System Science Data, 2025
  • Changes to Carbon Isotopes in Atmospheric CO2 Over the Industrial Era and Into the Future, Global Biogeochemical Cycles, 2020
  • The NASA Atmospheric Tomography (ATom) Mission: Imaging the Chemistry of the Global Atmosphere, Bulletin of the American Meteorological Society, 2021

Keeling has collaborated extensively with several frequent co-authors, including:

  • Eric J. Morgan
  • Britton B. Stephens
  • Christian Rödenbeck
  • Benjamin Birner
  • Frédéric Chevallier

In 2014, Keeling was recognized as a Fellow of the American Geophysical Union (AGU), marking acknowledgment within the scientific community related to their research contributions.

Best Publications

  • Global Carbon Budget 2016

    Corinne Le Quere;Robbie M. Andrew;Josep G. Canadell;Stephen Sitch

  • Global Carbon Budget 2015

    C. Le Quéré;R. Moriarty;R. M. Andrew;J. G. Canadell

  • Global carbon budget 2014

    C. Le Quéré;R. Moriarty;R. M. Andrew;G. P. Peters

  • Global carbon budget 2013

    C. Le Quere;G.P. Peters;R.J. Andres;Robbie M Andrew

  • Global Carbon Budget 2018

    Corinne Le Quéré;Robbie M. Andrew;Pierre Friedlingstein;Stephen Sitch

  • The carbon cycle and atmospheric CO2

    IC Prentice;GD Farquhar;Mjr Fasham;ML Goulden

  • Ocean Deoxygenation in a Warming World

    Ralph F. Keeling;Arne Körtzinger;Nicolas Gruber

  • Global Carbon Budget 2019

    Pierre Friedlingstein;Pierre Friedlingstein;Matthew W. Jones;Michael O'Sullivan;Robbie Andrew

  • Global Carbon Budget 2017

    Corinne Le Quere;Robbie M. Andrew;Pierre Friedlingstein;Stephen Sitch

  • Global Carbon Budget 2023

    Unknown

  • Recent Climate Observations Compared to Projections

    Stefan Rahmstorf;Anny Cazenave;John A. Church;James E. Hansen

  • Global and hemispheric CO2 sinks deduced from changes in atmospheric O2 concentration

    Ralph F. Keeling;Stephen C. Piper;Martin Heimann

  • Atmospheric CO 2 records from sites in the SIO air sampling network

    Unknown

  • The global carbon budget 1959-2011

    C. Le Quere;R.J. Andres;T.A. Boden;T. Conway

  • A multi-decade record of high-quality fCO2 data in version 3 of the Surface Ocean CO2 Atlas (SOCAT)

    Dorothee C. E. Bakker;Benjamin Pfeil;Benjamin Pfeil;Camilla S. Landa;Camilla S. Landa;Nicolas Metzl

  • Seasonal and interannual variations in atmospheric oxygen and implications for the global carbon cycle

    Ralph F. Keeling;Stephen R. Shertz

  • The influence of Antarctic sea ice on glacial-interglacial CO2 variations

    Britton B. Stephens;Ralph F. Keeling

  • Integrating the evidence for a terrestrial carbon sink caused by increasing atmospheric CO2

    Anthony P. Walker;Martin G. De Kauwe;Ana Bastos;Soumaya Belmecheri

  • Enhanced seasonal CO2 exchange caused by amplified plant productivity in northern ecosystems

    Matthias Forkel;Nuno Carvalhais;Christian Rödenbeck;Ralph Keeling

  • Enhanced Seasonal Exchange of CO2 by Northern Ecosystems Since 1960

    H. D. Graven;R. F. Keeling;S. C. Piper;P. K. Patra

  • The change in oceanic O2 inventory associated with recent global warming

    Ralph F. Keeling;Hernan E. Garcia

  • Global oceanic and land biotic carbon sinks from the Scripps atmospheric oxygen flask sampling network

    Andrew C. Manning;Ralph F. Keeling

Frequent Co-Authors

Britton B. Stephens
Britton B. Stephens National Center for Atmospheric Research
Christian Rödenbeck
Christian Rödenbeck Max Planck Institute for Biogeochemistry
Martin Heimann
Martin Heimann Max Planck Institute for Biogeochemistry
Laurent Bopp
Laurent Bopp École Normale Supérieure
Ray F. Weiss
Ray F. Weiss University of California, San Diego
Sönke Zaehle
Sönke Zaehle Max Planck Society
Matthew C. Long
Matthew C. Long National Center for Atmospheric Research
Are Olsen
Are Olsen University of Bergen
Bronte Tilbrook
Bronte Tilbrook CSIRO Marine and Atmospheric Research
Laure Resplandy
Laure Resplandy Princeton University

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