World's Best Scientists 2026 revealed!
Award Badge
Best Scientists
2026
Award Badge
Environmental Sciences
France
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 225 1 1 1 1 1815 248756
Best Scientists 225 113 101 3 2 1868 227556

P. Ciais publications per year

The chart shows the history of publications by P. Ciais between 1992 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. P. Ciais published across 34 years, from 1992 to 2025, averaging 54.8 papers a year. Output peaked at 181 publications in 2023. 219 of the 1,862 publications appeared in the last two years.

No. of publications
50 100 150
Bar chart. Horizontal axis: year, 1992 to 2025. Vertical axis: number of publications, 0 to 181. Peak 181 publications in 2023. 1992: 1 publication 1993: 0 publications 1994: 6 publications 1995: 4 publications 1996: 5 publications 1997: 3 publications 1998: 2 publications 1999: 8 publications 2000: 4 publications 2001: 4 publications 2002: 20 publications 2003: 14 publications 2004: 17 publications 2005: 22 publications 2006: 17 publications 2007: 30 publications 2008: 27 publications 2009: 39 publications 2010: 61 publications 2011: 49 publications 2012: 51 publications 2013: 73 publications 2014: 68 publications 2015: 77 publications 2016: 93 publications 2017: 115 publications 2018: 121 publications 2019: 90 publications 2020: 149 publications 2021: 149 publications 2022: 143 publications 2023: 181 publications 2024: 120 publications 2025: 99 publications
1992 2025

1,862 publications in total across all disciplines

View publications per year as a table
P. Ciais: publications per year, 1992 to 2025
Year Publications
1992 1
1993 0
1994 6
1995 4
1996 5
1997 3
1998 2
1999 8
2000 4
2001 4
2002 20
2003 14
2004 17
2005 22
2006 17
2007 30
2008 27
2009 39
2010 61
2011 49
2012 51
2013 73
2014 68
2015 77
2016 93
2017 115
2018 121
2019 90
2020 149
2021 149
2022 143
2023 181
2024 120
2025 99
Total 1,862
Download as CSV

P. Ciais publications per year - data summary

  • P. Ciais, a Environmental Sciences scholar from French Alternative Energies and Atomic Energy Commission (CEA), has 1,862 publications recorded across 34 years, from 1992 to 2025.
  • The oldest publication on record dates to 1992 and the most recent to 2025.
  • The most productive year is 2023, with 181 publications.
  • The least productive year with any output is 1992, with 1 publication.
  • 1 of the 34 years in the span carries no publications at all (1993).
  • The rate of publication averages 54.8 papers per year over the whole span, or 56.4 per year counting only the 33 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 692 publications, 37% of the career total.
  • Split into equal eras - 1992-2003: 71 publications (5.9 per year); 2004-2015: 531 publications (44.3 per year); 2016-2025: 1,260 publications (126.0 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

P. Ciais 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 P. Ciais 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, 690+ 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: 1,815 publications — 100th percentile

100% 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
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 1,815
Download as CSV

P. Ciais publication distribution in Environmental Sciences in 2026 - data summary

  • The chart plots the publication count of all 9,676 Environmental Sciences scientists ranked by Research.com in 2026, grouped into 66 ranges running from 41–50 to 690+ publications.
  • P. Ciais, a Environmental Sciences scholar from French Alternative Energies and Atomic Energy Commission (CEA), records 1,815 publications - the 100th percentile of the discipline.
  • 100% of ranked Environmental Sciences scientists score the same or lower than P. Ciais, and about 0% score higher.
  • The median of the discipline falls in the 161–170 publications range, and P. Ciais ranks above the median.
  • The most crowded range is 121–130 publications, holding 617 scientists (6% of the field).
  • 67% of the field sits in the lowest quarter of the value range (up to 201–210 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 690 publications or more, 100 scientists in all (1% of the field).

P. Ciais 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 P. Ciais 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, 126+ 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: 225 D-Index — 100th percentile

100% 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
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+ 92 225
Download as CSV

P. Ciais D-index placement in Environmental Sciences in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 9,676 Environmental Sciences scientists ranked by Research.com in 2026, grouped into 97 ranges running from 30 to 126+ D-Index.
  • P. Ciais, a Environmental Sciences scholar from French Alternative Energies and Atomic Energy Commission (CEA), records 225 D-Index - the 100th percentile of the discipline.
  • 100% of ranked Environmental Sciences scientists score the same or lower than P. Ciais, and about 0% score higher.
  • The median of the discipline falls in the 51 D-Index range, and P. Ciais ranks above the median.
  • The most crowded range is 45 D-Index, holding 348 scientists (4% of the field).
  • 59% of the field sits in the lowest quarter of the value range (up to 54 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 126 D-Index or more, 92 scientists in all (<1% of the field).

Research.com Recognitions

  • 2026 - Research.com Best Scientists Award
  • 2026 - Research.com Environmental Sciences in France Leader Award
  • 2025 - Research.com Best Scientists Award
  • 2025 - Research.com Environmental Sciences in France Leader Award
  • 2023 - Research.com Environmental Sciences in France Leader Award

Overview

P. Ciais is affiliated with the French Alternative Energies and Atomic Energy Commission (CEA) in France. Their research primarily focuses on environmental science with a significant contribution to global and planetary change, atmospheric science, ecology, environmental engineering, and nature and landscape conservation. The scientist's work covers a range of interrelated subfields and main topics relevant to understanding Earth's environmental systems.

The main areas of study include:

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

Their research topics focus on crucial environmental and atmospheric dynamics such as:

  • Atmospheric and Environmental Gas Dynamics
  • Plant Water Relations and Carbon Dynamics
  • Climate Variability and Models
  • Atmospheric Chemistry and Aerosols
  • Remote Sensing in Agriculture
  • Fire Effects on Ecosystems
  • Soil Carbon and Nitrogen Dynamics

P. Ciais has published extensively, contributing to scientific knowledge in various respected publication venues. Frequent venues include:

  • Nature Communications
  • Global Change Biology
  • Zenodo (CERN European Organization for Nuclear Research)
  • Earth System Science Data
  • Nature Climate Change

Recent publications attributed to or related with their work feature notable collaborative scientific efforts and include:

  • "The Global Methane Budget 2000-2017" (2020) in NOAA Institutional Repository
  • "Global Carbon Budget 2020" (2020) in Earth system science data
  • "A comprehensive quantification of global nitrous oxide sources and sinks" (2020) in Nature
  • "Global Carbon Budget 2022" (2022) in Earth system science data
  • "Global Carbon Budget 2021" (2022) in Earth system science data

P. Ciais frequently collaborates with a number of other researchers, the most frequent co-authors being:

  • Frédéric Chevallier
  • Josep Peñuelas
  • Jean-Pierre Wigneron
  • Stephen Sitch
  • Ana Bastos

Best Publications

  • A Large and Persistent Carbon Sink in the World’s Forests

    Yude Pan;Richard A. Birdsey;Jingyun Fang;Jingyun Fang;Richard Houghton

  • Global Carbon Budget 2016

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

  • The impacts of climate change on water resources and agriculture in China

    Shilong Piao;Philippe Ciais;Yao Huang;Zehao Shen

  • Carbon and Other Biogeochemical Cycles

    P. Ciais;C. Sabine;G. Bala;L. Bopp

  • Terrestrial Gross Carbon Dioxide Uptake: Global Distribution and Covariation with Climate

    Christian Beer;Markus Reichstein;Enrico Tomelleri;Philippe Ciais

  • The global methane budget 2000–2017

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

  • Temperature increase reduces global yields of major crops in four independent estimates

    Chuang Zhao;Bing Liu;Shilong Piao;Xuhui Wang

  • Global Carbon Budget 2015

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

  • Contributions to accelerating atmospheric CO2 growth from economic activity, carbon intensity, and efficiency of natural sinks

    Josep G. Canadell;Corinne Le Quéré;Michael R. Raupach;Christopher B. Field

  • 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

  • China and India lead in greening of the world through land-use management

    Chi Chen;Taejin Park;Xuhui Wang;Shilong Piao

  • Global carbon dioxide emissions from inland waters

    Peter A. Raymond;Jens Hartmann;Ronny Lauerwald;Ronny Lauerwald;Sebastian Sobek

  • A dynamic global vegetation model for studies of the coupled atmosphere-biosphere system

    G. Krinner;Nicolas Viovy;Nathalie de Noblet‐Ducoudré;Jérôme Ogée;Jérôme Ogée

  • Greening of the Earth and its drivers

    Zaichun Zhu;Zaichun Zhu;Shilong Piao;Shilong Piao;Ranga B. Myneni;Mengtian Huang

  • Trends in the sources and sinks of carbon dioxide

    Corinne Le Quéré;Corinne Le Quéré;Michael R. Raupach;Josep G. Canadell;Gregg Marland

  • Global Carbon Budget 2018

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

  • Three decades of global methane sources and sinks

    Stefanie Kirschke;Philippe Bousquet;Philippe Ciais;Marielle Saunois

  • Recent decline in the global land evapotranspiration trend due to limited moisture supply

    Martin Jung;Markus Reichstein;Philippe Ciais;Sonia I. Seneviratne

  • Global Carbon Budget 2020

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

  • Old-growth forests as global carbon sinks.

    Sebastiaan Luyssaert;Ernst Detlef Schulze;Annett Börner;Alexander Knohl

  • Climate extremes and the carbon cycle

    Markus Reichstein;Michael Bahn;Philippe Ciais;Dorothea Frank

  • Global Carbon Budget 2019

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

Frequent Co-Authors

F. Chevallier
F. Chevallier University of Paris-Saclay
Pierre Friedlingstein
Pierre Friedlingstein University of Exeter
Philippe Peylin
Philippe Peylin Centre national de la recherche scientifique, CNRS
Nicolas Viovy
Nicolas Viovy French Alternative Energies and Atomic Energy Commission (CEA)
Peter Rayner
Peter Rayner University of Melbourne
Stephen Sitch
Stephen Sitch University of Exeter
Martina Schmidt
Martina Schmidt Johannes Gutenberg University of Mainz
Markus Reichstein
Markus Reichstein Max Planck Institute for Biogeochemistry
Sebastiaan Luyssaert
Sebastiaan Luyssaert Vrije Universiteit Amsterdam
Fabienne Maignan
Fabienne Maignan French Alternative Energies and Atomic Energy Commission (CEA)

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Exploring Environmental Sciences often leads students to consider complementary fields that broaden their expertise and increase career options. For those seeking flexible study options, pursuing one of the easy bachelor's degree programs online can be a good starting point, blending foundational knowledge without overwhelming coursework.

Many students gravitate toward specialties like geology and geoscience to deepen their understanding of Earth systems. Top institutions offering geology degrees online provide practical, research-driven curricula that equip graduates for roles in environmental consulting, resource management, and hazard assessment.

Additionally, Geographic Information Systems (GIS) skills are increasingly vital for managing environmental data. Enrolling in the best GIS graduate programs online allows students to master spatial analysis tools that support sustainable development and conservation efforts.

For those interested in leadership and policy within environmental sectors, combining a science background with administrative skills is invaluable. Accelerated options such as 1 year mpa programs prepare professionals to navigate public administration roles effectively, influencing environmental regulations and community initiatives.

Best Scientists Citing P. Ciais

Trending Scientists

Recently Published Articles