World's Best Scientists 2026 revealed!
Abdirahman M Omar

Abdirahman M Omar

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 31 8818 8195 133 125 197 12601

Abdirahman M Omar publications per year

The chart shows the history of publications by Abdirahman M Omar between 1990 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Abdirahman M Omar published across 36 years, from 1990 to 2025, averaging 6.7 papers a year. Output peaked at 71 publications in 2017. 10 of the 240 publications appeared in the last two years.

No. of publications
20 40 60
Bar chart. Horizontal axis: year, 1990 to 2025. Vertical axis: number of publications, 0 to 71. Peak 71 publications in 2017. 1990: 1 publication 1991: 1 publication 1992: 0 publications 1993: 0 publications 1994: 0 publications 1995: 0 publications 1996: 0 publications 1997: 0 publications 1998: 0 publications 1999: 2 publications 2000: 1 publication 2001: 2 publications 2002: 0 publications 2003: 2 publications 2004: 1 publication 2005: 1 publication 2006: 4 publications 2007: 1 publication 2008: 1 publication 2009: 11 publications 2010: 6 publications 2011: 44 publications 2012: 7 publications 2013: 11 publications 2014: 14 publications 2015: 4 publications 2016: 8 publications 2017: 71 publications 2018: 2 publications 2019: 12 publications 2020: 6 publications 2021: 6 publications 2022: 6 publications 2023: 5 publications 2024: 5 publications 2025: 5 publications
1990 2025

240 publications in total across all disciplines

View publications per year as a table
Abdirahman M Omar: publications per year, 1990 to 2025
Year Publications
1990 1
1991 1
1992 0
1993 0
1994 0
1995 0
1996 0
1997 0
1998 0
1999 2
2000 1
2001 2
2002 0
2003 2
2004 1
2005 1
2006 4
2007 1
2008 1
2009 11
2010 6
2011 44
2012 7
2013 11
2014 14
2015 4
2016 8
2017 71
2018 2
2019 12
2020 6
2021 6
2022 6
2023 5
2024 5
2025 5
Total 240
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Abdirahman M Omar publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where Abdirahman M Omar sits on this spectrum.

No. of scientists
100 200 300 400 500
Bar chart with 58 bars. Horizontal axis: publications, 38–47 to 603+. Vertical axis: number of scientists, 0 to 557. Most scientists, 557, have 128–137 publications. The last bar groups every scientist with 603 publications or more. The highlighted bar, 188–197 publications, is where this scientist sits. 38–47 publications: 5 scientists 48–57 publications: 33 scientists 58–67 publications: 94 scientists 68–77 publications: 161 scientists 78–87 publications: 278 scientists 88–97 publications: 376 scientists 98–107 publications: 404 scientists 108–117 publications: 484 scientists 118–127 publications: 540 scientists 128–137 publications: 557 scientists 138–147 publications: 491 scientists 148–157 publications: 495 scientists 158–167 publications: 458 scientists 168–177 publications: 490 scientists 178–187 publications: 414 scientists 188–197 publications: 401 scientists 198–207 publications: 333 scientists 208–217 publications: 292 scientists 218–227 publications: 290 scientists 228–237 publications: 262 scientists 238–247 publications: 243 scientists 248–257 publications: 208 scientists 258–267 publications: 185 scientists 268–277 publications: 147 scientists 278–287 publications: 128 scientists 288–297 publications: 119 scientists 298–307 publications: 120 scientists 308–317 publications: 107 scientists 318–327 publications: 93 scientists 328–337 publications: 87 scientists 338–347 publications: 64 scientists 348–357 publications: 87 scientists 358–367 publications: 60 scientists 368–377 publications: 60 scientists 378–387 publications: 34 scientists 388–397 publications: 50 scientists 398–407 publications: 44 scientists 408–417 publications: 31 scientists 418–427 publications: 39 scientists 428–437 publications: 27 scientists 438–447 publications: 36 scientists 448–457 publications: 27 scientists 458–467 publications: 29 scientists 468–477 publications: 30 scientists 478–487 publications: 19 scientists 488–497 publications: 15 scientists 498–507 publications: 18 scientists 508–517 publications: 19 scientists 518–527 publications: 16 scientists 528–537 publications: 10 scientists 538–547 publications: 11 scientists 548–557 publications: 14 scientists 558–567 publications: 11 scientists 568–577 publications: 7 scientists 578–587 publications: 14 scientists 588–597 publications: 5 scientists 598–602 publications: 4 scientists 603+ publications: 100 scientists
38–47 publications 603+

This scientist: 197 publications — 62nd percentile

62% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 603 publications or more.

View publications distribution as a table
Number of Earth Science scientists by publication count, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
Publications Scientists This scientist
38–47 5
48–57 33
58–67 94
68–77 161
78–87 278
88–97 376
98–107 404
108–117 484
118–127 540
128–137 557
138–147 491
148–157 495
158–167 458
168–177 490
178–187 414
188–197 401 197
198–207 333
208–217 292
218–227 290
228–237 262
238–247 243
248–257 208
258–267 185
268–277 147
278–287 128
288–297 119
298–307 120
308–317 107
318–327 93
328–337 87
338–347 64
348–357 87
358–367 60
368–377 60
378–387 34
388–397 50
398–407 44
408–417 31
418–427 39
428–437 27
438–447 36
448–457 27
458–467 29
468–477 30
478–487 19
488–497 15
498–507 18
508–517 19
518–527 16
528–537 10
538–547 11
548–557 14
558–567 11
568–577 7
578–587 14
588–597 5
598–602 4
603+ 100
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Abdirahman M Omar D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where Abdirahman M Omar sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 77 bars. Horizontal axis: D-Index, 30 to 106+. Vertical axis: number of scientists, 0 to 389. Most scientists, 389, have 36 D-Index. The last bar groups every scientist with 106 D-Index or more. The highlighted bar, 31 D-Index, is where this scientist sits. 30 D-Index: 144 scientists 31 D-Index: 215 scientists 32 D-Index: 278 scientists 33 D-Index: 379 scientists 34 D-Index: 366 scientists 35 D-Index: 372 scientists 36 D-Index: 389 scientists 37 D-Index: 366 scientists 38 D-Index: 344 scientists 39 D-Index: 349 scientists 40 D-Index: 296 scientists 41 D-Index: 289 scientists 42 D-Index: 277 scientists 43 D-Index: 279 scientists 44 D-Index: 248 scientists 45 D-Index: 257 scientists 46 D-Index: 212 scientists 47 D-Index: 202 scientists 48 D-Index: 207 scientists 49 D-Index: 204 scientists 50 D-Index: 183 scientists 51 D-Index: 178 scientists 52 D-Index: 182 scientists 53 D-Index: 178 scientists 54 D-Index: 163 scientists 55 D-Index: 117 scientists 56 D-Index: 163 scientists 57 D-Index: 120 scientists 58 D-Index: 113 scientists 59 D-Index: 136 scientists 60 D-Index: 135 scientists 61 D-Index: 96 scientists 62 D-Index: 103 scientists 63 D-Index: 83 scientists 64 D-Index: 103 scientists 65 D-Index: 83 scientists 66 D-Index: 89 scientists 67 D-Index: 92 scientists 68 D-Index: 89 scientists 69 D-Index: 78 scientists 70 D-Index: 75 scientists 71 D-Index: 53 scientists 72 D-Index: 62 scientists 73 D-Index: 54 scientists 74 D-Index: 35 scientists 75 D-Index: 52 scientists 76 D-Index: 50 scientists 77 D-Index: 32 scientists 78 D-Index: 37 scientists 79 D-Index: 20 scientists 80 D-Index: 33 scientists 81 D-Index: 36 scientists 82 D-Index: 34 scientists 83 D-Index: 34 scientists 84 D-Index: 24 scientists 85 D-Index: 19 scientists 86 D-Index: 18 scientists 87 D-Index: 26 scientists 88 D-Index: 30 scientists 89 D-Index: 17 scientists 90 D-Index: 21 scientists 91 D-Index: 19 scientists 92 D-Index: 15 scientists 93 D-Index: 14 scientists 94 D-Index: 20 scientists 95 D-Index: 9 scientists 96 D-Index: 10 scientists 97 D-Index: 15 scientists 98 D-Index: 13 scientists 99 D-Index: 3 scientists 100 D-Index: 13 scientists 101 D-Index: 3 scientists 102 D-Index: 9 scientists 103 D-Index: 4 scientists 104 D-Index: 6 scientists 105 D-Index: 6 scientists 106+ D-Index: 98 scientists
30 D-Index 106+

This scientist: 31 D-Index — 4th percentile

4% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 106 D-Index or more.

View D-Index distribution as a table
Number of Earth Science scientists by D-index, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
D-Index Scientists This scientist
30 144
31 215 31
32 278
33 379
34 366
35 372
36 389
37 366
38 344
39 349
40 296
41 289
42 277
43 279
44 248
45 257
46 212
47 202
48 207
49 204
50 183
51 178
52 182
53 178
54 163
55 117
56 163
57 120
58 113
59 136
60 135
61 96
62 103
63 83
64 103
65 83
66 89
67 92
68 89
69 78
70 75
71 53
72 62
73 54
74 35
75 52
76 50
77 32
78 37
79 20
80 33
81 36
82 34
83 34
84 24
85 19
86 18
87 26
88 30
89 17
90 21
91 19
92 15
93 14
94 20
95 9
96 10
97 15
98 13
99 3
100 13
101 3
102 9
103 4
104 6
105 6
106+ 98
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Overview

Abdirahman M Omar is affiliated with NORCE Research in Norway and has contributed extensively to environmental science and earth and planetary sciences. Their research primarily focuses on oceanography and global and planetary change, with additional work in environmental engineering, atmospheric science, and ecology.

Their recent publications include:

  • Global Carbon Budget 2023, 2023, Earth system science data
  • Acidification of the Nordic Seas, 2022, Biogeosciences
  • Suitability analysis and revised strategies for marine environmental carbon capture and storage (CCS) monitoring, 2021, International journal of greenhouse gas control
  • Assuring the integrity of offshore carbon dioxide storage, 2022, Renewable and Sustainable Energy Reviews
  • Optimal sensors placement for detecting CO2 discharges from unknown locations on the seafloor, 2020, International journal of greenhouse gas control

The main topics covered in their work include:

  • Ocean Acidification Effects and Responses
  • Atmospheric and Environmental Gas Dynamics
  • CO2 Sequestration and Geologic Interactions
  • Marine and coastal ecosystems
  • Climate variability and models
  • Coral and Marine Ecosystems Studies
  • Methane Hydrates and Related Phenomena

Frequent collaborators in their research are:

  • Guttorm Alendal
  • Anna Oleynik
  • Are Olsen
  • Jerry Blackford
  • Ingunn Skjelvan

Abdirahman M Omar's work is published in several scientific venues, including:

  • SSRN Electronic Journal
  • International journal of greenhouse gas control
  • Earth system science data
  • Biogeosciences
  • Renewable and Sustainable Energy Reviews

Their research fields are primarily Environmental Science and Earth and Planetary Sciences, with a strong emphasis on oceanography and climate-related studies. The scope and interdisciplinary nature of their work reflect a focus on understanding environmental changes and their impacts, particularly related to oceans, atmospheric gases, and carbon capture technologies.

Best Publications

  • Global Carbon Budget 2016

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

  • Global carbon budget 2013

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

  • Global Carbon Budget 2019

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

  • 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

  • THE ROLE OF THE BARENTS SEA IN THE ARCTIC CLIMATE SYSTEM

    Lars H. Smedsrud;Igor Esau;Randi B. Ingvaldsen;Tor Eldevik;Tor Eldevik

  • A uniform, quality controlled Surface Ocean CO2 Atlas (SOCAT)

    B. Pfeil;B. Pfeil;B. Pfeil;A. Olsen;D.C.E. Bakker;S. Hankin

  • An update to the Surface Ocean CO2 Atlas (SOCAT version 2)

    Dorothee C. E. Bakker;Benjamin Pfeil;Benjamin Pfeil;K. Smith;K. Smith;S. Hankin

  • Surface Ocean CO2 Atlas (SOCAT) gridded data products

    C.L. Sabine;S. Hankin;H. Koyuk;H. Koyuk;D.C.E. Bakker

  • Estimating the monthly pCO2 distribution in the North Atlantic using a self-organizing neural network

    M. Telszewski;A. Chazottes;U. Schuster;A. J. Watson

  • Magnitude and origin of the anthropogenic CO2 increase and 13C Suess effect in the Nordic seas since 1981

    Are Olsen;Are Olsen;Abdirahman M. Omar;Abdirahman M. Omar;Richard G. J. Bellerby;Richard G. J. Bellerby;Truls Johannessen;Truls Johannessen

  • Mapping of the air–sea CO2 flux in the Arctic Ocean and its adjacent seas: Basin-wide distribution and seasonal to interannual variability

    Sayaka Yasunaka;Akihiko Murata;Eiji Watanabe;Melissa Chierici

  • Interannual variability in the wintertime air sea flux of carbon dioxide in the northern North Atlantic, 1981 2001

    Are Olsen;Are Olsen;Richard G.J. Bellerby;Richard G.J. Bellerby;Truls Johannessen;Truls Johannessen;Abdirahman M. Omar;Abdirahman M. Omar

  • Air-Sea Interactions of Natural Long-Lived Greenhouse Gases (CO2, N2O, CH4) in a Changing Climate

    Dorothee C. E. Bakker;Hermann W. Bange;Nicolas Gruber;Truls Johannessen

  • Arctic Ocean CO2 uptake: An improved multiyear estimate of the air-sea CO2 flux incorporating chlorophyll a concentrations

    Sayaka Yasunaka;Eko Siswanto;Are Olsen;Mario Hoppema

  • Seasonal and interannual variability of the air-sea CO2 flux in the Atlantic sector of the Barents Sea

    Abdirahman M. Omar;Abdirahman M. Omar;Truls Johannessen;Truls Johannessen;Are Olsen;Are Olsen;Staffan Kaltin

  • Reconstructing the time history of the air-sea CO2 disequilibrium and its rate of change in the eastern subpolar North Atlantic, 1972–1989

    Abdirahman M. Omar;Abdirahman M. Omar;Are Olsen;Are Olsen

  • Spatiotemporal variations of fCO 2 in the North Sea

    A. M. Omar;A. M. Omar;A. Olsen;A. Olsen;T. Johannessen;T. Johannessen;M. Hoppema

  • The Nordic Seas carbon budget: Sources, sinks, and uncertainties

    Emil Jeansson;Are Olsen;Tor Eldevik;Tor Eldevik;Ingunn Skjelvan;Ingunn Skjelvan

  • A Surface Ocean CO2 Reference Network, SOCONET and Associated Marine Boundary Layer CO2 Measurements

    Rik H. Wanninkhof;Penelope Pickers;Abdirahman M. Omar;Adrienne J. Sutton

  • Winter weather controls net influx of atmospheric CO2 on the north-west European shelf

    Vassilis Kitidis;Jamie D. Shutler;Ian Ashton;Mark Warren

  • Spatiotemporal variations of fCO2 in the North Sea

    A. M. Omar;A. Olsen;T. Johannessen;A. Borges

  • Arctic Ocean CO2 uptake: an improved multi-year estimate of the air-sea CO2 flux incorporating chlorophyll-a concentrations

    S. Yasunaka;E. Siswanto;A. Olsen;Mario Hoppema

Frequent Co-Authors

Truls Johannessen
Truls Johannessen University of Bergen
Are Olsen
Are Olsen University of Bergen
Bronte Tilbrook
Bronte Tilbrook CSIRO Marine and Atmospheric Research
Richard G. J. Bellerby
Richard G. J. Bellerby East China Normal University
Arne Körtzinger
Arne Körtzinger GEOMAR Helmholtz Centre for Ocean Research Kiel
Mario Hoppema
Mario Hoppema Alfred Wegener Institute for Polar and Marine Research
Taro Takahashi
Taro Takahashi Lamont-Doherty Earth Observatory
Melissa Chierici
Melissa Chierici University Centre in Svalbard
Simone R. Alin
Simone R. Alin National Oceanic and Atmospheric Administration
Richard A. Feely
Richard A. Feely University of Washington

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