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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 68 1130 1001 517 443 474 18209

C. K. Shum publications per year

The chart shows the history of publications by C. K. Shum between 1982 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. C. K. Shum published across 44 years, from 1982 to 2025, averaging 12.7 papers a year. Output peaked at 30 publications in 2010. 43 of the 560 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1982 to 2025. Vertical axis: number of publications, 0 to 30. Peak 30 publications in 2010. 1982: 3 publications 1983: 0 publications 1984: 0 publications 1985: 2 publications 1986: 1 publication 1987: 1 publication 1988: 5 publications 1989: 6 publications 1990: 8 publications 1991: 2 publications 1992: 4 publications 1993: 1 publication 1994: 9 publications 1995: 1 publication 1996: 6 publications 1997: 6 publications 1998: 1 publication 1999: 1 publication 2000: 8 publications 2001: 8 publications 2002: 16 publications 2003: 15 publications 2004: 20 publications 2005: 24 publications 2006: 18 publications 2007: 5 publications 2008: 19 publications 2009: 19 publications 2010: 30 publications 2011: 22 publications 2012: 18 publications 2013: 27 publications 2014: 22 publications 2015: 20 publications 2016: 23 publications 2017: 21 publications 2018: 24 publications 2019: 18 publications 2020: 26 publications 2021: 14 publications 2022: 23 publications 2023: 20 publications 2024: 20 publications 2025: 23 publications
1982 2025

560 publications in total across all disciplines

View publications per year as a table
C. K. Shum: publications per year, 1982 to 2025
Year Publications
1982 3
1983 0
1984 0
1985 2
1986 1
1987 1
1988 5
1989 6
1990 8
1991 2
1992 4
1993 1
1994 9
1995 1
1996 6
1997 6
1998 1
1999 1
2000 8
2001 8
2002 16
2003 15
2004 20
2005 24
2006 18
2007 5
2008 19
2009 19
2010 30
2011 22
2012 18
2013 27
2014 22
2015 20
2016 23
2017 21
2018 24
2019 18
2020 26
2021 14
2022 23
2023 20
2024 20
2025 23
Total 560
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C. K. Shum 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 C. K. Shum 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, 468–477 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: 474 publications — 97th percentile

97% 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
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 30 474
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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C. K. Shum 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 C. K. Shum 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, 68 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: 68 D-Index — 88th percentile

88% 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
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 68
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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Research.com Recognitions

  • 2011 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

C. K. Shum is affiliated with The Ohio State University in the United States. Their research spans multiple areas within Earth and Planetary Sciences, with a substantial focus on Environmental Science. The main fields of study include:

  • Earth and Planetary Sciences
  • Environmental Science

The subfields of study that Shum contributes to cover various disciplines such as:

  • Oceanography
  • Atmospheric Science
  • Global and Planetary Change
  • Aerospace Engineering
  • Geophysics

The primary topics of research encompass:

  • Geophysics and Gravity Measurements
  • GNSS Positioning and Interference
  • Cryospheric Studies and Observations
  • Climate Variability and Models
  • Geology and Paleoclimatology Research
  • Geomagnetism and Paleomagnetism Studies
  • Flood Risk Assessment and Management

Among recent papers, notable works by Shum include:

  • "Response of Tibetan Plateau lakes to climate change: Trends, patterns, and mechanisms" (2020), published in Earth-Science Reviews
  • "Water level changes, subsidence, and sea level rise in the Ganges-Brahmaputra-Meghna delta" (2020), published in Proceedings of the National Academy of Sciences
  • "An Iterative ICA-Based Reconstruction Method to Produce Consistent Time-Variable Total Water Storage Fields Using GRACE and Swarm Satellite Data" (2020), published in Remote Sensing
  • "Machine learning based downscaling of GRACE-estimated groundwater in Central Valley, California" (2022), published in The Science of The Total Environment
  • "Description of the multi-approach gravity field models from Swarm GPS data" (2020), published in Earth system science data

Frequent co-authors include:

  • Wenhao Li
  • Ehsan Forootan
  • Chaoyang Zhang
  • Yu Zhang
  • Hao Ding

Shum's work is often published in venues such as:

  • Remote Sensing
  • IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
  • Journal of Geodetic Science
  • All Earth
  • Geophysical Research Letters

In 2011, Shum was recognized as a Fellow of the American Association for the Advancement of Science (AAAS).

Best Publications

  • The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2): Science requirements, concept, and implementation

    Thorsten Markus;Tom Neumann;Anthony Martino;Waleed Abdalati

  • Response of Tibetan Plateau lakes to climate change: Trends, patterns, and mechanisms

    Guoqing Zhang;Guoqing Zhang;Tandong Yao;Tandong Yao;Hongjie Xie;Kun Yang;Kun Yang

  • Accuracy assessment of global barotropic ocean tide models

    D. Stammer;R. D. Ray;Ole Baltazar Andersen;B. K. Arbic

  • The Joint Gravity Model 3

    B. D. Tapley;M. M. Watkins;M. M. Watkins;J. C. Ries;G. W. Davis;G. W. Davis

  • Global sea-level budget 1993 - present

    Anny Cazenave;Benoit Meyssignac;Michael Ablain

  • Crustal Dilatation Observed by GRACE After the 2004 Sumatra-Andaman Earthquake

    Shin-Chan Han;C. K. Shum;Michael Bevis;Chen Ji

  • Lake volume and groundwater storage variations in Tibetan Plateau's endorheic basin

    Guoqing Zhang;Guoqing Zhang;Tandong Yao;Tandong Yao;C. K. Shum;Shuang Yi

  • Regional differences of lake evolution across China during 1960s–2015 and its natural and anthropogenic causes

    Guoqing Zhang;Guoqing Zhang;Tandong Yao;Tandong Yao;Wenfeng Chen;Guoxiong Zheng

  • Accuracy assessment of recent ocean tide models

    C. K. Shum;P. L. Woodworth;O. B. Andersen;Gary D. Egbert

  • Lunar global shape and polar topography derived from Kaguya-LALT laser altimetry.

    H. Araki;S. Tazawa;H. Noda;Y. Ishihara

  • Precision orbit determination for TOPEX/POSEIDON

    B. D. Tapley;J. C. Ries;G. W. Davis;R. J. Eanes

  • Extensive and drastically different alpine lake changes on Asia's high plateaus during the past four decades

    Guoqing Zhang;Guoqing Zhang;Tandong Yao;Tandong Yao;Shilong Piao;Shilong Piao;Tobias Bolch;Tobias Bolch

  • Gravity model development for TOPEX/POSEIDON: Joint gravity models 1 and 2

    R. S. Nerem;F. J. Lerch;J. A. Marshall;E. C. Pavlis

  • Altimetry for the future: building on 25 years of progress

    Saleh Abdalla;Abdolnabi Abdeh Kolahchi;Michaël Ablain;Susheel Adusumilli

  • Non-isotropic filtering of GRACE temporal gravity for geophysical signal enhancement

    Shin-Chan Han;C. K. Shum;Christopher Jekeli;Chung-Yen Kuo

  • Groundwater Storage Changes in China from Satellite Gravity: An Overview

    Wei Feng;C. K. Shum;Min Zhong;Yun Pan

  • Time-variable aliasing effects of ocean tides, atmosphere, and continental water mass on monthly mean GRACE gravity field

    Shin-Chan Han;Christopher Jekeli;C. K. Shum

  • Understanding the global hydrological droughts of 2003?2016 and their relationships with teleconnections

    Ehsan Forootan;Ehsan Forootan;M. Khaki;M. Schumacher;V. Wulfmeyer

  • On the postprocessing removal of correlated errors in GRACE temporal gravity field solutions

    X. J. Duan;J. Y. Guo;C. K. Shum;W. van der Wal;W. van der Wal

  • Temporal variations in low degree zonal harmonics from Starlette orbit analysis

    M. K. Cheng;R. J. Eanes;C. K. Shum;B. E. Schutz

  • Determination of long-term changes in the Earth's gravity field from satellite laser ranging observations

    M. K. Cheng;C. K. Shum;B. D. Tapley

Frequent Co-Authors

Byron D Tapley
Byron D Tapley The University of Texas at Austin
Hyongki Lee
Hyongki Lee University of Houston
John C Ries
John C Ries The University of Texas at Austin
Shin-Chan Han
Shin-Chan Han The Ohio State University
Jürgen Kusche
Jürgen Kusche University of Bonn
Adrian Jäggi
Adrian Jäggi University of Bern
Cheinway Hwang
Cheinway Hwang National Yang Ming Chiao Tung University
Stéphane Calmant
Stéphane Calmant Institut de Recherche pour le Développement
Ole Baltazar Andersen
Ole Baltazar Andersen Technical University of Denmark
Christopher Jekeli
Christopher Jekeli The Ohio State University

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