World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 49 5133 4916 214 202 145 15464

Mark W. Shephard publications per year

The chart shows the history of publications by Mark W. Shephard between 1999 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Mark W. Shephard published across 28 years, from 1999 to 2026, averaging 7.4 papers a year. Output peaked at 31 publications in 2022. 20 of the 206 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1999 to 2026. Vertical axis: number of publications, 0 to 31. Peak 31 publications in 2022. 1999: 1 publication 2000: 0 publications 2001: 0 publications 2002: 1 publication 2003: 4 publications 2004: 2 publications 2005: 3 publications 2006: 6 publications 2007: 6 publications 2008: 13 publications 2009: 4 publications 2010: 3 publications 2011: 6 publications 2012: 10 publications 2013: 7 publications 2014: 7 publications 2015: 12 publications 2016: 10 publications 2017: 3 publications 2018: 4 publications 2019: 12 publications 2020: 11 publications 2021: 9 publications 2022: 31 publications 2023: 13 publications 2024: 8 publications 2025: 17 publications 2026: 3 publications
1999 2026

206 publications in total across all disciplines

View publications per year as a table
Mark W. Shephard: publications per year, 1999 to 2026
Year Publications
1999 1
2000 0
2001 0
2002 1
2003 4
2004 2
2005 3
2006 6
2007 6
2008 13
2009 4
2010 3
2011 6
2012 10
2013 7
2014 7
2015 12
2016 10
2017 3
2018 4
2019 12
2020 11
2021 9
2022 31
2023 13
2024 8
2025 17
2026 3
Total 206
Download as CSV

Mark W. Shephard 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 Mark W. Shephard 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, 141–150 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: 145 publications — 39th percentile

39% 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
141–150 541 145
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
Download as CSV

Mark W. Shephard 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 Mark W. Shephard 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, 49 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: 49 D-Index — 47th percentile

47% 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 49
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
Download as CSV

Overview

Mark W. Shephard is affiliated with Environment and Climate Change Canada. Their research mainly focuses on Earth and Planetary Sciences as well as Environmental Science. These broad areas encompass several subfields including Atmospheric Science, Global and Planetary Change, Environmental Engineering, Aerospace Engineering, and Astronomy and Astrophysics.

The scientist's work covers a variety of topics within the atmospheric and environmental domain. Key topics in their research include:

  • Atmospheric chemistry and aerosols
  • Atmospheric and Environmental Gas Dynamics
  • Planetary Science and Exploration
  • Spacecraft Design and Technology
  • Atmospheric Ozone and Climate
  • Air Quality Monitoring and Forecasting
  • Wind and Air Flow Studies

Mark W. Shephard has contributed to numerous publications, with a significant number appearing in venues such as Zenodo (CERN European Organization for Nuclear Research), Atmospheric chemistry and physics, Atmospheric measurement techniques, Environmental Research Letters, and the Journal of Geophysical Research Atmospheres.

Frequent co-authors include:

  • Jason N. S. Cole
  • Howard W. Barker
  • Zhipeng Qu
  • David P. Donovan
  • Karen Cady-Pereira

Their recent noteworthy papers are:

  • "Ammonia measurements from space with the Cross-track Infrared Sounder: characteristics and applications", 2020, Atmospheric chemistry and physics
  • "Inverse modeling of NH3 sources using CrIS remote sensing measurements", 2020, Environmental Research Letters
  • "UK Ammonia Emissions Estimated With Satellite Observations and GEOS-Chem", 2021, Journal of Geophysical Research Atmospheres
  • "10-year satellite-constrained fluxes of ammonia improve performance of chemistry transport models", 2021, Atmospheric chemistry and physics
  • "Atmospheric ammonia variability and link with particulate matter formation: a case study over the Paris area", 2020, Atmospheric chemistry and physics

Best Publications

  • Radiative forcing by long‐lived greenhouse gases: Calculations with the AER radiative transfer models

    Michael J. Iacono;Jennifer S. Delamere;Eli J. Mlawer;Mark W. Shephard

  • Atmospheric radiative transfer modeling: a summary of the AER codes

    Shepard A. Clough;Mark W. Shephard;Eli J. Mlawer;J. S. Delamere

  • The EarthCARE Satellite: The Next Step Forward in Global Measurements of Clouds, Aerosols, Precipitation, and Radiation

    A. J. Illingworth;H. W. Barker;A. Beljaars;Marie Ceccaldi

  • Tropospheric emission spectrometer: retrieval method and error analysis

    K.W. Bowman;C.D. Rodgers;S.S. Kulawik;J. Worden

  • Comparisons of Tropospheric Emission Spectrometer (TES) ozone profiles to ozonesondes: Methods and initial results

    H. M. Worden;J. A. Logan;J. R. Worden;R. Beer

  • Space-based detection of missing sulfur dioxide sources of global air pollution

    Chris A. McLinden;Vitali Fioletov;Mark W. Shephard;Nick Krotkov

  • Predicted errors of tropospheric emission spectrometer nadir retrievals from spectral window selection

    John Worden;Susan S. Kulawik;Mark W. Shephard;Shepard A. Clough

  • Tropospheric Emission Spectrometer observations of the tropospheric HDO/H2O ratio: Estimation approach and characterization

    John Worden;Kevin Bowman;David Noone;Reinhard Beer

  • Satellite monitoring of ammonia: A case study of the San Joaquin Valley

    Lieven Clarisse;Mark W. Shephard;Franck Dentener;Daniel Hurtmans

  • Cross-track Infrared Sounder (CrIS) satellite observations of tropospheric ammonia

    M. W. Shephard;K. E. Cady-Pereira

  • Constraining U.S. ammonia emissions using TES remote sensing observations and the GEOS‐Chem adjoint model

    L. Zhu;D. K. Henze;K. E. Cady-Pereira;M. W. Shephard

  • NH 3 emissions from large point sources derived from CrIS and IASI satellite observations

    Enrico Dammers;Chris A. McLinden;Debora Griffin;Mark W. Shephard

  • TES ammonia retrieval strategy and global observations of the spatial and seasonal variability of ammonia

    M.W Shephard;K.E Cady-Pereira;M. Luo;D.K Henze

  • First satellite observations of lower tropospheric ammonia and methanol

    Reinhard Beer;Mark W. Shephard;Susan S. Kulawik;Shepard A. Clough

  • The QME AERI LBLRTM: A Closure Experiment for Downwelling High Spectral Resolution Infrared Radiance

    David D. Turner;D. C. Tobin;Shepard A. Clough;Patrick D. Brown

  • Comparison of carbon monoxide measurements by TES and MOPITT: Influence of a priori data and instrument characteristics on nadir atmospheric species retrievals

    M. Luo;C. P. Rinsland;C. D. Rodgers;J. A. Logan

  • Performance of the Line-By-Line Radiative Transfer Model (LBLRTM) for temperature, water vapor, and trace gas retrievals: recent updates evaluated with IASI case studies

    M. J. Alvarado;V. H. Payne;E. J. Mlawer;G. Uymin

  • Implementation of cloud retrievals for Tropospheric Emission Spectrometer (TES) atmospheric retrievals: part 1. Description and characterization of errors on trace gas retrievals

    Susan S. Kulawik;John Worden;Annmarie Eldering;Kevin Bowman

  • Forward model and Jacobians for Tropospheric Emission Spectrometer retrievals

    S.A. Clough;M.W. Shephard;J. Worden;P.D. Brown

  • Performance of the line-by-line radiative transfer model (LBLRTM) for temperature and species retrievals: IASI case studies from JAIVEx

    M. W. Shephard;S. A. Clough;V. H. Payne;W. L. Smith;W. L. Smith

  • Ozone-CO correlations determined by the TES satellite instrument in continental outflow regions

    Lin Zhang;Daniel J. Jacob;Kevin W. Bowman;Jennifer A. Logan

  • Satellite monitoring of ammonia: A case study of the

    Lieven Clarisse;Mark W. Shephard;Frank Dentener;Daniel Hurtmans

Frequent Co-Authors

Karen Cady-Pereira
Karen Cady-Pereira Atmospheric and Environmental Research
Shepard A. Clough
Shepard A. Clough Hanscom Air Force Base
Daven K. Henze
Daven K. Henze University of Colorado Boulder
Helen M. Worden
Helen M. Worden National Center for Atmospheric Research
Susan S. Kulawik
Susan S. Kulawik Ames Research Center
Kevin W. Bowman
Kevin W. Bowman California Institute of Technology
Annmarie Eldering
Annmarie Eldering California Institute of Technology
Curtis P. Rinsland
Curtis P. Rinsland Langley Research Center
Lieven Clarisse
Lieven Clarisse Université Libre de Bruxelles
Jesse O. Bash
Jesse O. Bash Environmental Protection Agency

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

Pursuing Environmental Sciences opens doors to diverse career opportunities that intersect with technology, public policy, and social sciences. For example, Geographic Information Systems (GIS) skills are vital for analyzing environmental data. Many students explore the best gis schools to gain specialized knowledge in spatial analysis and mapping, enhancing their environmental research and planning abilities.

Leadership roles in environmental management often benefit from advanced public administration skills. Those interested may consider a one year mpa to quickly acquire expertise in policy-making, organizational governance, and sustainable development—key areas for environmental program managers.

Equally important is understanding societal impacts on the environment. Degrees like the best online bachelors in sociology programs equip students with insights into human behavior and community dynamics, complementing environmental science with a social perspective.

For those pursuing academia or high-level research, flexible advanced degrees are available. Some professionals opt for online doctoral programs without dissertation, allowing them to complete their studies while focusing on practical applications and leadership in environmental fields.

Best Scientists Citing Mark W. Shephard

Trending Scientists

Recently Published Articles