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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 64 2336 2230 936 867 181 14095

Ru-Shan Gao publications per year

The chart shows the history of publications by Ru-Shan Gao between 1994 and 2021, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ru-Shan Gao published across 28 years, from 1994 to 2021, averaging 6.4 papers a year. Output peaked at 12 publications in 2010. 13 of the 179 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1994 to 2021. Vertical axis: number of publications, 0 to 12. Peak 12 publications in 2010. 1994: 7 publications 1995: 2 publications 1996: 5 publications 1997: 6 publications 1998: 2 publications 1999: 10 publications 2000: 3 publications 2001: 8 publications 2002: 9 publications 2003: 1 publication 2004: 6 publications 2005: 3 publications 2006: 3 publications 2007: 7 publications 2008: 6 publications 2009: 6 publications 2010: 12 publications 2011: 11 publications 2012: 8 publications 2013: 7 publications 2014: 7 publications 2015: 9 publications 2016: 12 publications 2017: 7 publications 2018: 4 publications 2019: 5 publications 2020: 9 publications 2021: 4 publications
1994 2021

179 publications in total across all disciplines

View publications per year as a table
Ru-Shan Gao: publications per year, 1994 to 2021
Year Publications
1994 7
1995 2
1996 5
1997 6
1998 2
1999 10
2000 3
2001 8
2002 9
2003 1
2004 6
2005 3
2006 3
2007 7
2008 6
2009 6
2010 12
2011 11
2012 8
2013 7
2014 7
2015 9
2016 12
2017 7
2018 4
2019 5
2020 9
2021 4
Total 179
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Ru-Shan Gao 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 Ru-Shan Gao 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, 181–190 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: 181 publications — 57th percentile

57% 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
181–190 400 181
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
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Ru-Shan Gao 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 Ru-Shan Gao 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, 64 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: 64 D-Index — 77th percentile

77% 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 64
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
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Overview

What is he best known for?

The fields of study he is best known for:

  • Quantum mechanics
  • Meteorology
  • Organic chemistry

Ru-Shan Gao mainly focuses on Environmental science, Atmospheric sciences, Aerosol, Soot and Stratosphere. Environmental science is connected with Meteorology, Climatology, Troposphere, Ozone and Arctic in his research. His studies deal with areas such as Snow and Humidity as well as Atmospheric sciences.

In his work, Atmosphere, Forcing and Mie scattering is strongly intertwined with Absorption, which is a subfield of Aerosol. His Soot study combines topics in areas such as Particle and Photometer. His Stratosphere research is multidisciplinary, incorporating elements of Southern Hemisphere, Mixing and Mixing ratio.

His most cited work include:

  • Single‐particle measurements of midlatitude black carbon and light‐scattering aerosols from the boundary layer to the lower stratosphere (458 citations)
  • Increasing springtime ozone mixing ratios in the free troposphere over western North America (294 citations)
  • Removal of Stratospheric O3 by Radicals: In Situ Measurements of OH, HO2, NO, NO2, ClO, and BrO (286 citations)

What are the main themes of his work throughout his whole career to date?

The scientist’s investigation covers issues in Atmospheric sciences, Environmental science, Stratosphere, Aerosol and Troposphere. His biological study spans a wide range of topics, including Absorption and Water vapor. Environmental science is integrated with Climatology, Meteorology, Mixing ratio, Arctic and Atmosphere in his research.

His work deals with themes such as Ozone, Atmospheric chemistry, Middle latitudes and Polar, which intersect with Stratosphere. The concepts of his Aerosol study are interwoven with issues in Soot, Particle, Plume and Remote sensing. He has researched Troposphere in several fields, including TRACER, Trace gas, Chemical ionization and Mass spectrometry.

He most often published in these fields:

  • Atmospheric sciences (61.45%)
  • Environmental science (60.24%)
  • Stratosphere (45.78%)

What were the highlights of his more recent work (between 2015-2021)?

  • Environmental science (60.24%)
  • Atmospheric sciences (61.45%)
  • Aerosol (28.92%)

In recent papers he was focusing on the following fields of study:

Ru-Shan Gao focuses on Environmental science, Atmospheric sciences, Aerosol, Troposphere and Remote sensing. His Atmospheric sciences research includes themes of Water vapor and Bromine. He has included themes like Soot, Particle, Spectrometer and Sulfate in his Aerosol study.

His studies in Troposphere integrate themes in fields like Iodine and Ozone depletion. His work carried out in the field of Stratosphere brings together such families of science as Albedo, Smoke, Smoke plume and Total organic carbon. The various areas that Ru-Shan Gao examines in his Meteorology study include Radiative transfer and Near-infrared spectroscopy.

Between 2015 and 2021, his most popular works were:

  • Efficient transport of tropospheric aerosol into the stratosphere via the Asian summer monsoon anticyclone. (53 citations)
  • Black carbon lofts wildfire smoke high into the stratosphere to form a persistent plume. (49 citations)
  • A light-weight, high-sensitivity particle spectrometer for PM2.5 aerosol measurements (36 citations)

In his most recent research, the most cited papers focused on:

  • Quantum mechanics
  • Meteorology
  • Organic chemistry

His primary areas of investigation include Atmospheric sciences, Environmental science, Stratosphere, Aerosol and Troposphere. His Atmospheric sciences research integrates issues from Smoke and Nucleation. His Stratosphere study is focused on Climatology in general.

Ru-Shan Gao combines subjects such as Mixing ratio and Upwelling with his study of Climatology. His Aerosol study combines topics from a wide range of disciplines, such as Spectrometer and Laser. His research in Troposphere intersects with topics in Atmosphere and Remote sensing.

Best Publications

  • Single‐particle measurements of midlatitude black carbon and light‐scattering aerosols from the boundary layer to the lower stratosphere

    J. P. Schwarz;J. P. Schwarz;R. S. Gao;D. W. Fahey;D. W. Fahey;D. S. Thomson;D. S. Thomson

  • Measurement of the mixing state, mass, and optical size of individual black carbon particles in urban and biomass burning emissions

    J. P. Schwarz;J. P. Schwarz;R. S. Gao;J. R. Spackman;J. R. Spackman;L. A. Watts;L. A. Watts

  • Increasing springtime ozone mixing ratios in the free troposphere over western North America

    O. R. Cooper;O. R. Cooper;D. D. Parrish;A. Stohl;M. Trainer

  • Removal of Stratospheric O3 by Radicals: In Situ Measurements of OH, HO2, NO, NO2, ClO, and BrO

    P. O. Wennberg;R. C. Cohen;R. M. Stimpfle;J. P. Koplow

  • The detection of large HNO3-containing particles in the winter Arctic stratosphere.

    D. W. Fahey;R. S. Gao;K. S. Carslaw;J. Kettleborough

  • Black carbon lofts wildfire smoke high into the stratosphere to form a persistent plume.

    Pengfei Yu;Pengfei Yu;Pengfei Yu;Owen B. Toon;Charles G. Bardeen;Yunqian Zhu

  • Coatings and their enhancement of black carbon light absorption in the tropical atmosphere

    J. P. Schwarz;J. P. Schwarz;J. R. Spackman;J. R. Spackman;D. W. Fahey;D. W. Fahey;R. S. Gao

  • Long-term ozone trends at rural ozone monitoring sites across the United States, 1990-2010

    Owen R. Cooper;Owen R. Cooper;Ru-Shan Gao;David Tarasick;Thierry Leblanc

  • An Inter-Comparison of Instruments Measuring Black Carbon Content of Soot Particles

    Jay G. Slowik;Eben S. Cross;Jeong-Ho Han;Paul Davidovits

  • A Novel Method for Estimating Light-Scattering Properties of Soot Aerosols Using a Modified Single-Particle Soot Photometer

    R. S. Gao;J. P. Schwarz;K. K. Kelly;D. W. Fahey

  • Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project

    C. A. Brock;J. Cozic;J. Cozic;R. Bahreini;R. Bahreini;K. D. Froyd;K. D. Froyd

  • Validation of Aura Microwave Limb Sounder O3 and CO observations in the upper troposphere and lower stratosphere

    N. J. Livesey;Mark Filipiak;L. Froidevaux;W. G. Read

  • The photochemistry of acetone in the upper troposphere: A source of odd-hydrogen radicals

    S. A. McKeen;T. Gierczak;J. B. Burkholder;P. O. Wennberg

  • Global-scale black carbon profiles observed in the remote atmosphere and compared to models

    J. P. Schwarz;J. P. Schwarz;J. R. Spackman;J. R. Spackman;R. S. Gao;L. A. Watts;L. A. Watts

  • Emission Measurements of the Concorde Supersonic Aircraft in the Lower Stratosphere

    D. W. Fahey;E. R. Keim;K. A. Boering;C. A. Brock

  • Mixing of polar vortex air into middle latitudes as revealed by tracer-tracer scatterplots

    Darryn Waugh;R A Plumb;J W Elkins;D W Fahey

  • A light-weight, high-sensitivity particle spectrometer for PM2.5 aerosol measurements

    R. S. Gao;H. Telg;R. J. McLaughlin;S. J. Ciciora

  • Efficient transport of tropospheric aerosol into the stratosphere via the Asian summer monsoon anticyclone.

    Pengfei Yu;Karen H. Rosenlof;Shang Liu;Shang Liu;Shang Liu;Hagen Telg;Hagen Telg

  • The Detection Efficiency of the Single Particle Soot Photometer

    J. P. Schwarz;J. R. Spackman;R. S. Gao;A. E. Perring

  • Ice nucleation and dehydration in the Tropical Tropopause Layer

    Eric J. Jensen;Glenn Diskin;R. Paul Lawson;Sara Lance

  • Black carbon aerosol size in snow

    J. P. Schwarz;J. P. Schwarz;R. S. Gao;A. E. Perring;A. E. Perring;J. R. Spackman

Frequent Co-Authors

David W. Fahey
David W. Fahey National Oceanic and Atmospheric Administration
Joshua P. Schwarz
Joshua P. Schwarz National Oceanic and Atmospheric Administration
Troy Thornberry
Troy Thornberry National Oceanic and Atmospheric Administration
Anne E. Perring
Anne E. Perring Colgate University
Ross J. Salawitch
Ross J. Salawitch University of Maryland, College Park
Max Loewenstein
Max Loewenstein Ames Research Center
Eric J. Hintsa
Eric J. Hintsa Cooperative Institute for Research in Environmental Sciences
Jeff Peischl
Jeff Peischl Cooperative Institute for Research in Environmental Sciences
Darrel Baumgardner
Darrel Baumgardner National Autonomous University of Mexico
Karen H. Rosenlof
Karen H. Rosenlof National Oceanic and Atmospheric Administration

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