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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 56 3573 3414 1362 1258 168 17133

Roya Bahreini publications per year

The chart shows the history of publications by Roya Bahreini between 1999 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Roya Bahreini published across 28 years, from 1999 to 2026, averaging 6.8 papers a year. Output peaked at 17 publications in 2011. 12 of the 191 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1999 to 2026. Vertical axis: number of publications, 0 to 17. Peak 17 publications in 2011. 1999: 1 publication 2000: 2 publications 2001: 0 publications 2002: 3 publications 2003: 8 publications 2004: 5 publications 2005: 5 publications 2006: 8 publications 2007: 10 publications 2008: 7 publications 2009: 14 publications 2010: 14 publications 2011: 17 publications 2012: 16 publications 2013: 9 publications 2014: 4 publications 2015: 3 publications 2016: 6 publications 2017: 5 publications 2018: 4 publications 2019: 9 publications 2020: 8 publications 2021: 9 publications 2022: 5 publications 2023: 3 publications 2024: 4 publications 2025: 10 publications 2026: 2 publications
1999 2026

191 publications in total across all disciplines

View publications per year as a table
Roya Bahreini: publications per year, 1999 to 2026
Year Publications
1999 1
2000 2
2001 0
2002 3
2003 8
2004 5
2005 5
2006 8
2007 10
2008 7
2009 14
2010 14
2011 17
2012 16
2013 9
2014 4
2015 3
2016 6
2017 5
2018 4
2019 9
2020 8
2021 9
2022 5
2023 3
2024 4
2025 10
2026 2
Total 191
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Roya Bahreini 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 Roya Bahreini 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, 161–170 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: 168 publications — 51st percentile

51% 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
161–170 444 168
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
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Roya Bahreini 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 Roya Bahreini 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, 56 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: 56 D-Index — 63rd percentile

63% 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 56
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
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Overview

Roya Bahreini is a researcher affiliated with the University of California, Riverside in the United States. Their academic work spans multiple disciplines, primarily focusing on Earth and Planetary Sciences and Environmental Science. Within these broad fields, their subfields of study include Atmospheric Science, Health, Toxicology and Mutagenesis, Automotive Engineering, Global and Planetary Change, and Environmental Engineering.

The topics covered in their research highlight several key areas: atmospheric chemistry and aerosols, air quality and health impacts, atmospheric ozone and climate, vehicle emissions and performance, atmospheric aerosols and clouds, air quality monitoring and forecasting, and toxic organic pollutants impact.

Roya Bahreini has contributed to numerous peer-reviewed publications. Some recent examples include:

  • "An evaluation of global organic aerosol schemes using airborne observations" (2020), Atmospheric Chemistry and Physics
  • "Chemical transport models often underestimate inorganic aerosol acidity in remote regions of the atmosphere" (2021), Communications Earth & Environment
  • "Chemical Structure Regulates the Formation of Secondary Organic Aerosol and Brown Carbon in Nitrate Radical Oxidation of Pyrroles and Methylpyrroles" (2022), Environmental Science & Technology
  • "Solvent effects on chemical composition and optical properties of extracted secondary brown carbon constituents" (2022), Aerosol Science and Technology
  • "Effects of driving conditions on secondary aerosol formation from a GDI vehicle using an oxidation flow reactor" (2021), Environmental Pollution

Their frequent collaborators include Ying-Hsuan Lin, Kunpeng Chen, Haofei Zhang, Raphael Mayorga, and Michael Lum.

Bahreini's work has been published primarily in the following venues:

  • ACS ES&T Air
  • Aerosol Science and Technology
  • ACS Earth and Space Chemistry
  • Environmental Science & Technology
  • Bulletin of the American Meteorological Society

Best Publications

  • Ubiquity and dominance of oxygenated species in organic aerosols in anthropogenically-influenced Northern Hemisphere midlatitudes

    Q. Zhang;Jose L. Jimenez;M. R. Canagaratna;J. D. Allan

  • Organic aerosol components observed in Northern Hemispheric datasets from Aerosol Mass Spectrometry

    N.L. Ng;M.R. Canagaratna;Q. Zhang;Q. Zhang;J.L. Jimenez

  • Evaluation of Composition-Dependent Collection Efficiencies for the Aerodyne Aerosol Mass Spectrometer using Field Data

    Ann M. Middlebrook;Roya Bahreini;Jose L. Jimenez;Manjula R. Canagaratna

  • Brown carbon and internal mixing in biomass burning particles

    Daniel A. Lack;Daniel A. Lack;Justin M. Langridge;Justin M. Langridge;Roya Bahreini;Roya Bahreini;Christopher D. Cappa

  • Review of Urban Secondary Organic Aerosol Formation from Gasoline and Diesel Motor Vehicle Emissions

    Drew R. Gentner;Shantanu H. Jathar;Timothy D. Gordon;Timothy D. Gordon;Roya Bahreini

  • Gas‐phase products and secondary aerosol yields from the ozonolysis of ten different terpenes

    Anita Lee;Allen H. Goldstein;Melita D. Keywood;Song Gao

  • Particle phase acidity and oligomer formation in secondary organic aerosol.

    Song Gao;Nga L. Ng;Melita D. Keywood;Varuntida Varutbangkul

  • Contribution of First- versus Second-Generation Products to Secondary Organic Aerosols Formed in the Oxidation of Biogenic Hydrocarbons

    Nga L. Ng;Jesse H. Kroll;Melita D. Keywood;Roya Bahreini

  • Low-Molecular-Weight and Oligomeric Components in Secondary Organic Aerosol from the Ozonolysis of Cycloalkenes and α-Pinene

    Song Gao;Melita D. Keywood;Nga L. Ng;Jason D. Surratt

  • Measurements of Secondary Organic Aerosol from Oxidation of Cycloalkenes, Terpenes, and m-Xylene Using an Aerodyne Aerosol Mass Spectrometer

    Roya Bahreini;Melita D. Keywood;Nga L. Ng;Varuntida Varutbangkul

  • Organic aerosol formation in urban and industrial plumes near Houston and Dallas, Texas

    R. Bahreini;R. Bahreini;B. Ervens;B. Ervens;A. M. Middlebrook;C. Warneke;C. Warneke

  • New particle formation from photooxidation of diiodomethane (CH2I2)

    Jose L. Jimenez;Jose L. Jimenez;Roya Bahreini;David R. Cocker;David R. Cocker;Hong Zhuang

  • Hygroscopicity of secondary organic aerosols formed by oxidation of cycloalkenes, monoterpenes, sesquiterpenes, and related compounds

    V. Varutbangkul;F. J. Brechtel;R. Bahreini;R. Bahreini;N. L. Ng

  • A volatility basis set model for summertime secondary organic aerosols over the eastern United States in 2006

    R. Ahmadov;R. Ahmadov;S. A. McKeen;S. A. McKeen;A. L. Robinson;R. Bahreini;R. Bahreini

  • Biomass burning in Siberia and Kazakhstan as an important source for haze over the Alaskan Arctic in April 2008

    C. Warneke;C. Warneke;R. Bahreini;R. Bahreini;J. Brioude;J. Brioude;C. A. Brock

  • Sources, distribution, and acidity of sulfate–ammonium aerosol in the Arctic in winter–spring

    Jenny A. Fisher;Daniel James Jacob;Qiaoqiao Wang;Roya Bahreini;Roya Bahreini

  • Exploring the vertical profile of atmospheric organic aerosol: comparing 17 aircraft field campaigns with a global model

    C. L. Heald;H. Coe;J. L. Jimenez;R. J. Weber

  • 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

  • Constraining the contribution of organic acids and AMS m/z 44 to the organic aerosol budget: On the importance of meteorology, aerosol hygroscopicity, and region

    Armin Sorooshian;Shane M. Murphy;Scott Hersey;Roya Bahreini

  • Oxalic acid in clear and cloudy atmospheres: Analysis of data from International Consortium for Atmospheric Research on Transport and Transformation 2004

    Armin Sorooshian;Varuntida Varutbangkul;Fred J. Brechtel;Barbara Ervens;Barbara Ervens

  • Ubiquity and Dominance of Oxygenated Species in Organic Aerosols in

    Q. Zhang;J. L. Jimenez;H. Coe;I. Ulbrich

Frequent Co-Authors

Ann M. Middlebrook
Ann M. Middlebrook National Oceanic and Atmospheric Administration
Carsten Warneke
Carsten Warneke National Oceanic and Atmospheric Administration
Jose L. Jimenez
Jose L. Jimenez University of Colorado Boulder
John S. Holloway
John S. Holloway National Oceanic and Atmospheric Administration
John B. Nowak
John B. Nowak Langley Research Center
Joshua P. Schwarz
Joshua P. Schwarz National Oceanic and Atmospheric Administration
Charles A. Brock
Charles A. Brock National Oceanic and Atmospheric Administration
J. A. de Gouw
J. A. de Gouw University of Colorado Boulder
John H. Seinfeld
John H. Seinfeld California Institute of Technology
Jeff Peischl
Jeff Peischl Cooperative Institute for Research in Environmental Sciences

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