World's Best Scientists 2026 revealed!
Topi Rönkkö

Topi Rönkkö

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 51 4826 4621 77 77 215 7623

Topi Rönkkö publications per year

The chart shows the history of publications by Topi Rönkkö between 2004 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Topi Rönkkö published across 22 years, from 2004 to 2025, averaging 12.6 papers a year. Output peaked at 30 publications in 2025. 48 of the 277 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 2004 to 2025. Vertical axis: number of publications, 0 to 30. Peak 30 publications in 2025. 2004: 1 publication 2005: 0 publications 2006: 6 publications 2007: 4 publications 2008: 3 publications 2009: 5 publications 2010: 3 publications 2011: 1 publication 2012: 5 publications 2013: 6 publications 2014: 12 publications 2015: 13 publications 2016: 19 publications 2017: 18 publications 2018: 24 publications 2019: 21 publications 2020: 22 publications 2021: 25 publications 2022: 15 publications 2023: 26 publications 2024: 18 publications 2025: 30 publications
2004 2025

277 publications in total across all disciplines

View publications per year as a table
Topi Rönkkö: publications per year, 2004 to 2025
Year Publications
2004 1
2005 0
2006 6
2007 4
2008 3
2009 5
2010 3
2011 1
2012 5
2013 6
2014 12
2015 13
2016 19
2017 18
2018 24
2019 21
2020 22
2021 25
2022 15
2023 26
2024 18
2025 30
Total 277
Download as CSV

Topi Rönkkö 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 Topi Rönkkö 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, 211–220 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: 215 publications — 69th percentile

69% 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
191–200 377
201–210 318
211–220 282 215
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

Topi Rönkkö 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 Topi Rönkkö 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, 51 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: 51 D-Index — 52nd percentile

52% 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 51
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

Topi Rönkkö is affiliated with Tampere University in Finland, specializing in research that spans Environmental Science, Engineering, and Earth and Planetary Sciences. Their scholarly work addresses multiple subfields including Health, Toxicology and Mutagenesis, Automotive Engineering, Atmospheric Science, Environmental Engineering, and Speech and Hearing.

The primary research topics explored encompass Air Quality and Health Impacts, Vehicle Emissions and Performance, Atmospheric Chemistry and Aerosols, Air Quality Monitoring and Forecasting, Noise Effects and Management, Maritime Transport Emissions and Efficiency, and Wind and Air Flow Studies.

They have published extensively in several high-profile academic journals and publication venues, including:

  • Atmospheric chemistry and physics
  • SSRN Electronic Journal
  • Atmospheric Environment
  • The Science of The Total Environment
  • Environmental Pollution

Among the notable recent papers authored or co-authored by Topi Rönkkö are:

  • Reduction in greenhouse gas and other emissions from ship engines: Current trends and future options (2022), published in Progress in Energy and Combustion Science
  • Variation of Absorption Ångström Exponent in Aerosols From Different Emission Sources (2021), published in Journal of Geophysical Research Atmospheres
  • Spatiotemporal variation and trends in equivalent black carbon in the Helsinki metropolitan area in Finland (2021), published in Atmospheric chemistry and physics
  • Shipping Remains a Globally Significant Source of Anthropogenic PN Emissions Even after 2020 Sulfur Regulation (2020), published in Environmental Science & Technology
  • Particulate emissions of a modern diesel passenger car under laboratory and real-world transient driving conditions (2020), published in Environmental Pollution

Topi Rönkkö collaborates frequently with several co-authors, including:

  • Hilkka Timonen
  • Sanna Saarikoski
  • Minna Aurela
  • Jarkko V. Niemi
  • Laura Salo

The combined focus of their work integrates detailed investigations into vehicle emissions, air quality monitoring, and the environmental impacts of maritime transport. This multidisciplinary approach contributes to advancing understanding of airborne pollutants and their broader effects on health and the environment.

Best Publications

  • Traffic is a major source of atmospheric nanocluster aerosol

    Topi Rönkkö;Heino Kuuluvainen;Panu Karjalainen;Jorma Keskinen

  • Nucleation mode particles with a nonvolatile core in the exhaust of a heavy duty diesel vehicle.

    Topi Rönkko;Annele Virtanen;Jonna Kannosto;Jorma Keskinen

  • Reduction in greenhouse gas and other emissions from ship engines: Current trends and future options

    Unknown

  • Effect of dilution conditions and driving parameters on nucleation mode particles in diesel exhaust : Laboratory and on-road study

    Topi Rönkkö;Annele Virtanen;Kati Vaaraslahti;Jorma Keskinen

  • Characteristics and source apportionment of black carbon in the Helsinki metropolitan area, Finland

    Aku Helin;Jarkko V. Niemi;Aki Virkkula;Liisa Pirjola

  • Exhaust particles of modern gasoline vehicles: A laboratory and an on-road study

    Panu Karjalainen;Liisa Pirjola;Juha Heikkilä;Tero Lähde

  • Dispersion of particles and trace gases nearby a city highway: Mobile laboratory measurements in Finland

    L. Pirjola;P. Paasonen;D. Pfeiffer;T. Hussein

  • Spatial and temporal characterization of traffic emissions in urban microenvironments with a mobile laboratory

    L. Pirjola;L. Pirjola;T. Lähde;J.V. Niemi;A. Kousa

  • The formation and physical properties of the particle emissions from a natural gas engine

    Jenni Alanen;Erkka Saukko;Kati Lehtoranta;Timo Murtonen

  • Particulate Mass and Nonvolatile Particle Number Emissions from Marine Engines Using Low-Sulfur Fuels, Natural Gas, or Scrubbers

    Kati Lehtoranta;Päivi Aakko-Saksa;Timo Murtonen;Hannu Vesala

  • Can real-world diesel exhaust particle size distribution be reproduced in the laboratory? A critical review.

    Jorma Keskinen;Topi Rönkkö

  • Alzheimer's disease and alpha-synuclein pathology in the olfactory bulbs of infants, children, teens and adults ≤ 40 years in Metropolitan Mexico City. APOE4 carriers at higher risk of suicide accelerate their olfactory bulb pathology.

    Lilian Calderón-Garcidueñas;Lilian Calderón-Garcidueñas;Angélica González-Maciel;Rafael Reynoso-Robles;Randy J. Kulesza

  • Overview of Sources and Characteristics of Nanoparticles in Urban Traffic-Influenced Areas.

    Topi Rönkkö;Hilkka Timonen

  • Mobile measurements of ship emissions in two harbour areas in Finland

    L. Pirjola;L. Pirjola;A. Pajunoja;A. Pajunoja;J. Walden;J.-P. Jalkanen

  • Winter and summer time size distributions and densities of traffic-related aerosol particles at a busy highway in Helsinki

    A. Virtanen;T. Rönkkö;J. Kannosto;J. Ristimäki

  • Variation of Absorption Ångström Exponent in Aerosols From Different Emission Sources

    Aku Helin;Aki Virkkula;John Backman;Liisa Pirjola;Liisa Pirjola

  • Time-resolved characterization of primary particle emissions and secondary particle formation from a modern gasoline passenger car

    Panu Karjalainen;Hilkka Timonen;Erkka Saukko;Heino Kuuluvainen

  • Lung deposited surface area size distributions of particulate matter in different urban areas

    Heino Kuuluvainen;Topi Rönkkö;Anssi Järvinen;Sampo Saari

  • Vehicle engines produce exhaust nanoparticles even when not fueled.

    Topi Rönkkö;Liisa Pirjola;Leonidas Ntziachristos;Juha Heikkilä

  • Heavy duty diesel engine exhaust aerosol particle and ion measurements.

    Tero Lähde;Topi Rönkkö;Annele Virtanen;Tanja J. Schuck

  • First online measurements of sulfuric acid gas in modern heavy-duty diesel engine exhaust: implications for nanoparticle formation.

    Frank Arnold;L. Pirjola;L. Pirjola;T. Ronkko;U. Reichl

  • Effects of Gaseous Sulphuric Acid on Diesel Exhaust Nanoparticle Formation and Characteristics

    Topi Rönkkö;Tero Lähde;Juha Heikkilä;Liisa Pirjola

Frequent Co-Authors

Jorma Keskinen
Jorma Keskinen Tampere University
Liisa Pirjola
Liisa Pirjola Helsinki Metropolia University of Applied Sciences
Hilkka Timonen
Hilkka Timonen Finnish Meteorological Institute
Sanna Saarikoski
Sanna Saarikoski Finnish Meteorological Institute
Risto Hillamo
Risto Hillamo Finnish Meteorological Institute
Minna Aurela
Minna Aurela Finnish Meteorological Institute
Leonidas Ntziachristos
Leonidas Ntziachristos Aristotle University of Thessaloniki
Kimmo Teinilä
Kimmo Teinilä Finnish Meteorological Institute
Annele Virtanen
Annele Virtanen University of Eastern Finland
Kaarle Hämeri
Kaarle Hämeri University of Helsinki

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

For those interested in advancing their education in Environmental Sciences, exploring related online degrees can open diverse career opportunities. Programs such as a doctorate degree online no dissertation offer flexible options for busy professionals who want to deepen their expertise without the traditional research demands.

Many educators and researchers opt for an eds to edd bridge program to seamlessly transition from a master's level to a doctoral degree. This pathway enhances leadership skills and opens doors to higher academic or administrative roles within environmental disciplines.

For those passionate about social impact within environmental contexts, pursuing a fully funded dsw programs can be an excellent choice. These programs combine social work with environmental advocacy, often offering financial aid to qualified candidates.

Students beginning their academic journey can consider an online general studies bachelor degree cheap, which provides a broad foundation before specializing in environmental science or related fields. This affordable option allows flexibility in course selection and convenient access to higher education.

Best Scientists Citing Topi Rönkkö

Trending Scientists

Recently Published Articles