World's Best Scientists 2026 revealed!
Topi Rönkkö

Topi Rönkkö

D-Index & Metrics

Environmental Sciences

D-Index
51
Citations
7623
World Ranking
4824
National Ranking
77

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.

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: 283 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: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 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 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 215 publications — 69th percentile

69% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

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.

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: 199 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: 19 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: 99 scientists
30 D-Index 125+

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 125 D-Index or more.

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

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