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Hanna Vehkamäki

Hanna Vehkamäki

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 71 5485 4980 24 20 313 19843

Hanna Vehkamäki publications per year

The chart shows the history of publications by Hanna Vehkamäki between 1994 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hanna Vehkamäki published across 32 years, from 1994 to 2025, averaging 12.3 papers a year. Output peaked at 39 publications in 2006. 18 of the 394 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1994 to 2025. Vertical axis: number of publications, 0 to 39. Peak 39 publications in 2006. 1994: 1 publication 1995: 2 publications 1996: 0 publications 1997: 0 publications 1998: 0 publications 1999: 2 publications 2000: 5 publications 2001: 5 publications 2002: 5 publications 2003: 7 publications 2004: 18 publications 2005: 9 publications 2006: 39 publications 2007: 33 publications 2008: 14 publications 2009: 20 publications 2010: 20 publications 2011: 18 publications 2012: 15 publications 2013: 35 publications 2014: 14 publications 2015: 9 publications 2016: 16 publications 2017: 8 publications 2018: 8 publications 2019: 14 publications 2020: 20 publications 2021: 12 publications 2022: 10 publications 2023: 17 publications 2024: 6 publications 2025: 12 publications
1994 2025

394 publications in total across all disciplines

View publications per year as a table
Hanna Vehkamäki: publications per year, 1994 to 2025
Year Publications
1994 1
1995 2
1996 0
1997 0
1998 0
1999 2
2000 5
2001 5
2002 5
2003 7
2004 18
2005 9
2006 39
2007 33
2008 14
2009 20
2010 20
2011 18
2012 15
2013 35
2014 14
2015 9
2016 16
2017 8
2018 8
2019 14
2020 20
2021 12
2022 10
2023 17
2024 6
2025 12
Total 394
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Hanna Vehkamäki publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Hanna Vehkamäki sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 301–320 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 313 publications — 66th percentile

66% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764 313
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Hanna Vehkamäki D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Hanna Vehkamäki sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 70–71 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 71 D-Index — 70th percentile

70% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646 71
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Hanna Vehkamäki is affiliated with the University of Helsinki in Finland. Their research primarily focuses on Earth and Planetary Sciences with a significant corpus of work in Atmospheric Science. The scientist's contributions span several subfields including Spectroscopy, Atomic and Molecular Physics and Optics, Global and Planetary Change, and Biomedical Engineering.

Their work addresses key topics such as:

  • Atmospheric chemistry and aerosols
  • Atmospheric Ozone and Climate
  • Nanoparticles nucleation surface interactions
  • Atmospheric aerosols and clouds
  • Advanced Chemical Physics Studies
  • Mass Spectrometry Techniques and Applications
  • Advanced Chemical Sensor Technologies

Recent papers authored or co-authored by Vehkamäki include:

  • "Modeling the formation and growth of atmospheric molecular clusters: A review," published in 2020 in the Journal of Aerosol Science
  • "Quantum chemical studies of hydrate formation of H2SO4 and HSO4," published in 2024 in Helda (University of Helsinki)
  • "Atmospheric Sulfuric Acid-Dimethylamine Nucleation Enhanced by Trifluoroacetic Acid," published in 2020 in Geophysical Research Letters
  • "Structural Effects of Amines in Enhancing Methanesulfonic Acid-Driven New Particle Formation," published in 2020 in Environmental Science & Technology
  • "Impact of Quantum Chemistry Parameter Choices and Cluster Distribution Model Settings on Modeled Atmospheric Particle Formation Rates," published in 2020 in The Journal of Physical Chemistry A

Frequent co-authors in their research activities include:

  • Theo Kurtén
  • Jakub Kubečka
  • Bernhard Reischl
  • Juha Kangasluoma
  • Markku Kulmala

Their publications appear regularly in the following venues:

  • The Journal of Physical Chemistry A
  • Helda (University of Helsinki)
  • Atmospheric Chemistry and Physics
  • Journal of Aerosol Science
  • Physical Chemistry Chemical Physics

Best Publications

  • Formation and growth rates of ultrafine atmospheric particles: a review of observations

    M Kulmala;Hanna Tuula Katariina Vehkamäki;Tuukka Petäjä;M Dal Maso

  • Direct observations of atmospheric aerosol nucleation.

    Markku Kulmala;Jenni Kontkanen;Heikki Junninen;Katrianne Lehtipalo

  • Molecular understanding of sulphuric acid-amine particle nucleation in the atmosphere

    Joao Almeida;Joao Almeida;Siegfried Schobesberger;Andreas Kürten;Ismael K. Ortega

  • An improved parameterization for sulfuric acid-water nucleation rates for tropospheric and stratospheric conditions

    Hanna Tuula Katariina Vehkamäki;M Kulmala;I Napari;K E J Lehtinen

  • Amines are likely to enhance neutral and ion-induced sulfuric acid-water nucleation in the atmosphere more effectively than ammonia

    Theo Kurten;Ville Loukonen;Hanna Vehkamäki;Markku Kulmala

  • Molecular understanding of atmospheric particle formation from sulfuric acid and large oxidized organic molecules

    Siegfried Schobesberger;Heikki Junninen;Federico Bianchi;Gustaf Lönn

  • Classical nucleation theory in multicomponent systems

    Hanna Vehkamäki

  • Molecular-scale evidence of aerosol particle formation via sequential addition of HIO3.

    Mikko Sipilä;Nina Sarnela;Tuija Jokinen;Henning Henschel

  • Atmospheric Cluster Dynamics Code: a flexible method for solution of the birth-death equations

    Matthew Joseph Mcgrath;Matthew Joseph Mcgrath;T. Olenius;I. K. Ortega;V. Loukonen

  • From quantum chemical formation free energies to evaporation rates

    I. K. Ortega;O. Kupiainen;T. Kurtén;T. Olenius

  • Heterogeneous nucleation experiments bridging the scale from molecular ion clusters to nanoparticles.

    Paul M. Winkler;Gerhard Steiner;Aron Vrtala;Hanna Vehkamäki

  • Enhancing effect of dimethylamine in sulfuric acid nucleation in the presence of water – a computational study

    V. Loukonen;T. Kurtén;I. K. Ortega;H. Vehkamäki

  • Parametrization of ternary nucleation rates for H2SO4-NH3-H2O vapors

    I. Napari;M. Noppel;M. Noppel;H. Vehkamäki;M. Kulmala

  • Free energy barrier in the growth of sulfuric acid–ammonia and sulfuric acid–dimethylamine clusters

    T. Olenius;O. Kupiainen-Määttä;I. K. Ortega;Theo Kurtén

  • Composition and temporal behavior of ambient ions in the boreal forest

    M. Ehn;H. Junninen;Tuukka Petaja;T. Kurten

  • Ultrafine particle scavenging coefficients calculated from 6 years field measurements

    Lauri Laakso;Tiia Grönholm;Üllar Rannik;Miriam Kosmale;Miriam Kosmale

  • The role of highly oxygenated organic molecules in the Boreal aerosol-cloud-climate system

    Pontus Roldin;Mikael Ehn;Theo Kurtén;Tinja Olenius

  • Origin of the failure of classical nucleation theory: incorrect description of the smallest clusters.

    Joonas Merikanto;Evgeni Zapadinsky;Antti Lauri;Hanna Vehkamäki

  • The condensation particle counter battery (CPCB): A new tool to investigate the activation properties of nanoparticles

    Markku Kulmala;Genrik Mordas;Tuukka Petäjä;Tiia Grönholm

  • Modeling the formation and growth of atmospheric molecular clusters: A review

    Jonas Elm;Jakub Kubečka;Vitus Besel;Matias J. Jääskeläinen

  • New parameterization of sulfuric acid‐ammonia‐water ternary nucleation rates at tropospheric conditions

    J. Merikanto;I. Napari;H. Vehkamäki;T. Anttila

  • Fatty acids on continental sulfate aerosol particles

    H. Tervahattu;J. Juhanoja;V. Vaida;A. F. Tuck

Frequent Co-Authors

Markku Kulmala
Markku Kulmala University of Helsinki
Theo Kurtén
Theo Kurtén University of Helsinki
Kari E. J. Lehtinen
Kari E. J. Lehtinen University of Eastern Finland
Tuukka Petäjä
Tuukka Petäjä University of Helsinki
Ari Laaksonen
Ari Laaksonen Finnish Meteorological Institute
Ilona Riipinen
Ilona Riipinen Stockholm University
Heikki Junninen
Heikki Junninen University of Tartu
Mikael Ehn
Mikael Ehn University of Helsinki
Katrianne Lehtipalo
Katrianne Lehtipalo University of Helsinki
Douglas R. Worsnop
Douglas R. Worsnop University of Helsinki

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