2026 Liisa Pirjola: Environmental Sciences Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Environmental Sciences	62	2620	2499	37	37	193	13158

Overview

Liisa Pirjola is affiliated with Helsinki Metropolia University of Applied Sciences in Finland. Their research primarily spans the fields of Environmental Science, Earth and Planetary Sciences, and Engineering. Within these broader areas, the subfields of focus include Atmospheric Science, Health, Toxicology and Mutagenesis, Automotive Engineering, Environmental Engineering, and General Health Professions.

The main topics covered in their work involve air quality and health impacts, atmospheric chemistry and aerosols, vehicle emissions and performance, air quality monitoring and forecasting, wind and air flow studies, maritime transport emissions and efficiency, as well as hermeneutics and narrative identity.

Several recent papers illustrate the breadth of their research contributions:

"Variation of Absorption Ångström Exponent in Aerosols From Different Emission Sources," 2021, Journal of Geophysical Research Atmospheres
"Particulate emissions of a modern diesel passenger car under laboratory and real-world transient driving conditions," 2020, Environmental Pollution
"Sources of black carbon at residential and traffic environments obtained by two source apportionment methods," 2021, Atmospheric chemistry and physics
"In-depth characterization of submicron particulate matter inter-annual variations at a street canyon site in northern Europe," 2021, Atmospheric chemistry and physics
"Determinants of spatial variability of air pollutant concentrations in a street canyon network measured using a mobile laboratory and a drone," 2022, The Science of The Total Environment

The scientist frequently collaborates with several co-authors. These include Topi Rönkkö, Hilkka Timonen, Jarkko V. Niemi, Minna Aurela, and Heino Kuuluvainen.

In terms of publication venues, Liisa Pirjola has contributed to journals such as Atmospheric chemistry and physics, Boreal Environment Research Journal Archive, Zenodo (CERN European Organization for Nuclear Research), The Science of The Total Environment, and Environmental Pollution.

Best Publications

Stable sulphate clusters as a source of new atmospheric particles

Markku Kulmala;Liisa Pirjola;Jyrki M. Mäkelä

932
Citations
Marine aerosol formation from biogenic iodine emissions

Colin D. O'Dowd;Colin D. O'Dowd;Jose L. Jimenez;Richard C. Bahreini;Richard C. Flagan

911
Citations
On the formation, growth and composition of nucleation mode particles

M. Kulmala;M. Dal maso;J. M. Mäkelä;L. Pirjola

653
Citations
Parameterizations for sulfuric acid/water nucleation rates

Markka Kulmala;Ari Laaksonen;Liisa Pirjola

513
Citations
Overview of the international project on biogenic aerosol formation in the boreal forest (BIOFOR)

M. Kulmala;K. Hämeri;K. Hämeri;P. P. Aalto;J. M. Mäkelä

401
Citations
Dynamics and dispersion modelling of nanoparticles from road traffic in the urban atmospheric environment--A review

Prashant Kumar;Matthias Ketzel;Sotiris Vardoulakis;Liisa Pirjola;Liisa Pirjola

396
Citations
Nanoparticle emissions from 11 non-vehicle exhaust sources - A review

Prashant Kumar;Liisa Pirjola;Liisa Pirjola;Matthias Ketzel;Roy M. Harrison;Roy M. Harrison

378
Citations
Traffic is a major source of atmospheric nanocluster aerosol

Topi Rönkkö;Heino Kuuluvainen;Panu Karjalainen;Jorma Keskinen

288
Citations
On the photochemical production of new particles in the coastal boundary layer

Colin O'Dowd;Gordon McFiggans;David J. Creasey;Liisa Pirjola

283
Citations
Nucleation mode particles with a nonvolatile core in the exhaust of a heavy duty diesel vehicle.

Topi Rönkko;Annele Virtanen;Jonna Kannosto;Jorma Keskinen

273
Citations
FORMATION OF SULPHURIC ACID AEROSOLS AND CLOUD CONDENSATION NUCLEI: AN EXPRESSION FOR SIGNIFICANT NUCLEATION AND MODEL COMPRARISON

Liisa Pirjola;Markku Kulmala;Martin Wilck;Albrecht Bischoff

259
Citations
A dedicated study of new particle formation and fate in the coastal environment (PARFORCE): overview of objectives and achievements

Colin D. O'Dowd;Colin D. O'Dowd;Kaarle Hämeri;Kaarle Hämeri;Jyrki M. Mäkelä;Jyrki M. Mäkelä;Liisa Pirjola

251
Citations
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

232
Citations
Characteristics and source apportionment of black carbon in the Helsinki metropolitan area, Finland

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

218
Citations
Exhaust particles of modern gasoline vehicles: A laboratory and an on-road study

Panu Karjalainen;Liisa Pirjola;Juha Heikkilä;Tero Lähde

217
Citations
“Sniffer”—a novel tool for chasing vehicles and measuring traffic pollutants

L. Pirjola;H. Parviainen;T. Hussein;T. Hussein;A. Valli

214
Citations
How significantly does coagulational scavenging limit atmospheric particle production

Veli-Matti Kerminen;Liisa Pirjola;Markku Kulmala

200
Citations
Model studies on ion‐induced nucleation in the atmosphere

L. Laakso;J. M. Mäkelä;J. M. Mäkelä;L. Pirjola;M. Kulmala

190
Citations
A coupled road dust and surface moisture model to predict non-exhaust road traffic induced particle emissions (NORTRIP). Part 1: Road dust loading and suspension modelling

Bruce Rolstad Denby;Ingrid Sundvor;Christer Johansson;Liisa Pirjola

185
Citations
Can new particle formation occur in the clean marine boundary layer

Liisa Pirjola;Colin D. O'Dowd;Ian M. Brooks;Markku Kulmala

165
Citations

Frequent Co-Authors

Markku Kulmala University of Helsinki

Topi Rönkkö Tampere University

Jorma Keskinen Tampere University

Risto Hillamo Finnish Meteorological Institute

Kaarle Hämeri University of Helsinki

Colin D. O'Dowd University of Galway

Tareq Hussein University of Helsinki

Sanna Saarikoski Finnish Meteorological Institute

Jaakko Kukkonen Finnish Meteorological Institute

Frank Arnold Max Planck Society

External Links

Personal website of Liisa Pirjola

If you think any of the details on this page are incorrect, let us know.

Related Online Degrees & Career Pathways

For students pursuing Environmental Sciences, exploring related online degrees can expand career opportunities and skills. Many professionals find that a best online masters in public administration complements their environmental expertise by enhancing management and policy-making abilities, which are crucial in sustainability roles.

Understanding social dynamics is also essential. An online sociology degree bachelors can provide insights into human behaviors and societal influences on the environment. This knowledge is valuable for developing community-focused environmental initiatives.

For those considering advanced education without the traditional research-heavy approach, exploring a doctorate degree online no dissertation offers the flexibility to achieve doctoral credentials while focusing on applied learning and leadership roles within environmental organizations.

Additionally, professionals interested in education and leadership can benefit from an online eds to edd bridge program. This pathway supports career advancement in academic and administrative positions, helping to influence environmental education and policy implementation.