Photo of Leena Järvi

Leena Järvi

  • PL 68 (Pietari Kalmin katu 5)



  • Yliopistonkatu 3, Porthania

    00100 Helsinki



Research output per year

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Personal profile

Curriculum vitae

Education: 2014 Title of Docent (in meteorology), Faculty of Science, UHEL, Finland; 2009 PhD,  2006 MSc (in meteorology), Dept. of Physics, UHEL, Finland

Current positions: 5/2018–present, Associate professor (Tenure track), Institute for Atmospheric and Earth System Research (INAR) & Helsinki Institute of Sustainability Science (HELSUS), UHEL, Finland

Career breaks: Partial parental leave (working 50%)  2-7/2019; Parental leave 9-12/2018

Previous positions: 6/2014–4/2018 University Researcher, INAR, UHEL, Finland; 9/2016 Short-term visiting professor, DipNET, Univ. of Sassari, Italy; 10/2015–2/2016  Coordinator of the Doctoral School in Natural Sciences (80% part-time), Research Services, UHEL, Finland; 11/2010–5/2014 Post-doctoral researcher, Dept. of Physics, UHEL, Finland; 11/2009–10/2010 Research associate, Dept. of Geography, King’s College London, UK; 2/2006–10/2009 Doctoral student, Dept. of Physics, UHEL, Finland; 3/2005–1/2006  Research assistant, Dept. of Physics, UHEL, Finland; 6/2004–8/2004 Research assistant, Hyytiälä Forestry Field station, UHEL, Finland

Major research funding: 2020-2023 The Academy of Finland Strategic Research Council research project (CO-CARBON, Individuals, communities and municipalities mitigating climate change by carbon smart green space) 3.55 Me (consortium PI, own contribution 688 920); 2020–2024 The Academy of Finland research project (CousCOUS, Sustainable urban development emerging from the merger of cutting edge Climate, Social and Computer Sciences),  989 863 e (consortium sub-PI, own contribution 329 845 e); 2019–2023 The Academy of Finland research project (CarboCity, Urban green space solutions in carbon neutral cities), 599 598 e (consortium PI, own contribution 299 676 e); 2019–2022 Associate professor starting package, UHEL, 160 000 e; 2017–2018 Helsinki Metropolitan Region Urban Research Program (Fine resolution air quality modelling as support of urban planning), 84 000 e (consortium PI, UHEL contribution 76 356 e); 20172021ERA-NET-COFUND project under ERA-PLANET (Smart urban solutions for air quality, disasters and city growth), 2.8 Me (UHEL contribution 152 000 e, group member); 2015–2019 H2020 project (Aerosols, Clouds and Trace Gases Research Infrastructure), PI: G. Pappalardo, 9.5 Me (UHEL contribution 383 349 e, UHEL co-PI); 2014–2017 Maj and Tor Nessling foundation research grant (Modelling of the Surface energy and water balance in high-latitude cities), 78 430 e (PI); 2011–2013 Academy of Finland post-doctoral research fellowship (Carbon dioxide, heat and water exchanges in urban climate), 239 480 e (PI), 2007–2010 Maj and Tor Nessling foundation research grant (Micrometeorology and air quality in urban areas), 51 448 e (PI); 2006–2007 Research Foundation of UHEL (Micrometeorology in urban areas), 14 800 e (PI)

Participation to other funding proposals: 2019-2023 Tiina and Antti Herlin foundation (The optimal green area solutions to maximise urban carbon stocks in present day urban planning), 2019, PI: M. Havu, 104 000 e (supervisor); 2014–2019 The Academy of Finland Centre of Excellence (From Molecular and Biological Processes to the Global Climate), PI: M. Kulmala, 5.7 Me (group member); 2014–2015 Tekes (Roadmap for Beautiful Beijing),  PI: M. Kulmala, 299 500 e (group member)

Publications and presentations: 53 peer-reviewed publications in scientific journals (Web of Science H-index = 23;  Google Scholar H-index: 26, Nov 2020). Total number of citations in Web of Science is >1490. Several oral and poster presentations at international scientific conferences.

Main scientific contribution: My area of expertise is urban meteorology using a wide range of theoretical and experimental state-of-the-art methods. I have worked with surface exchange of atmospheric pollutants, greenhouse gases, energy and water above urban areas using the eddy covariance technique. I have shown how the different surface exchanges depend on urban land cover, and how they should be parameterised in hydrological and surface urban energy balance models in urban areas. I am also one of the main developers of the Surface Urban Energy and Water balance Scheme (SUEWS). In my group we also develop and utilise large eddy simulations (LES) with particular emphasis on how it can be used to support urban planning.

Supervision of graduate students and postdoctoral researchers: 3 postdocs, 7 PhD students, 17 undergraduate students

Teaching activities (UHEL); 2020 Lecturer, Urban Climate (5 ECTS, 22 hours of lectures); 2016–2019 Lecturer, Boundary layer physics I (5 ECTS, 22 hours of lectures); 2017 Lecturer, Atmospheric and Earth Sciences Today (5 ECTS, 11 hours of lectures); 2016 Lecturer, Physics, Chemistry and Meteorology of Air pollutants (5 ECTS, 2 week intensive course, group work guidance); 2014–2015 Lecturer, Physics and theoretical physics laudatur-seminars (44 hours of lectures); 2011–2014 Lecturer, Dynamic meteorology (44 hours of lectures); 2009, Lecturer Forest micrometeorology (6 hours of lectures)

Supporting lectures on topic urban meteorology (UHEL): 2019 Introduction to Urban Studies and Planning (7 h of lectures); 2019 USP Research Methods (4 h of lectures);2018 Eddy covariance intensive course, (2 h of lectures); 2014-2018 Introduction to Modern Atmospheric Sciences course (2 h of lectures); 2013 Introduction to Atmosphere-Biosphere Studies (3 h of lectures)

Organized field courses: TTORCH Summer School 2011, Hyytiälä Forestry Field station, Finland, 27.9. - 4.10.2011

Pedagogical training: University pedagogies I, Univ. Helsinki, 10 ECTS

Organisation of scientific meetings: 2019 Main organiser, Workshop on strategies to monitor greenhouse gases in urban environments, Helsinki/Hyytiälä, Finland; 2017 Main organiser, Helsinki Metropolitan Region Urban Research Program guidance group kick-off meeting, Helsinki, Finland; 2017 Main organiser, In-situ aerosol particle flux measurements – post-processing and analysis, Hyytiälä, Finland; 2017 Main organizer, Drones in research and research infrastructures, Helsinki, Finland; 2012 Main organizer, Future plans for urban climate research in Helsinki, Finland; 2008 Main organizer, 10th Anniversary of Hyytiälä EUROFLUX workshop, Finland; 2008 Member of organization committee, New Opportunities for Finnish-Japanese cooperation in urban land-atmosphere and air quality research-seminar, Finland.

Institutional responsibilities (UHEL); 2019–present Member of Sustainability Self-Steering Committee of UNA Europa; 2019–present, Steering committee member of doctoral students (J. Sulo, M. Okuljar), INAR; 2018–2020, Deputy docent committee member; 2015–present, Steering committee member of the Master Program in Atmospheric Sciences (ATM-MP); 2015–present, Steering committee member of doctoral student (V. Vilppola), Dept. of Environmental Sciences; 2012–2020,  Equality committee member of INAR; 2012–present,  Bachelor student advisor for ~7 students; 2015present, Grading committee member of doctoral theses (H. Mäkelä, J. Patokoski, L. Ahonen, N. Sarnela); 2014–2017, Member of the Department council of the Dept. of Physics; 2012–2013, Deputy at the Department council of the Dept. of Physics

Commission of trust: 2019–present Editorial Board Member for Geoscientific Model Development;2018–present Editorial Board Member for Scientific Reports; 2018–present  Convener of session in the Urban greenhouse gas emissions at the ICOS Science Conference; 2018 Convener of session Quantification of Urban Greenhouse Gas Emissions at the 10th International Conference on Urban Climate, New York, USA; 2017–present Convener of session Interactions of air pollutants, greenhouse gases, weather and climate from local/urban to global scales at the European Conference for Applied Meteorology and Climatology; 2016–2020 Board member of IAUC (International Association for Urban Climate); 2016  External examiner for a doctoral thesis at the Department of Geography, Faculty of Social Sciences, Maynooth University, Ireland; 2017 Evaluator of doctoral thesis, Dept. of Forest Sciences, Faculty of Forestry and Agriculture, UHEL, Finland; 2015 Evaluator, National Science Centre, Poland; 2015 Referee, Joint Urban Remote Sensing Event, Switzerland; 2014, 2020, Evaluator, Research Foundation Flanders, Belgium; 2013 Member of the CLEEN strategic research agenda planning group Sustainable cities, Finland; 2008–present Reviewer for 34 manuscripts in 16 international journals       

Memberships of Scientific societies: 2014–2019 Finnish Centre of Excellence in Atmospheric Science – From Molecular and Biological Processes to the Global Climate, Finland; 2010–present, Member, American Meteorological Society (AMS); 2008–present Member, European General Assembly (EGU); 2008–2013,  Finnish Centre of Excellence in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change; 2006–present The Finnish Association for Aerosol Research (FAAR); 2006-present International Association for Urban Climate (IAUC)

Invited presentations: 2019 Observed and modelled land surface exchanges of heat and carbon dioxide in cold climate cities, SUBLIME workshop, Amsterdam, the Netherlands; 2017 Tools for modelling the bi-directional relation between urbanization and climate, Urban Climate Summer School, Bucharest, Romania; 2016 Collaborative dissemination and exploitation of research infrastructures within COOP+, AGU General Assembly, San Francisco, USA; 2016 Studying urban land surface-atmosphere interactions using state-of-the-art observations and modelling, JirLATEST joint workshop between Nanjing University and University of Helsinki, Nanjing, China; 2016 Urban eddy covariance measurements of energy, water, aerosol particles and greenhouse gases at two contrasting sites in Helsinki, Finland, Univ. of Sassari, Italy; 2016 Modeling of urban climate – from micro- to local-scale, Univ. of Sassari, Italy; 2016 CO2 emissions in urban areas, ICOS-ERIC event: Observing the Horizon, Helsinki, Finland; 2016 Urban surface-atmosphere exchange at high-latitudes, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; 2015 Surface-Atmosphere interactions in high-latitude cities – from micro- to city-scale, Seminars of the Finnish Centre of Excellence, Helsinki, Finland; 2014 The surface-atmosphere exchanges in cold climate cities, Tsinghua University, Beijing, China; 2014 Impact of urban land use on air pollutant emissions, Women for Europe 5, Espoo, Finland; 2010 The exchange of carbon dioxide, heat and water in Helsinki, 1st ICOS-Finland Science Workshop, Hyytiälä, Finland.

Media coverage, interviews and articlesDifferent height trees should be planted in street canyons as it might moderate local air quality (In Finnish), Helsingin Sanomat, 4.6.2020; Referred at leading article Trees make city boulevards diverse (in Finnish) of Helsingin Sanomat 13.5.2020; Scientists claim most urban streets should be tree-free to reduce air pollution, Inews, 8.5.2020; Variance in tree species results in the cleanest urban air, ScienceDaily; The cleanest air in boulevard is obtained with changing street trees, best ones would be treeless canyons (in Finnish), YLE, 5.5.2020; In which cities it is heathiest to breathe? (in Finnish), Kauppalehti Optio, 10/2019; Healthily breathing city (in Finnish), Kaupungit ratkaisevat – Kaupunkitutkijoiden puheenvuoroja kaupungeista kestävän kehityksen edelläkävijöinä, Helsinki Symposium, 3.4.2019; Spy for city-air (in Finnish) in Helsingin Sanomat, 1.7.2018; This drone does not spy but measures air quality – the results can solve how the Helsinki City Boulevards will look (in Finnish), Helsingin Sanomat, 19.6.2017; Interviewed for article Urban stories from Helsinki (in Finnish), Yliopisto-magazine 7/2015; Article Festande invånare påverkar klimatet (in Swedish), Hufvudstadsbladet 12.5.2015; Article Vegetation rules in carbon neutral city (in Finnish), Tiede-magazine 26.10.2012.

Public outreach activities: Workshop: Climate changes everywhere and in cities (in Finnish), Researchers’ Night, 29.9.2017, Helsinki Observatory, Finland. Presentations: How RI’s can support sustainability studies in Finland, Climate University Orienteering, 21.11.2018, Helsinki, Finland;Breathing Helsinki – From street canyons over the roof level, INAR Climate Festival, 25.5.2018, Helsinki, Finland;Practical example of breathing Helsinki, Open access to information – lunch meeting for Back to the Future of School EU delegation, 1.2.2018, Helsinki, Finland; Breathing Helsinki – from wind tunnels to greenhouse gas emissions (in Finnish), Greenhouse gases, Science and Society, 27.10.2015, Helsinki, Finland; Wind, heat and carbon dioxide flowing in the city (in Finnish), A brunch & a discussion on urban climate on the roof of Torni, 11.5.2015, Helsinki, Finland; Career paths, Doctoral studies for master’s students, 13.4.2015, Helsinki, Finland; Successful interaction process: this is how we did it. BRIDGE, a joint project between University of Helsinki, City of Helsinki and EU, Network meeting for strategic research 10.3.2015, Helsinki, Finland; Participant in the panel discussion Indoor air of polluted megacity at the Indoor Air Quality days, 13.3.2014, Helsinki, Finland; Vegetation as the lungs of the urban atmosphere (in Finnish), University of Helsinki Think Corner, 26.6.2013, Helsinki, Finland; Aerosol particles and climate, Science journalist lunch in the 8th Conference of the Science Journalists, 25.6.2013, Helsinki, Finland; Urban climate and air pollutants (in Finnish), ‘Basics of Meteorology’ course directed for high-school teachers, 28.11.2012; Urban climate of Helsinki – how do we affect the surrounding air (in Finnish), University of Helsinki Think Corner, 19.6.2012, Helsinki, Finland; Climate chances but how: cities and the climate system (in Finnish), Kumpula Campus Alumni-evening, 17.3.2011, Helsinki, Finland.

Fields of Science

  • 114 Physical sciences
  • Micrometeorology
  • Urban Geography

International and National Collaboration

Publications and projects within past five years.
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