R
Risto Hillamo
Researcher at Finnish Meteorological Institute
Publications - 284
Citations - 14902
Risto Hillamo is an academic researcher from Finnish Meteorological Institute. The author has contributed to research in topics: Aerosol & Particulates. The author has an hindex of 69, co-authored 284 publications receiving 13591 citations.
Papers
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Journal ArticleDOI
A simple procedure for correcting loading effects of aethalometer data.
Aki Virkkula,Timo Mäkelä,Risto Hillamo,Tarja Yli-Tuomi,Anne Hirsikko,Kaarle Hämeri,Ismo K. Koponen +6 more
TL;DR: A simple method for correcting for the loading effects of aethalometer data is presented, and the BC-to-V ratio remained relatively stable between consequent filter spots, which can be regarded as indirect evidence that the correction algorithm works.
Journal ArticleDOI
Organic aerosol components derived from 25 AMS data sets across Europe using a consistent ME-2 based source apportionment approach
Monica Crippa,Francesco Canonaco,V. A. Lanz,Mikko Äijälä,James Allan,Samara Carbone,Gerard Capes,Darius Ceburnis,Manuel Dall'Osto,Douglas A. Day,Peter F. DeCarlo,Peter F. DeCarlo,Mikael Ehn,Axel Eriksson,Evelyn Freney,L. Hildebrandt Ruiz,L. Hildebrandt Ruiz,Risto Hillamo,Jose L. Jimenez,Heikki Junninen,Astrid Kiendler-Scharr,A. Kortelainen,Markku Kulmala,Ari Laaksonen,Amewu A. Mensah,Amewu A. Mensah,Claudia Mohr,Claudia Mohr,Eiko Nemitz,Colin D. O'Dowd,Jurgita Ovadnevaite,Spyros N. Pandis,Tuukka Petäjä,Laurent Poulain,Sanna Saarikoski,Karine Sellegri,Erik Swietlicki,Petri Tiitta,D. R. Worsnop,Urs Baltensperger,André S. H. Prévôt +40 more
TL;DR: In this article, the authors focus on the identification of the main organic aerosol sources and define a standardized methodology to perform source apportionment using positive matrix factorization (PMF) with the multilinear engine (ME-2) on Aerodyne aerosol mass spectrometer (AMS) data.
Journal ArticleDOI
The concentrations and composition of and exposure to fine particles (PM2.5) in the Helsinki subway system
Päivi Aarnio,Tarja Yli-Tuomi,Anu Kousa,Timo Mäkelä,Anne Hirsikko,Kaarle Hämeri,Kaarle Hämeri,Mika Räisänen,Risto Hillamo,Tarja Koskentalo,Matti Jantunen +10 more
TL;DR: In this paper, the authors measured fine particulate matter (PM2.5) and particle number in the Helsinki subway system during a two-weeks measurement campaign in March 2004.
Journal ArticleDOI
On the Performance of the Berner Low Pressure Impactor
Risto Hillamo,Esko I. Kauppinen +1 more
TL;DR: In this article, a real-time impactor stage efficiency measurement system has been developed based on the use of two electrometers, one connected to the collection plate of the impactor, and the other to the backup filter.
Journal ArticleDOI
Sources of organic carbon in fine particulate matter in northern European urban air
Sanna Saarikoski,Hilkka Timonen,Karri Saarnio,Mika Aurela,Leena Järvi,Petri Keronen,V.-M. Kerminen,Risto Hillamo +7 more
TL;DR: In this paper, the sources of organic carbon (OC) were investigated in the northern European urban environment in Helsinki, Finland, using both filter (PM 1 ) and online methods.