K
Kaarle Hämeri
Researcher at University of Helsinki
Publications - 175
Citations - 11904
Kaarle Hämeri is an academic researcher from University of Helsinki. The author has contributed to research in topics: Aerosol & Particle. The author has an hindex of 58, co-authored 175 publications receiving 10969 citations. Previous affiliations of Kaarle Hämeri include University of Jordan & Finnish Institute of Occupational Health.
Papers
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Journal ArticleDOI
Marine aerosol formation from biogenic iodine emissions
Colin D. O'Dowd,Colin D. O'Dowd,Jose L. Jimenez,Richard C. Bahreini,Richard C. Flagan,John H. Seinfeld,Kaarle Hämeri,Liisa Pirjola,Markku Kulmala,S. Gerard Jennings,Thorsten Hoffmann +10 more
TL;DR: It is suggested that marine iodocarbon emissions have a potentially significant effect on global radiative forcing.
Journal ArticleDOI
On the formation, growth and composition of nucleation mode particles
Markku Kulmala,M. Dal Maso,Jyrki M. Mäkelä,Liisa Pirjola,M. Väkevä,Pasi Aalto,P. Miikkulainen,Kaarle Hämeri,Colin D. O'Dowd +8 more
TL;DR: In this article, a new analytical tool was developed to derive formation and growth properties of nucleation mode aerosols, taking advantage of only the measured aerosol particles spectral evolution as a function of time.
Journal ArticleDOI
Hygroscopic properties of submicrometer atmospheric aerosol particles measured with H-TDMA instruments in various environments—a review
Erik Swietlicki,H.-C. Hansson,Kaarle Hämeri,Birgitta Svenningsson,A. Massling,Gordon McFiggans,Peter H. McMurry,Tuukka Petäjä,Tuukka Petäjä,Peter Tunved,Martin Gysel,David Topping,Ernest Weingartner,Urs Baltensperger,Jenny Rissler,A. Wiedensohler,Markku Kulmala +16 more
TL;DR: In this article, the authors summarized the existing published H-TDMA results on the size-resolved submicrometre aerosol particle hygroscopic properties obtained from ground-based measurements at multiple marine, rural, urban and free tropospheric measurement sites.
Journal ArticleDOI
Physical characterization of aerosol particles during nucleation events
Pasi Aalto,Kaarle Hämeri,E. D. O. Becker,Rodney J. Weber,J. Salm,Jyrki M. Mäkelä,Claudia Hoell,Colin D. O'Dowd,Colin D. O'Dowd,Hans Karlsson,Hans-Christen Hansson,M. Väkevä,Ismo K. Koponen,G. Buzorius,Markku Kulmala +14 more
TL;DR: Particle concentrations and size distributions have been measured from different heights inside and above a boreal forest during three BIOFOR campaigns (14 April-22 May 1998, 27 July-21 August 1998 and 20 March-24 April 1999) in Hyytiala, Finland.
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.