Zobrazeno 1 - 10
of 53
pro vyhledávání: '"M. Väkevä"'
Publikováno v:
Atmospheric Chemistry and Physics, Vol 2, Iss 1, Pp 55-66 (2002)
An Ultrafine Tandem Differential Mobility Analyser (UF-TDMA) has been used in several field campaigns over the last few years. The investigations were focused on the origin and properties of nucleation event aerosols, which are observed frequently in
Externí odkaz:
https://doaj.org/article/95b3ac75080b422ebc478c901299d10f
Publikováno v:
Aerosol Science and Technology. 51:626-641
A solid particle number limit was applied to the European legislation for diesel vehicles in 2011. Extension to gasoline direct injection vehicles raised concerns because many studies found particles below the lower size limit of the method (23 nm).
Publikováno v:
ResearcherID
The hygroscopic growth properties of ultrafine NaCl particles between 8 and 50 nm in mobility diameter have been studied using an ultrafine tandem differential mobility analyzer. The data include determination of hygroscopic growth curves, deliquesce
Publikováno v:
ResearcherID
Richard K. Bowles
Richard K. Bowles
In this paper, we develop a thermodynamic theory for the deliquescence behavior of soluble crystals in an atmosphere of solvent vapor. In this endeavor, we have focused on studying possible free energy barriers that could impede deliquescence. Our ai
Publikováno v:
ResearcherID
An ultrafine tandem differential mobility analyzer has been developed for measurements of the hygroscopicity of ultrafine aerosol particles, between 8 and 50 nm in mobility diameter. In this paper, the main operation features of the device are presen
Publikováno v:
Journal of Geophysical Research: Atmospheres. 105:9807-9821
A 3 week measurement campaign was undertaken to study the effect of local weather parameters, transportation from an urban area, structure of boundary layer, and precipitation on submicron (8–450 nm in mobility diameter) aerosol particles in urban
Publikováno v:
Atmospheric Environment. 33:1385-1397
Gaseous air pollutants and aerosol particle concentrations were monitored in an urban street canyon for two weeks. The measurements were performed simultaneously at two different heights: at street level (gases 3 m, aerosol particles 1.5 m) and at a
Autor:
Christoph Kleefeld, Gerrit de Leeuw, Michael Geever, Colin D. O'Dowd, Markku Kulmala, Edo Becker, Andrew G. Allen, Kaarle Hämeri, Roy M. Harrison, Jyrki M. Mäkelä, Hans-Christen Hansson, Gerard J. Kunz, M. Väkevä, Pasi Aalto, Harald Berresheim, S. Gerard Jennings
Publikováno v:
Journal of Geophysical Research. 107
Nucleation mode aerosol was characterized during coastal nucleation events at Mace Head during intensive New Particle Formation and Fate in the Coastal Environment (PARFORCE) field campaigns in September 1998 and June 1999. Nucleation events were obs
Autor:
Hans Karlsson, Hans-Christen Hansson, Ismo K. Koponen, E. D. O. Becker, G. Buzorius, Pasi Aalto, Rodney J. Weber, J. Salm, Kaarle Hämeri, M. Väkevä, Claudia Hoell, Markku Kulmala, Jyrki M. Mäkelä, Colin D. O'Dowd
Publikováno v:
Tellus B; Vol 53, No 4 (2001)
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, Finla
Autor:
Kaarle Hämeri, M. Väkevä
Publikováno v:
AIP Conference Proceedings.
The hygroscopic properties of recently produced ultrafine particles were measured in forestal and coastal environments using an Ultrafine Tandem Differential Mobility Analyser. The size range of the ambient aerosol particles that was investigated ran