Browsing by Author "Petäjä, T."
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Measurements of aerosol charging states in Helsinki, Finland
Gagné, S.; Laakso, L.; Leppä, J.; Petäjä, T.; McGrath, M.J (EGU, 2011)The charging state of aerosol populations was measured with an Ion-DMPS in Helsinki, Finland between December 2008 and February 2010. Based on the charging states, we calculated the ion-induced nucleation fraction to be ... -
Transportable aerosol characterization trailer with trace gas chemistry: design, instruments and verification
Petäjä, T.; Kerminen, V.-M.; Laakso, L.; Vakkari, V.; Pohja, T. (AAQR, 2013)The characterization of atmospheric aerosol properties and trace gas concentrations in various environments provides a basis for scientific research on the assessment of their roles in the climate system, as well as regional ...