Browsing by Subject "aerosol formation"
Now showing items 1-11 of 11
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Airborne measurements of nucleation mode particles ii: boreal forest nucleation events
(Copernicus GmbH, 2009-02-06)Airborne measurements of nucleation mode aerosol concentrations during nucleation events over the boreal forest of southern Finland are reported. Three case studies are analyzed in an attempt to characterise the spatial ... -
Atmospheric particle formation events at värriö measurement station in finnish lapland 1998-2002
(Copernicus GmbH, 2004-10-05)During the calendar years 1998 - 2002, 147 clear 8 nm diameter particle formation events have been identified at the SMEAR I station in Varrio, northern Finland. The events have been classified in detail according to the ... -
Characteristics of organic and elemental carbon in pm2.5 and pm0.25 in indoor and outdoor environments of a middle school: secondary formation of organic carbon and sources identification
(MDPI AG, 2015-03-17)Secondary organic carbon (SOC) formation and its effects on human health require better understanding in Chinese megacities characterized by a severe particulate pollution and robust economic reform. This study investigated ... -
Chemical composition and bioreactivity of pm2.5 during 2013 haze events in china
(Elsevier BV, 2016-02-01) -
Eucaari ion spectrometer measurements at 12 european sites – analysis of new particle formation events
(Copernicus GmbH, 2010-08-25)We present comprehensive results on continuous atmospheric cluster and particle measurements in the size range similar to 1-42 nm within the European Integrated project on Aerosol Cloud Climate and Air Quality interactions ... -
Iodine dioxide nucleation simulations in coastal and remote marine environments
(Wiley-Blackwell, 2009-01-27)Aerosol dynamical box model simulations of coastal new particle formation were performed in order to investigate the nucleation and growth mechanisms in this environment. In the simulations the nucleating vapor was assumed ... -
Modelling the formation of organic particles in the atmosphere
(Copernicus GmbH, 2004-07-06)Particle formation resulting from activation of inorganic stable clusters by a supersaturated organic vapour was investigated using a numerical model. The applied aerosol dynamic model included a detailed description of ... -
Nanoparticles in boreal forest and coastal environment: a comparison of observations and implications of the nucleation mechanism
(Copernicus GmbH, 2010-08-02)The detailed mechanism of secondary new particle formation in the atmosphere is still under debate. It is proposed that particle formation happens via activation of 1-2 nm atmospheric neutral molecular clusters and/or large ... -
Oxidation of so<sub>2</sub> by stabilized criegee intermediate (sci) radicals as a crucial source for atmospheric sulfuric acid concentrations
(Copernicus GmbH, 2013-04-12)The effect of increased reaction rates of stabilized Criegee intermediates (sCIs) with SO2 to produce sulfuric acid is investigated using data from two different locations, SMEAR II, Hyytiala, Finland, and Hohenpeissenberg, ... -
Statistical characteristics and predictability of particle formation events at mace head
(Wiley-Blackwell, 2006-01-01)[ 1] The seasonal characteristics of coastal nucleation events at the Mace Head Atmospheric Research Station, resulting from exposure of macroalgae to the atmosphere, were analyzed for a 2-year period from August 2002 to ... -
The composition of nucleation and aitken modes particles during coastal nucleation events: evidence for marine secondary organic contribution
(Copernicus GmbH, 2006-10-12)Newly-formed nanometer-sized particles have been observed at coastal and marine environments world wide. Organic species have so far not been detected in those newly-formed nucleation mode particles. In this study, we ...