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Observations of ultra‐fine particles above a deciduous forest in Denmark
Author(s) -
Pryor S. C.,
Barthelmie R. J.,
Prip H.,
Sørensen L. L.
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl022261
Subject(s) - beech , deciduous , ultrafine particle , particle (ecology) , chemical composition , particle size distribution , environmental science , ammonium sulfate , sulfate , particle size , environmental chemistry , atmospheric sciences , mineralogy , chemistry , materials science , physics , geology , forestry , geography , oceanography , nanotechnology , ecology , metallurgy , chromatography , organic chemistry , biology
We report physical particle size distribution and chemical composition data over a Beech forest in Denmark during May and June of 2004 with a focus on four days characterized by high concentrations of ultra‐fine particles. Highest number concentrations of sub‐30 nm particles were observed when net radiation >300 W m −2 and ambient particle surface area <100 μm 2 cm −3 . The 10–30 nm particles show growth rates of 1.5–4.5 nm hr −1 and are comprised predominantly of ammonium, sulfate and associated water.
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