the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
In situ formation and spatial variability of particle number concentration in a European megacity
M. Pikridas
J. Sciare
F. Freutel
S. Crumeyrolle
S.-L. von der Weiden-Reinmüller
A. Borbon
A. Schwarzenboeck
M. Merkel
M. Crippa
E. Kostenidou
M. Psichoudaki
L. Hildebrandt
G. J. Engelhart
T. Petäjä
A. S. H. Prévôt
F. Drewnick
U. Baltensperger
A. Wiedensohler
M. Kulmala
M. Beekmann
S. N. Pandis
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We present a novel version of an aerosol number size distribution instrument, showcasing its capability to measure particle number concentration and particle number size distribution between 1 and 12 nm. Our results show that the instrument agrees well with existing instrumentation and allows for both the accurate measurement of the smallest particles and overlap with more conventional aerosol number size distribution instruments.
chemical regimeof PM sensitivity to ammonia and nitric acid availability.
coatingmade of hydrophilic material during atmospheric aging. The predictability of this process using theory was successfully tested.
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Clouds over the Southern Ocean are crucial to Earth's energy balance, but understanding the factors that control them is complex. Our research examines how weather patterns affect tiny particles called cloud condensation nuclei (CCN), which influence cloud properties. Using data from Kennaook / Cape Grim, we found that winter air from Antarctica brings cleaner conditions with lower CCN, while summer patterns from Australia transport more particles. Precipitation also helps reduce CCN in winter.