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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
(IN)DEPENDENCE OF AEROSOL ACTIVATION ON CLOUD POSITION
 Zíková, Naděžda ; Pokorná, Petra ; Sedlák, Pavel ; Sokol, Zbyněk ; Ždímal, Vladimír
Five in situ campaigns focused on aerosol-cloud interactions were conducted at Mount Milešovka in the Czech Republic to gain more insight into aerosol activation and its dependence on meteorological parameters, mainly vertical air velocity and position within the cloud. The activated fraction was calculated from the difference of concentrations measured behind the whole air inlet and the PM2.5 inlet. The liquid water content (LWC) was calculated from visibility, cloud base position was estimated from ceilometer data. Vertical air velocity was estimated from cloud radar. No strong dependence was found between visibility and vertical velocity, suggesting that the clouds at the station are mostly of advection or inversion origin. Both visibility and LWC depend on the position within the cloud, with the highest LWC values found when the station was between 100 and 400 m above the cloud base, independently of the actual value.
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