Variations in cloud condensation nuclei at palmer station antarctica during february 1994

摘要: Abstract Cloud Condensation Nuclei (CCN) activity spectra and meteorological data were measured between February 12 26, 1994 at Palmer Station, Antarctica. The CCN concentrations (at ≈ 1.3% supersaturation) ranged from −3 with an average of 20 cm . lower during fog, precipitation, or fogless periods following widespread precipitation. higher observed in the vicinity virga evaporating low level clouds, as well pollution episodes. typical a marine location. spectral indicate significant change total concentration association sampling near fog-free boundary different air-masses air-parcels, including those clouds.