Open AccessAerosol properties around marine tropical cumulus clouds
Author(s) -
Kaneyasu Naoki,
Hobbs Peter V.,
Ishizaka Yutaka,
Qian GongWang
Publication year - 2001
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2001jd900140
Subject(s) - aerosol , sulfate , atmospheric sciences , nitrate , particle (ecology) , environmental science , oceanography , meteorology , geology , chemistry , physics , organic chemistry
Airborne measurements of aerosols around convective clouds over the tropical Pacific Ocean show enhanced concentrations of small (Aitken) particles in the vicinity of some of the clouds. In the same regions there were increases in the concentrations of internally mixed particles with diameters around 0.3 μm that contained acidic sulfate. The acidic sulfate is attributed to heterogeneous oxidation of SO 2 in cloud droplets. There was also some evidence of nitrate in the internally mixed particles. The enhancement in the concentrations of ∼0.3 μm diameter particles produced smoother (i.e., more Junge‐type) particle size spectra.