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Dissolution behavior and surface tension effects of organic compounds in nucleating cloud droplets
Author(s) -
Shulman Michelle L.,
Jacobson Michael C.,
Carlson Robert J.,
Synovec Robert E.,
Young Toby E.
Publication year - 1996
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 - 10.1029/95gl03810
Subject(s) - supersaturation , dissolution , surface tension , aqueous solution , nucleation , chemical engineering , solubility , chemistry , materials science , thermodynamics , organic chemistry , physics , engineering
Solubilities and surface tensions were measured for difunctional organic acids in various concentrations of (NH 4 ) 2 SO 4 and NH 4 HSO 4 aqueous solutions. Model results using these data indicate that the organic compounds affect cloud droplet growth by two mechanisms: by gradual dissolution in the growing droplet which affects the shape of the Köhler growth curve, and by lowering of surface tension which decreases the critical supersaturation.