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  • Technical note: Frenkel, Halsey and Hill analysis of water on clay minerals: toward closure between cloud condensation nuclei activity and water adsorption
Title: Technical note: Frenkel, Halsey and Hill analysis of water on clay minerals: toward closure between cloud condensation nuclei activity and water adsorption
Abstract. Insoluble atmospheric aerosol, such as mineral dust, hasbeen identified as an important contributor to the cloud droplet numberconcentration and indirect climate effect. However, empirically derivedFrenkel–Halsey–Hill (FHH) water adsorption parameters remain the largestsource of uncertainty in assessing the effect of insoluble aerosol onclimate using the FHH activation theory (FHH-AT). Furthermore, previouslyreported FHH water adsorption parameters for illite and montmorillonitedetermined from water adsorption measurements below 100 % RH do notsatisfactorily agree with values determined from FHH-AT analysis ofexperimental cloud condensation nuclei (CCN) measurements undersupersaturated conditions. The work reported here uses previously reportedexperimental water adsorption measurements for illite and montmorilloniteclays (Hatch et al., 2012, 2014) to show that improvedanalysis methods that account for the surface microstructure are necessaryto obtain better agreement of FHH parameters between water adsorption andexperimental CCN-derived FHH parameters.  more » « less
Award ID(s):
1755606
PAR ID:
10174203
Author(s) / Creator(s):
; ; ; ; ;
Date Published:
Journal Name:
Atmospheric Chemistry and Physics
Volume:
19
Issue:
21
ISSN:
1680-7324
Page Range / eLocation ID:
13581 to 13589
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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