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Closure between aerosol particles and cloud condensation nuclei at Kaashidhoo Climate Observatory

Cantrell, Will and Shaw, Glenn and Cass, Glen R. and Chowdhury, Zohir and Hughes, Lara S. and Prather, Kimberly A. and Guazzotti, Sergio A. and Coffee, Keith R. (2001) Closure between aerosol particles and cloud condensation nuclei at Kaashidhoo Climate Observatory. Journal of Geophysical Research D, 106 (D22). pp. 28711-28718. ISSN 0148-0227. doi:10.1029/2000JD900781.

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Predicting the cloud condensation nuclei (CCN) supersaturation spectrum from aerosol properties is a fairly straightforward matter, as long as those properties are simple. During the Indian Ocean Experiment we measured CCN spectra, size-resolved aerosol chemical composition, and aerosol number distributions and attempted to reconcile them using a modified form of Köhler theory. We obtained general agreement between our measured and modeled CCN spectra. However, the agreement was not as good during a time period when organic carbon comprised a quarter of the total mass of the aerosol in the submicron size range. The modeled concentrations overpredict those actually measured during that time period. This suggests that some component, presumably organic material, can inhibit the uptake of water by the electrolytic fraction of the mass.

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Additional Information:Copyright 2001 by the American Geophysical Union. Paper number 2000JD900781. (Received June 28, 2000; revised September 22, 2000; accepted November 10, 2000.) Thanks to Barbara Trost, who took CCN and aerosol measurements at KCO in March. UAF gratefully acknowledges financial support from the National Science Foundation, grant ATM 9612889. W.C. would like to thank UAF graduate school, who supported him with a graduate thesis fellowship in 1998/1999. Caltech and Georgia Tech wish to acknowledge National Science Foundation support for this research under NSF agreement ATM-9732665 administered by the University Corporation for Atmospheric Research. University of California, Riverside, would like to acknowledge financial support from the National Science Foundation via the Center for Clouds Chemistry, and Climate (C4) at the Scripps Institution of Oceanography under grants ATM9612887 and ATM98405024.
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NSFATM 9612889
University of Alaska, FairbanksUNSPECIFIED
University Corporation for Atmospheric Research (UCAR)UNSPECIFIED
Center for Clouds Chemistry, and Climate (C4)UNSPECIFIED
Issue or Number:D22
Record Number:CaltechAUTHORS:20141027-131134911
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Official Citation:Cantrell, W., G. Shaw, G. R. Cass, Z. Chowdhury, L. S. Hughes, K. A. Prather, S. A. Guazzotti, and K. R. Coffee (2001), Closure between aerosol particles and cloud condensation nuclei at Kaashidhoo Climate Observatory, J. Geophys. Res., 106(D22), 28711–28718, doi:10.1029/2000JD900781
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50862
Deposited By: George Porter
Deposited On:27 Oct 2014 20:44
Last Modified:10 Nov 2021 19:02

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