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Advances in Meteorology
Volume 2010 (2010), Article ID 301395, 9 pages
Research Article

Ocean Emission Effects on Aerosol-Cloud Interactions: Insights from Two Case Studies

1Department of Chemical and Environmental Engineering, University of Arizona, P.O. Box 210011, Tucson, AZ 85721, USA
2Department of Atmospheric Sciences, University of Arizona, P.O. Box 210081, Tucson, AZ 85721, USA

Received 9 January 2010; Revised 28 February 2010; Accepted 24 April 2010

Academic Editor: Markus D. Petters

Copyright © 2010 Armin Sorooshian and Hanh T. Duong. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Two case studies are discussed that evaluate the effect of ocean emissions on aerosol-cloud interactions. A review of the first case study from the eastern Pacific Ocean shows that simultaneous aircraft and space-borne observations are valuable in detecting links between ocean biota emissions and marine aerosols, but that the effect of the former on cloud microphysics is less clear owing to interference from background anthropogenic pollution and the difficulty with field experiments in obtaining a wide range of aerosol conditions to robustly quantify ocean effects on aerosol-cloud interactions. To address these limitations, a second case was investigated using remote sensing data over the less polluted Southern Ocean region. The results indicate that cloud drop size is reduced more for a fixed increase in aerosol particles during periods of higher ocean chlorophyll A. Potential biases in the results owing to statistical issues in the data analysis are discussed.