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Cloud seeding as a technique for studying aerosol-cloud interactions in marine stratocumulus

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Author
Ghate, Virendra P.
Albrecht, Bruce A.
Kollias, Pavlos
Jonsson, Haflidi H.
Breed, Daniel W.
Date
2007
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Abstract
Giant hygroscopic aerosols were introduced into a solid marine stratocumulus cloud (200 m thick) by burning hygroscopic flares mounted on an aircraft. The cloud microphysical response in two parallel seeding plumes was observed using an instrumented aircraft making 16 transects of the plumes. The cloud drop size distribution width increased in the plumes due to an increased number of small cloud drops (3–5 mm) on the earlier transects and a 5-fold increase in the number of large drops (20–40 mm) relative to the background cloud 30 minutes later. The cloud effective diameter increased from about 11 mm in the background to 13 mm in the plumes. Although the giant nuclei were only a small fraction of the total aerosols produced by the flares, they dominated the cloud response. The merit of the seeding approach for controlled observational studies of aerosol-cloud interactions in marine stratocumulus was demonstrated.
Description
Geophysical Research Letters, Vol. 34, L14807
 
 
The article of record as published may be located at http://dx.doi.org/10.1029/2007GL02948
 
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
URI
http://hdl.handle.net/10945/42225
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