Cloud seeding as a technique for studying aerosol-cloud interactions in marine stratocumulus
Author
Ghate, Virendra P.
Albrecht, Bruce A.
Kollias, Pavlos
Jonsson, Haflidi H.
Breed, Daniel W.
Date
2007Metadata
Show full item recordAbstract
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.Collections
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