On the Link Between Ocean Biota Emissions, Aerosol, and Maritime Clouds: Airborne, Ground, and Satellite Measurements off the Coast of California
Author
Sorooshian, Armin
Padro, Luz T.
Nenes, Athanasios
Feingold, Graham
McComiskey, Allison
Hersey, Scott P.
Gates, Harmony
Jonsson, Haflidi H.
Miller, Steven D.
Stephens, Graeme L.
Flagan, Richard C.
Seinfeld, John H.
Date
2009Metadata
Show full item recordAbstract
Surface, airborne, and satellite measurements over the eastern Pacific Ocean off the
coast of California during the period between 2005 and 2007 are used to explore the
relationship between ocean chlorophyll a, aerosol, and marine clouds. Periods of
enhanced chlorophyll a and wind speed are coincident with increases in particulate
diethylamine and methanesulfonate concentrations. The measurements indicate that
amines are a source of secondary organic aerosol in the marine atmosphere. Subsaturated
aerosol hygroscopic growth measurements indicate that the organic component during
periods of high chlorophyll a and wind speed exhibit considerable water uptake ability.
Increased average cloud condensation nucleus (CCN) activity during periods of increased
chlorophyll a levels likely results from both size distribution and aerosol composition
changes. The available data over the period of measurements indicate that the cloud
microphysical response, as represented by either cloud droplet number concentration or
cloud droplet effective radius, is likely influenced by a combination of atmospheric
dynamics and aerosol perturbations during periods of high chlorophyll a concentrations.
Description
Global Biogeochemical Cycles, Vol. 23, GB4007
The article of record as published may be located at http://dx.doi.org/10.1029/2009GB003464
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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