Relative contribution of submicron and supermicron particles to aerosol light scattering in the marine boundary layer
article
Measurements of the aerosol light scattering coefficient (σsp) at a wavelength of λ - 550 nm were conducted at a coastal atmospheric research station in the east Atlantic Ocean during June 1999. Size distribution measurements between diameters of 3 nm and 40 um (at ambient humidity) were used to derive scattering coefficients from Mie theory. The calculated scattering coefficients were about a factor of 7.4 higher than the measured scattering coefficients. The discrepancy was explained by a reduced cutoff of the sampling system at particle diameters between 6 and 8 μm, dependent on wind speed. The calculated aerosol scattering was about 1 order of magnitude higher than previously reported measurements in the MBL and is attributed to supermicrometer particles at sizes d > 10 μm dominating aerosol scattering. Copyright 2002 by the American Geophysical Union.
Topics
TNO Identifier
95505
Source
Journal of Geophysical Research D: Atmospheres, 107(19), pp. 8-1/8-13.
Pages
8-1/8-13
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