Whitecaps and the marine atmosphere, report no. 6
Doyle, David M.
Doyle, David M.
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1984-06
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Report
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Doyle, D.M. 1984. Marine aerosol research in the Gulf of Alaska and on the Irish West Coast (Inishmore), U.C.G. Whitecap Report #6, University College, Galway.
Abstract
This study is concerned with the interdependence of 10m elevation wind speed, oceanic whitecap coverage and marine aerosol concentration. The field work is divided into two distinct phases. On Inishmore Co. Galway. aerosol concentrations and ambient meteorological conditions were monitored, at a coastal site, over a two year period. The station is described. The dependence of the concentration of the 'Large' and 'Giant' aerosol components of the marine atmosphere on wind speed, wind direction and other factors is discussed. The relationship of Giant maritime particles to wind speed is N(2.5+) = 5.34 x 10(3)U(1.39) The STREX experiment took place in the Gulf of Alaska, from mid-October to mid-December 1980. The influence of such factors as 10m elevation wind speed, sea-surface temperature, and atmospheric.stability on whitecap coverage and on the concomitant production of marine aerosol particles is evaluated. The degree of oceanic whitecap cover was estimated photographically. The relationship between oceanic whitecap coverage, W, and wind speed, U, is W = 6.22 x 10(-3)3U(2.21) There is an enhancement of the positive dependence of aerosol concentration upon whitecap cover with increasing droplet radius. Both the Inishmore and STREX results are compared to previously published data sets. They are also compared to each other. The results of these comparisons are, in general, quite favourable.
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Attribution-NonCommercial-NoDerivs 3.0 Ireland