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<p>Improving the United States' electromagnetic (EM) and electro-optical (EO) prediction capabilities is imperative to maintaining a tactical advantage in the operational environment. The objective of this research is to estimate aerosol effects on radiative transfer through the atmosphere, particularly the contribution due to coastal surf-generated aerosol, and will include the characterization and measurement of marine aerosols, especially in coastal regions. This research involves analysis of the aerosol data, specifically the total extinction coefficient, collected during CASPER (Coupled Air Sea Processes and Electromagnetic Ducting Research)-East from various sensors deployed off the coast of Duck, North Carolina, from 9 October 2015 to 6 November 2015. Sea, land, and along-shore breeze periods were closely examined and compared by particle concentration, size and volume distribution, and through extinction coefficients. These data were then examined for possible correlation with wind speed and direction. In sustained along-shore wind periods with an active surf zone, a large impact is observed on the optical effects of the aerosol. A strong transport barrier associated with sharp sea surface temperature gradients was observed in unstable air during cold advection of land- and surf-contaminated aerosol.
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<br>Subjects: CASPER; coastal aerosol; optical effects</div>
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Dridge, Eric R.</div>
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