Abstract
Fluxes of primary marine aerosol in the sub-micron fraction were measured using a flux package consisting of a sonic anemometer, a Condensation Particle Counter (CPC) and an optical particle counter (OPC) equipped with a heated inlet. Whereas the CPC provides the total particle number flux of particles larger than 10 nm, the OPC measures size segregated fluxes for particles between 0.5 and 5 μm radius. By varying the temperature of the OPC inlet, particles of certain composition can be selected. Results are presented with the inlet temperature at 100°C (dry particles retaining most of the aerosol material, representative of sea spray aerosol) or at 300°C which volatilizes all material except sea salt and elementary carbon. Temperature scans confirm the choice of these temperatures to discriminate between sea spray and sea salt. This flux system was deployed at the end of the 560 m long pier of the US Army Corps of Engineers Field Research Facility in Duck (NC, USA). Initial results show the increase of the sea spray fluxes with wind speed u, roughly varying as u 3 for u up to 16 ms−1.
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de Leeuw, G., Moerman, M., Zappa, C.J., McGillis, W.R., Norris, S., Smith, M. (2007). Eddy Correlation Measurements of Sea Spray Aerosol Fluxes. In: Garbe, C.S., Handler, R.A., Jähne, B. (eds) Transport at the Air-Sea Interface. Environmental Science and Engineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-36906-6_21
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