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A world-wide comparison of aerosol data

: Eijk, Alexander M. van; Piazzola, Jacques; Zuijlen, Suzanne van; Cohen, Leo; Moerman, Marcel; Missamou, Tathy; Tedeschi, Gilles; Stein, Karin


Stein, K.U. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Optics in Atmospheric Propagation and Adaptive Systems XIX : Edinburgh, United Kingdom, September 26, 2016
Bellingham, WA: SPIE, 2016 (Proceedings of SPIE 10002)
Paper 1000202, 7 pp.
Conference "Optics in Atmospheric Propagation and Adaptive Systems" <19, 2016, Edinburgh>
Conference Paper
Fraunhofer IOSB ()
marine aerosols; measurements; electro-optical propagation; transmission; fetch; source function

A comparison of aerosol data acquired at five different sites around the globe is presented. All data has been acquired with the same instrumentation and representative size distributions for marine air masses at 10 m/s wind speed have been selected for comparison. Differences in the concentrations of larger and smaller aerosols at the various sites are explained in terms of fetch, trade winds, shielding, pollution, seawater temperature and phytoplankton bloom. The differences in size distribution induce significant differences in the extinction coefficients from the VIS to the LWIR at the various sites. Consequently, the transmission over a specific range also varies significantly. This suggests that a detailed analysis of the conditions at each site is necessary in order to understand the exact aerosol behavior and to correctly predict electro-optical propagation effects due to aerosols.