Wind Speed Dependence Of North Atlantic Aerosol Spectra

Michael H. Smith; Pauline M. Park; Ian E. Consterdine

doi:10.1117/12.960880

11 October 1989 Wind Speed Dependence Of North Atlantic Aerosol Spectra

Michael H. Smith, Pauline M. Park, Ian E. Consterdine

Proceedings Volume 1115, Propagation Engineering; (1989) https://doi.org/10.1117/12.960880
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

Aerosol loadings and size distributions, covering the radius range from 0.08 to 23.5μm, have been measured at a coastal site on the island of South Uist, situated off north-west Scotland, for wind speeds ranging from essentially zero to values in excess of 30ms-1. The dependence of aerosol volumetric loading upon wind speed indicate that these loadings continue to increase with increasing wind speed up to the limit of the data set, in contrast to earlier suggestions of a levelling off for speeds beyond about 14ms-1. The temporal decline of particulate concentrations at lower wind speeds is consistent with the results of a simple turbulent deposition model. For a given wind speed, estimates of atmospheric extinction due to the aerosol particles show little variation from visible to infra-red wavelengths. It is suggested that these findings are a consequence of the domination of extinction by the larger aerosol particles found in this environment.

Citation Download Citation

Michael H. Smith, Pauline M. Park, and Ian E. Consterdine "Wind Speed Dependence Of North Atlantic Aerosol Spectra", Proc. SPIE 1115, Propagation Engineering, (11 October 1989); https://doi.org/10.1117/12.960880

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