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Proceedings Paper

Estimation of aerosol microphysical parameters from visible and infrared extinction measurements
Author(s): Daniel L. Hutt
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Paper Abstract

We show that an effective scattering radius rs and aerosol extinction coefficient at a wavelength of 3.8 micrometer (alpha) e (3.8 micrometer) can be estimated from the simultaneous measurement of visible and 10.6 micrometer extinction in haze and fog. For fog, functions relating rs and (alpha) e (3.8 micrometer) to the ratio of 10.6 micrometer to 0.55 micrometer extinction were derived based on accepted size distribution models for clouds and fog. For haze, functions for rs and (alpha) e (3.8 micrometer) were based on an analysis of measured aerosol size distributions. We compare values of rs and (alpha) e (3.8 micrometer) derived from measurements of local visible and 10.6 micrometer aerosol extinction to values obtained from aerosol size spectra. We conclude that measurements of visible and 10.6 micrometer aerosol extinction provide useful additional information about the aerosol.

Paper Details

Date Published: 14 October 1996
PDF: 12 pages
Proc. SPIE 2828, Image Propagation through the Atmosphere, (14 October 1996); doi: 10.1117/12.254202
Show Author Affiliations
Daniel L. Hutt, Defence Research Establishment Valcartier (Canada)

Published in SPIE Proceedings Vol. 2828:
Image Propagation through the Atmosphere
Christopher Dainty; Luc R. Bissonnette, Editor(s)

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