Estimation of aerosol microphysical parameters from visible and infrared extinction measurements

Daniel L. Hutt

doi:10.1117/12.254202

14 October 1996 Estimation of aerosol microphysical parameters from visible and infrared extinction measurements

Daniel L. Hutt

Proceedings Volume 2828, Image Propagation through the Atmosphere; (1996) https://doi.org/10.1117/12.254202
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

We show that an effective scattering radius r_s 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 r_s 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 r_s and (alpha) _e (3.8 micrometer) were based on an analysis of measured aerosol size distributions. We compare values of r_s 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.

Citation Download Citation

Daniel L. Hutt "Estimation of aerosol microphysical parameters from visible and infrared extinction measurements", Proc. SPIE 2828, Image Propagation through the Atmosphere, (14 October 1996); https://doi.org/10.1117/12.254202

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