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Proceedings Paper

Simulation study for gaseous fluxes from an area source using computed tomography and optical remote sensing
Author(s): Ram A. Hashmonay; Michael G. Yost; D. Bruce Harris; Edgar L. Thompson
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Paper Abstract

This paper presents a new approach to quantify emissions from fugitive gaseous air pollution sources. We combine Computed Tomography (CT) with Path-Integrated Optical Remote Sensing (PI-ORS) concentration data in a new field beam geometry. Path integrated concentrations are sampled in a vertical plane downwind from the source along several radial beam paths. An innovative CT technique, which applies the Smooth Basis Function Minimization (SBFM) method to the beam data in conjunction with measured wind data, is used to estimate the total flux from an area source. We conducted simulation study to evaluate the proposed methodology under two beam geometry and configurations. This approach was found to be robust for a wide range of fluctuating wind directions. In the very sparse beam geometry we examined (5 beam paths), successful emission rates were retrieved over a 70 degree range of wind directions.

Paper Details

Date Published: 10 February 1999
PDF: 6 pages
Proc. SPIE 3534, Environmental Monitoring and Remediation Technologies, (10 February 1999); doi: 10.1117/12.339021
Show Author Affiliations
Ram A. Hashmonay, Univ. of Washington (United States)
Michael G. Yost, Univ. of Washington (United States)
D. Bruce Harris, U.S. Environmental Protection Agency (United States)
Edgar L. Thompson, U.S. Environmental Protection Agency (United States)

Published in SPIE Proceedings Vol. 3534:
Environmental Monitoring and Remediation Technologies
Tuan Vo-Dinh; Robert L. Spellicy, Editor(s)

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