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Ambient Aerosol Extinction in Great Smoky Mountains National Park.

Published by National Park Service | Department of the Interior | Metadata Last Checked: January 25, 2026 | Last Modified: 2018-10-17T00:00:00Z
Field Methods: The following instruments provided by Handix Scientific will be installed at the Look Rock Site in Great Smoky Mountains National Park: Open-Path Cavity Ringdown Spectrometer (OPCRDS), Cavity Attenuated Phase Shift PM Extinction Monitor (CAPS). These instruments will run autonomously and sample ambient air at the site. Data from these instruments will be compared with publicly available data from the Interagency Monitoring of Protected Visual Environments (IMPROVE) program.

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