Nitrogen Oxides, Aerosols and Oxygenated Voc: Applications of Visible Cavity Enhanced Optical Extinction Spectroscopy to Atmospheric Measurements

Details Nitrogen Oxides, Aerosols and Oxygenated Voc: Applications of Visible Cavity Enhanced Optical Extinction Spectroscopy to Atmospheric Measurements Nitrogen Oxides, Aerosols and Oxygenated Voc: Applications of Visible Cavity Enhanced Optical Extinction Spectroscopy to Atmospheric Measurements

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..conferd01b&link_type=abstract

"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec

Computer Science

Mini-Symposium: Cavity Enhanced Spectroscopy

Scientific paper

Cavity enhanced extinction spectroscopy, in which the long effective path lengths available within an optical cavity provide a highly sensitive measurement of optical extinction, has seen increasing application as an analytical method in atmospheric science in recent years. This presentation will survey recent developments of field instrumentation based on of cavity enhanced spectroscopy from our laboratories, with an emphasis both on the evolution of the technology and lessons learned from deployment on platforms such as tall towers, ships and aircraft. Examples include detection of nocturnal nitrogen oxides (NO{_2}, NO{_3} and N{_2}O{_5}) by cavity ring-down spectroscopy, beginning with pulsed lasers but more recently with diode lasers; aerosol extinction spectroscopy; and measurements of α-dicarbonyls using broadband methods. Although all of these examples are based on visible spectroscopy, they are illustrative of the variety of different light sources now in use, and they allow for some comparison between different approaches in terms of sensitivity and specificity.

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