dc.creator Brown, Steven S. en_US dc.date.accessioned 2009-07-29T12:40:41Z dc.date.available 2009-07-29T12:40:41Z dc.date.issued 2009 en_US dc.identifier 2009-RD-01 en_US dc.identifier.uri http://hdl.handle.net/1811/38039 dc.description Author Institution: NOAA Earth System Research Laboratory, Boulder, CO 80305 en_US dc.description.abstract 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 $\alpha$-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. en_US dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title NITROGEN OXIDES, AEROSOLS AND OXYGENATED VOC: APPLICATIONS OF VISIBLE CAVITY ENHANCED OPTICAL EXTINCTION SPECTROSCOPY TO ATMOSPHERIC MEASUREMENTS en_US dc.type Article en_US
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