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Title:MID-IR CAVITY RINGDOWN SPECTROSCOPY FOR ATMOSPHERIC ETHANE ABUNDANCE MEASUREMENTS
Author(s):Shen, Linhan
Contributor(s):Okumura, Mitchio; Christensen, Lance; Bui, Thinh Quoc
Subject(s):Instrument/Technique Demonstration
Abstract:We demonstrate a mid-IR (3.3 $mu$m) cw cavity ringdown spectrometer capable of measuring atmospheric ethane abundances. This technique can measure atmospheric ethane concentration as low as 100 ppb. The atmospheric ethane to methane ratio could also be observed by measuring methane concentration using a high precision near-IR (1.65 $mu$m) cavity ringdown spectrometer. We will also discuss the daily variation of ethane abundance and ethane to methane ratio in Pasadena observed using this tecnhique.
Issue Date:25-Jun-15
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:ACS
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/79331
Date Available in IDEALS:2016-01-05


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