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Frequency-agile, rapid scanning cavity ring-down spectroscopy (FARS-CRDS) measurements of the (30012)

Published

Author(s)

David A. Long, Szymon S. Wojtewicz, Charles E. Miller, Joseph T. Hodges

Abstract

We present new high accuracy measurements of the (30012)←(00001) CO¬2 band near 1575 nm recorded with a frequency-agile, rapid scanning cavity ring-down spectrometer. The resulting spectra were fit with the partially correlated, quadratic-speed-dependent Nelkin-Ghatak profile with line mixing. Significant differences were observed between the fitted line shape parameters and those found in existing databases which are based upon more simplistic line profiles. Absolute transition frequencies which were referenced to an optical frequency comb are given as well as the other line shape parameters needed to model this line profile. These high accuracy measurements should allow for improved atmospheric retrievals of greenhouse gas concentrations by current and future remote sensing missions.
Citation
Journal of Quantitative Spectroscopy and Radiative Transfer
Volume
161

Keywords

Carbon dioxide, Cavity ring-down spectroscopy, Line shape effects, Line mixing.

Citation

Long, D. , Wojtewicz, S. , Miller, C. and Hodges, J. (2015), Frequency-agile, rapid scanning cavity ring-down spectroscopy (FARS-CRDS) measurements of the (30012)<--(00001) near-infrared carbon dioxide band, Journal of Quantitative Spectroscopy and Radiative Transfer (Accessed April 18, 2024)
Created April 3, 2015, Updated February 19, 2017