New High-Resolution Absorption Cross-Section Measurements of HCFC-142b in the Mid-IR Karine Le Bris St Francis Xavier University, Nova Scotia, Canada Kimberly Strong University of Toronto, Ontario, Canada Stella Melo Canadian Space Agency, Québec, Canada
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New High-Resolution Absorption Cross-Section Measurements of HCFC-142b in the Mid-IR Karine Le Bris St Francis Xavier University, Nova Scotia, Canada Kimberly.
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New High-Resolution Absorption Cross-Section Measurements of
HCFC-142b in the Mid-IR Karine Le BrisSt Francis Xavier University, Nova Scotia, Canada
Kimberly StrongUniversity of Toronto, Ontario, Canada
Stella Melo Canadian Space Agency, Québec, Canada
HCFC-142b in the atmosphereHCFC-142b (CF2Cl-CH3) is a substitute to CFC-11
ODP = 0.065
GWP = 1800 for an horizon of 100 yearsComplete phase-out scheduled for 2030
HCFC-142b annual global mean mole fractions from Oram et al., 1995, (blue), the AGAGE (green) and NOAA/ESRL (red) networks (O’Doherty et al., 2004; Montzka et al., 1999). From the Scientific Assessment of Ozone Depletion: 2006
Observed from space by the Canadian Atmospheric Chemistry Experiment (ACE) on the SCISAT-1 satellite mission.
Aim
Improve the available data by acquisition of new Fourier Transform IR spectroscopy spectra at higher resolution (0.02 cm-1) and a larger set of temperature (223K-283K).
Evaluate the evolution of the integrated cross sections with temperature.
Compare experimental results to theoretical values obtained by density functional theory.
Experimental conditions FTS: Bomem DA8.002, 250 cm maximum