Absorption spectra of the R6 manifold of 12CH4 in the 2nu3 band recorded by CRDS technique

The database is made of the set of the CRDS absorption spectra recorded for the R6 manifold of the 2ν3 band of 12CH4 following the procedures and with the experimental setups described in the paper entitled "Temperature dependence of the absorption of the R(6) manifold of the 2ν3 band of methane in air in support of the MERLIN mission" by S. Vasilchenko, T. Delahaye, S. Kassi, A. Campargue, R. Armante, H. Tran, D. Mondelain, and submitted to JQSRT. Each averaged spectrum corresponds to a .csv file including the following columns: absolute wavenumber (in cm-1), cavity loss rate 1/cτ (in 10-6 cm-1), temperature (in °C) and total pressure (in Torr).

Two mixtures of CH4 in air are used for these measurements:

- a ~2 ppm mixture with CH4: 1.984±0.03(2σ) Mol-ppm ; Ar : ~1 Mol-%, O2 : ~20.95 Mol-%, N2 : ~78.05 Mol-%) 

- a ~8eng ppm mixture with CH4: 8.022±0.08(2σ) Mol-ppm ; Ar : ~1 Mol-%, O2 : ~20.95 Mol-%, N2 : ~78.05 Mol-%)