GOSAT-2014 methane spectral line list

Self- and air-broadened line shapes in the 2ν3 P and R branches of 12CH4

“…Even though low-temperature spectra down to 130 K were included in the analysis, the temperature dependence of the off-diagonal relaxation matrix elements could be determined for only for two sets of line-mixed pairs ( Table 8) better accuracy. We note that, employing a Voigt line shape model, Nikitin et al [34] re-fitted their earlier air-broadening and air-shift coefficients [33] for the strong 2ν 3 (F2) transitions with new additional data. Our measurements will be made available to those authors [34] so they can compare the two sets of measurements in their forthcoming papers.…”

“…We note that, employing a Voigt line shape model, Nikitin et al [34] re-fitted their earlier air-broadening and air-shift coefficients [33] for the strong 2ν 3 (F2) transitions with new additional data. Our measurements will be made available to those authors [34] so they can compare the two sets of measurements in their forthcoming papers.…”

“…Referring to Table 1, it is clear that some of those studies measured only narrow spectral regions covering a single manifold or even part of a manifold while other studies are quite extensive and include hundreds of measurements (e.g., [23][24][25]33,34,42]). Nikitin et al [34] have improved their previous work [33] by refitting their data with six new additional spectra and extended their assignments to include J values up to 12.…”

“…Nikitin et al [34] have improved their previous work [33] by refitting their data with six new additional spectra and extended their assignments to include J values up to 12. Our manuscript was almost completed before their new studies [34] were published.…”

“…Nikitin et al [34] have improved their previous work [33] by refitting their data with six new additional spectra and extended their assignments to include J values up to 12. Our manuscript was almost completed before their new studies [34] were published. Hence we have compared our measurements only with values reported in [33].The present results are compared to selected studies that reported the larger numbers of measurements.…”