The WKLMC empirical line lists (5852-7919 cm‑1) for methane between 80 K and 296 K: "Final" lists for atmospheric and planetary applications

International audienceThe "final" version of the WKLMC (Wang, Kassi, Leshchishina, Mondelain, Campargue) empirical lists for methane at 80 K and 296 K is provided for the 5852-7919 cm‑1 region. It was obtained by combining the WKMC list [A. Campargue, O. Leshchishina, L. Wang, D. Mondelain, S. Kassi, A.V. Nikitin, J. Quant. Spectrosc. Radiat. Transfer 113 (2012) 1855-1873] with new results obtained by differential absorption spectroscopy (DAS) in the 2ν3 region (5852-6183 cm‑1) [A. Campargue, O. Leshchishina, D. Mondelain, S. Kassi and A. Coustenis, J. Quant. Spectrosc. Radiat. Transfer 118 (2013) 49-59]. Two empirical lists for methane at 296 K and 80 K in "natural" abundance are provided for atmospheric and planetary applications, respectively. They include the isotopologue identification (12CH4, 13CH4 and CH3D) and the lower state energy level, Eemp, derived from the ratio of the line intensities measured at 296 K and 80 K. The 296 K list includes 55 262 absorption lines. The 80 K list is made applicable over a wider range of temperatures by including 30 282 lines observed only at 296 K, with corresponding lower state energy values chosen to make them below the detectivity limit at 80 K. Overall, the 80 K list includes 73 225 absorption lines. For the two temperatures, we provide the list in HITRAN format together with a file allowing for a line by line traceability of the listed spectroscopic parameters. The extrapolation capabilities of the 296 K list towards high temperature (˜1200 K) are discussed