We present comprehensive experimental line lists of methane (CH4) at high temperatures obtained by recording Fourier transform infrared emission spectra. Calibrated line lists are presented for the temperatures 300-1400°C at twelve 100°C intervals spanning the 960-5000?cm–1 (2.0-10.4 μm) region of the infrared. This range encompasses the dyad, pentad, and octad regions, i.e., all fundamental vibrational modes along with a number of combination, overtone and hot bands. Using our CH4 spectra, we have estimated empirical lower state energies (E low in cm–1) and our values have been incorporated into the line lists along with line positions ( in cm–1) and calibrated line intensities (S' in cm molecule–1). We expect our hot CH4 line lists to find direct application in the modeling of planetary atmospheres and brown dwarfs.
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