An empirical line list for methane near 1 µm (9028-10,435 cm−1)

- The FTS methane absorption spectrum is recorded near 1 µm.
- The first empirical line list is constructed in the tetracontad (9523-10,435 cm−1).
- The 3ν3 region near 9047 cm−1 (9028-9200 cm−1) is revisited.

The highly congested absorption spectrum of methane near 1 µm was recorded by Fourier Transform Spectroscopy at room temperature. The detectivity threshold of the recordings corresponds to an intensity cut off on the order of 2×10−26 cm/molecule. An empirical line list is constructed for the 9028-10,435 cm−1 spectral region. It consists of (i) 7212 lines in the 9520-10,435 cm−1 interval corresponding to the tetracontad and (ii) 574 lines in the 9028-9200 cm−1 interval corresponding to the high energy region of the triacontad, dominated by the 3ν3 band near 9046 cm−1. The first line list fills an important gap in the HITRAN database.The obtained data set constitutes a solid basis for future rovibrational assignments on the basis of advanced theoretical methods.