ИСТИНА

The HITRAN2020 database will be publicly released this year. It is a coordinated effort of experimentalists, theoreticians, atmospheric and planetary scientists who measure, calculate and validate the HITRAN data. The lists for most of the HITRAN molecules in the line-by-line section were updated in comparison with the previous compilation HITRAN2016 [a]. The extent of the updates ranges from updating a few lines of certain molecules to complete replacements of the lists and introducing additional isotopologues. Six new molecules (SO, CH3F, GeH4, CS2, CH3I, and NF3) were also added to HITRAN. In addition, the accuracy of the parameters for major atmospheric absorbers has been increased, often featuring sub-percent uncertainties. The number of parameters was also increased significantly, now incorporating, for instance, non-Voigt line profiles for many gases; broadening by water vapor [b]; update of collision-induced absorption sets [c]. The new edition will continue taking advantage of the modern structure and interface available at www.hitran.org and the HITRAN Application Programming Interface [d]. Their functionality has been extended for the new edition. This talk will provide a brief overview of HITRAN2020 [e] and its main improvements with respect to the previous edition. [a] Gordon et al., (2017). JQSRT. 203, 3–69. [b] Tan et al., (2019) J. Geophys. Res. Atmos. 2019JD030929. [c] Karman et al., (2019) Icarus 328, 160–175. [d] Kochanov et al., ( 2016) JQSRT. 177, 15–30. [e] This work is supported by NASA