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, CH 3 F, GeH 4 , CS 2 , CH 3 I, and NF 3 ) 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.

The 2016 edition of HITRAN database a is available now b . This new edition of the database takes advantage of the new structure and can be accessed through HITRANonline (www.hitran.org) c .The line-by-line lists for almost all of the trace atmospheric species were updated in comparison with the previous edition HITRAN2012. These extended update covers not only updating few transitions of the certain molecules, but also complete replacements of the whole line lists, and as well as introduction of new spectroscopic parameters for non-Voigt line shape. The new line lists for NH

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The high-temperature molecular spectroscopic database, HITEMP [1], aims to provide line lists for use in the modeling of high-temperature environments. Usage can range from the sensing of specific transitions in combustion processes to simulating the broadband opacities of exoplanet atmospheres. One challenge has been to balance the substantial quantity of transitions necessary for high-temperature applications, while remaining practical for use in line-by-line radiative transfer calculations. For methane [2], a method was devised to compress the very weak intensities of the underlying ab initio transitions into "effective" lines, which can be used in regular radiative transfer calculations.The HITEMP database currently constitutes line lists for eight molecules (H 2 O, CO 2 , N 2 O, CO, CH 4 , NO, NO 2 , OH) and this talk will summarize the recent updates and additions to the HITEMP2010 data [2,3,4], including the new line list for water vapor [5]. A brief discussion of the remaining updates and proposed additions will also be included.