The HITRAN2020 molecular spectroscopic database

🤖 Plain-English Summary

The HITRAN database is a compilation of molecular spectroscopic parameters. The HITRAN2020 edition continues to take advantage of the relational structure and efficient interface available at www.hitran.org and the HITRAN Application Programming Interface (HAPI).

🔑 Key Findings

• It was established in the early 1970s and is used by various computer codes to predict and simulate the transmission and emission of light in gaseous media (with an emphasis on terrestrial and planetary atmospheres).
• The HITRAN compilation is composed of five major components: the line-by-line spectroscopic parameters required for high-resolution radiative-transfer codes, experimental infrared absorption cross-sections (for molecules where it is not yet feasible for representation in a line-by-line form), collision-induced absorption data, aerosol indices of refraction, and general tables (including partition sums) that apply globally to the data.
• This paper describes the contents of the 2020 quadrennial edition of HITRAN.

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