Status of the HITRAN and HITEMP databases

<p>HITRAN2012¹ is the current official release of the database. In HITRAN2012, the line-by-line lists for almost all of the 42 HITRAN molecules were updated with respect to the previous compilation (HITRAN2008²). The scope of the updates ranges from corrections to the representations of quantum assignments to complete replacements of the lists and introduction of new isotopologues. Five new molecules and their isotopologues were added to the database, namely: HC₃N, C₄H₂, H₂, CS and SO₃. Some of the most important updates, relevant to the studies of the terrestrial atmosphere such as for water vapor, CO₂, molecular oxygen, etc, will be presented in more detail. Examples of definite improvements of the quality and extent of the spectral parameters will be demonstrated with respect to applications. Some remaining problems will also be shown. In addition, new as well as improved sets of cross-section data have been added. Finally, collision-induced absorption (CIA) parameters were introduced into the database for the first time, and this initiative already has received very positive feedback from the community.</p> <p>The immediate plans for updates to the existing spectral parameters will be presented. The status and future plans for the HITEMP database³ will also be discussed. The project for adapting a relational structure of the database with a dynamic and user-friendly web interface will be described. The new structure will enable introduction of a generalized line-shape formalism and parameters as well as many other advantages.</p> <p>The HITRAN database is supported by the NASA Earth Observing System (EOS) under the grant NNX11AF91G, and by the NASA Planetary Atmospheres program under grant NNX13AI59G.</p