An Accurate, Extensive, and Practical Line List of Methane for the HITEMP Database
| Autor: | Michael Rey, Iouli E. Gordon, Laurence S. Rothman, Roman V. Kochanov, Andrei V. Nikitin, Vladimir G. Tyuterev, Robert J. Hargreaves |
|---|---|
| Přispěvatelé: | Harvard-Smithsonian Center for Astrophysics (CfA), Harvard University [Cambridge]-Smithsonian Institution, Groupe de spectrométrie moléculaire et atmosphérique (GSMA), Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), V.E. Zuev Institute of Atmospheric Optics (IAO), Siberian Branch of the Russian Academy of Sciences (SB RAS), QUAMER laboratory , Tomsk State University, Tomsk State University [Tomsk] |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010504 meteorology & atmospheric sciences
[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] FOS: Physical sciences computer.software_genre 01 natural sciences Methane Line list chemistry.chemical_compound 0103 physical sciences [CHIM]Chemical Sciences 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Methane absorption ComputingMilieux_MISCELLANEOUS 0105 earth and related environmental sciences Earth and Planetary Astrophysics (astro-ph.EP) Physics [PHYS]Physics [physics] Database Radiative transfer modeling Order (ring theory) Astronomy and Astrophysics Single line Astrophysics - Solar and Stellar Astrophysics chemistry Space and Planetary Science HITRAN computer Astrophysics - Earth and Planetary Astrophysics Interpolation |
| Zdroj: | Astrophysical Journal Supplement Astrophysical Journal Supplement, American Astronomical Society, 2020, 247 (2), pp.55. ⟨10.3847/1538-4365/ab7a1a⟩ |
| ISSN: | 0067-0049 1538-4365 |
| Popis: | A methane line list for the HITEMP spectroscopic database, covering 0-13,400 cm$^{-1}$ ($>$746 nm), is presented. To create this compilation, ab initio line lists of $^{12}$CH$_{4}$ from Rey et al. (2017) ApJ, 847, 105 (provided at separate temperatures in the TheoReTS information system), are now combined with HITRAN2016 methane data to produce a single line list suitable for high-temperature line-by-line calculations up to 2000 K. An effective-temperature interpolation model was created in order to represent continuum-like features at any temperature of interest. This model is advantageous to previously-used approaches that employ so-called ``super-lines'', which are suitable only at a given temperature and require separate line lists for different temperatures. The resultant HITEMP line list contains $\sim$32 million lines and is significantly more flexible than alternative line lists of methane, while accuracy required for astrophysical or combustion applications is retained. Comparisons against experimental observations of methane absorption at high temperatures have been used to demonstrate the accuracy of the new work. The line list includes both strong lines and quasi-continuum features and is provided in the common user-friendly HITRAN/HITEMP format, making it the most practical methane line list for radiative transfer modeling at high-temperature conditions. 25 pages, 12 figures, submitted to the Astrophysical Journal Supplement Series |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|