arts-cat

The steps required to generate Artscat, the absorption line catalog of ARTS

This is the software used to generate Artscat, which is available as supporting data to ARTS (www.github.com/atmtools/arts)

The intent of this project is to curate Artscat and to continuously provide updates to various parameters within it.

Usage

python arts-cat.py path/to/hitran-file

Use --help to see more options.

Recipies

The current recipies are

1. ReadHitran --- Reads Hitran data base (hitran.org) and generates a basic set of data. Reference: I. Gordon, L. Rothman, R. Hargreaves et al. (2021), "The HITRAN2020 molecular spectroscopic database", Journal of Quantitative Spectroscopy and Radiative Transfer, 107949, doi.org/10.1016/j.jqsrt.2021.107949.

2. Water183 --- Replaces the 183 GHz absorption line with one of our own. Reference: O. Bobryshev, S.A. Buehler, V.O. John, M. Brath, and H. Brogniez (2018), Is There Really a Closure Gap Between 183.31-GHz Satellite Passive Microwave and In Situ Radiosonde Water Vapor Measurements?, IEEE Transaction On Geoscience And Remote Sensing, 56(5), 2904-2910, doi:10.1109/TGRS.2017.2786548.

3. Zeeman --- Replace Zeeman coefficients with pre-computed coefficients. References: R. Larsson, B. Lankhaar, and P. Eriksson (2019), Updated Zeeman effect splitting coefficients for molecular oxygen in planetary applications, Journal of Quantitative Spectroscopy and Radiative Transfer, 224, 431-438, doi.org/10.1016/j.jqsrt.2018.12.004 AND R. Larsson and B. Lankhaar (2020), Zeeman effect splitting coefficients for ClO, OH and NO in some earth atmosphere applications, Journal of Quantitative Spectroscopy and Radiative Transfer, 250, 107050, doi.org/10.1016/j.jqsrt.2020.107050.

4. OxygenLM --- Set line mixing of the 60 GHz ground-state lines of O2-66 by own calculations. Reference: D.S. Makarov, M.Y. Tretyakov, and P.W. Rosenkranz (2020), Revision of the 60-GHz atmospheric oxygen absorption band models for practical use, 243, 106098, doi.org/10.1016/j.jqsrt.2019.106798.