# Marvel analysis of the measured high-resolution rovibrational spectra of H2S

## TL;DR

This paper compiles and critically reviews high-resolution rovibrational spectra of H2S, determining energy levels with the MARVEL technique and comparing results with theoretical models, enhancing spectroscopic data accuracy.

## Contribution

It presents a comprehensive, critically reviewed database of H2S spectra and applies the MARVEL method to derive precise energy levels, distinguishing ortho and para states.

## Key findings

- Determined 3969 ortho and 3467 para energy levels.
- Compiled 44,325 measured transitions from 33 publications.
- Validated MARVEL results against theoretical linelists.

## Abstract

44325 measured and assigned transitions of H$_2^{32}$S, the parent isotopologue of the hydrogen sulfide molecule, are collated from 33 publications into a single database and reviewed critically. Based on this information, rotation-vibration energy levels are determined for the ground electronic state using the Measured Active Rotational-Vibrational Energy Levels (MARVEL) technique. The ortho and para principal components of the measured spectroscopic network of H$_2^{32}$S are considered separately. The verified set of 25293 ortho- and 18778 para- H$_2^{32}$S transitions determine 3969 ortho and 3467 para energy levels. The Marvel results are compared with alternative data compilations, including a theoretical variational linelist.