Supplementary material to "Light-absorbing snow impurities: Nine years (2016–2024) of snowpack sampling close to Sonnblick Observatory, Austrian Alps"

Concentrations and depositions of organic and elemental carbon in single layers of the seasonal snow covers collected between 2016 and 2024 are given, which are based on thermal-optical analysis data. Furthermore, data for method development presented in the publication as well as the mineral dust concentrations and depositions for single layers approximated based on thermal-optical analysis data are included.

Context and methodology Light-absorbing snow impurities were analysed in the seasonal snow covers collected between 2016 and 2024. After filtration onto quartz fibre filters, samples were subjected to thermal-optical analysis to obtain elemental and organic carbon loadings. Samples containing mineral dust were identified and the bias introduced by the dust on the elemental and organic carbon results quantified.