Mass concentrations of the main species constituting PM1 mass at Gruvebadet (GVB) laboratory, Ny-Alesund, Svalbard from 25 May 2019 til 01 June 2020. PM1 sampled by a High-Volume Sampler on pre-washed and pre-baked quartz-fiber filters. Sampling time: 3-4 days per sample.

H-NMR functional groups & tracers conc. - GVB, Ny-Alesund - May2019-Jun2020. PM1 organic aerosol functional groups distribution as measured by H-NMR, expressed both in 𝜇molH m-3 and 𝜇gC m-3 (using conversion factors described in Decesari et al., 2007) & mass concentrations of some molecular tracers (namely Methane-sulphonate (MSA), Hydroxy methane-sulfonate (HMSA) Di- and Tri- methyl amines (DMA and TMA)), levoglucosan, expressed in 𝜇g m-3

HR-TOF-AMS offline NR-PM1 concentrations - GVB, Ny-Alesund - May2019-Jun2020. Mass concentrations of the main non-refractory PM1 species (sulfate, nitrate, ammonium, chloride and organics) as measured by HR-TOF-AMS on the water-extracts of the PM1 quartz-fiber filters collected by an Hi-Vol sampler (TECORA, equipped with Digitel PM1 sampling inlet) on the roof of Gruvebadet Laboratory at Ny-Alesund, Svalbard from May 2019 til June 2020. Concentrations of specific organic fragments (namely C2H3O and CO2 at m/z 43 and 44, respectively; C2H4O2 and C3H5O2 at m/z 60.02 and 73.03, respectively; all the concentrations data are expressed as 𝜇g m-3. The elemental ratios (i.e., OM:OC, H:C, O:C) measured by HR-AMS are adimensional

Work-sheets:

1) AMS_PMF-Contributions: reporting the contributions of the factors resulting from the Positive Matrix Factorization (PMF) of HR-TOF-AMS spectral dataset:

- contributions to the total WSOM, expressed in 𝜇g m-3 and 𝜇gC m-3

- contributions to the total OC, after multilinear regression, expressed in 𝜇gC m-3 & % (before and after splitting Marine OA in marine POA and SOA based on what reported in the paper)

2) AMS_PMF-Profiles:

- reporting the spectral profiles of the factors resulting from the Factor analyses (PMF) of HR-AMS dataset, expressed in 𝜇g m-3

- the original spectra (eliminating all the isotope ions and the inorganic fragments from the quantified ions) are subtracted by the blanks mean

3) AMS_PMF_Raw_input:

- reporting the input matrixes used for the Positive Matrix Factorization (PMF) factor analysis using ME algorithm

- are reported both the data matrix (named "Data") and the uncertainty matrix ("Err", necessary to run the PMF using the ME2 algorithm)

- Uncertainty/error matrix was prepared following the error propagation approach by Daellenbach et al., 2016.