Quantifying the effects of background concentrations of crude oil pollution on sea ice albedo

* After publication, the authors noted the Y-axis for Figure 4 had the incorrect units. Therefore, a new version includes the corrected Y-axis labels from cm2 kg-1 to m2 g-1, and the updated Figure 4 is attached in the repository.

Wavelength-dependent mass absorption coefficient, and albedo data from Redmond Roche and King (2022).

The oil droplets in this study are considered to have a log-normal size distribution that is representative of weathered oil according to experimental measurements by Otremba (2007). The log-normal distribution is centred on a droplet radius size of 0.05 µm and spans a range of 0.05–5 µm, in line with Haule and Freda (2016).

Haule, K. and Freda, W.: The effect of dispersed Petrobaltic oil droplet size
on photosynthetically active radiation in marine environment, 23, 6506–6516, https://doi.org/ 10.1007/s11356-015-5886-4, 2016.

Otremba, Z.: Oil droplets as light absorbents in seawater, J. Opt. Soc. Am., 15, 8592–8597, https://doi.org/10.1364/OE.15.008592, 2007.