First direct observation of sea salt aerosol production from blowing snow above sea ice
The study reports on the first direct observations of sea salt aerosol (SSA) production from blowing snow above sea ice, thereby validating a model hypothesis to account for winter time SSA maxima in the Antarctic. Blowing or drifting snow often leads to increases in SSA during and after storms. For the first time it is shown that snow on sea ice is depleted in sulfate relative to sodium with respect to seawater. Similar depletion in bulk aerosol sized ∼0.3–6 µm above sea ice provided the evidence that most sea salt originated from snow on sea ice and not the open ocean or leads.
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Reference: Frey, M.M., Norris, S.J., Brooks, I.M., et al. (2020), First direct observation of sea salt aerosol production from blowing snow above sea ice, Atmos. Chem. Phys., 20, 2549–2578. https://doi.org/10.5194/acp-20-2549-2020
Read and download the publication here: https://www.atmos-chem-phys.net/20/2549/2020/