Articles | Volume 25, issue 8
https://doi.org/10.5194/acp-25-4531-2025
https://doi.org/10.5194/acp-25-4531-2025
Research article
 | 
24 Apr 2025
Research article |  | 24 Apr 2025

Impacts of sea ice leads on sea salt aerosols and atmospheric chemistry in the Arctic

Erin J. Emme and Hannah M. Horowitz

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Cited articles

Abbatt, J. P. D., Thomas, J. L., Abrahamsson, K., Boxe, C., Granfors, A., Jones, A. E., King, M. D., Saiz-Lopez, A., Shepson, P. B., Sodeau, J., Toohey, D. W., Toubin, C., von Glasow, R., Wren, S. N., and Yang, X.: Halogen activation via interactions with environmental ice and snow in the polar lower troposphere and other regions, Atmos. Chem. Phys., 12, 6237–6271, https://doi.org/10.5194/acp-12-6237-2012, 2012. 
Alvarez-Aviles, L., Simpson, W. R., Douglas, T. A., Sturm, M., Perovich, D., and Domine, F.: Frost flower chemical composition during growth and its implications for aerosol production and bromine activation, J. Geophys. Res.-Atmos., 113, 2008JD010277, https://doi.org/10.1029/2008JD010277, 2008. 
AMSR-E Arctic lead area fraction: Integrated Climate Data Center (ICDC), CEN, University of Hamburg, Hamburg, Germany [data set], https://www.cen.uni-hamburg.de/en/icdc/data/cryosphere/lead-area-fraction-amsre.html (last access: 5 February 2025), 2002–2008. 
Barrett, A. P., Stroeve, J. C., and Serreze, M. C.: Arctic Ocean Precipitation From Atmospheric Reanalyses and Comparisons With North Pole Drifting Station Records, J. Geophys. Res.-Oceans, 125, e2019JC015415, https://doi.org/10.1029/2019JC015415, 2020. 
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Short summary
There is uncertainty in the sources of Arctic cold-season (November–April) sea salt aerosols. Using a chemical transport model and satellite observations, we quantify Arctic-wide sea salt aerosol emissions from fractures in sea ice, called open sea ice leads, and their atmospheric chemistry impacts for the cold season. We show that sea ice leads contribute to Arctic sea salt aerosols and bromine, especially in under-observed regions.
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