Articles | Volume 23, issue 24
https://doi.org/10.5194/acp-23-15783-2023
https://doi.org/10.5194/acp-23-15783-2023
Research article
 | 
22 Dec 2023
Research article |  | 22 Dec 2023

Active thermokarst regions contain rich sources of ice-nucleating particles

Kevin R. Barry, Thomas C. J. Hill, Marina Nieto-Caballero, Thomas A. Douglas, Sonia M. Kreidenweis, Paul J. DeMott, and Jessie M. Creamean

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Cited articles

Agresti, A. and Coull, B. A.: Approximate is better than “exact” for interval estimation of binomial proportions, Am. Stat., 52, 119–126, https://doi.org/10.2307/2685469, 1998. 
Barry, K.: ARCtic Study of Permafrost Ice Nucleation (ARCSPIN) Cumulative Ice Nucleating Particles (INP) Data, Alaska, 2021, Arctic Data Center [data set], https://doi.org/10.18739/A2833N072, 2023. 
Barry, K. R., Hill, T. C. J., Jentzsch, C., Moffett, B. F., Stratmann, F., and DeMott, P. J.: Pragmatic protocols for working cleanly when measuring ice nucleating particles, Atmos. Res., 250, 105419, https://doi.org/10.1016/j.atmosres.2020.105419, 2021. 
Barry, K. R., Hill, T. C. J., Moore, K. A., Douglas, T. A., Kreidenweis, S. M., DeMott, P. J., and Creamean, J. M.: Persistence and Potential Atmospheric Ramifications of Ice-Nucleating Particles Released from Thawing Permafrost, Environ. Sci. Technol., 57, 3505–3515, https://doi.org/10.1021/acs.est.2c06530, 2023. 
Bigg, E. K.: Ice forming nuclei in the high Arctic, Tellus B, 48, 223–233, https://doi.org/10.1034/j.1600-0889.1996.t01-1-00007.x, 1996. 
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Ice-nucleating particles (INPs) are important for the climate due to their influence on cloud properties. To understand potential land-based sources of them in the Arctic, we carried out a survey near the northernmost point of Alaska, a landscape connected to the permafrost (thermokarst). Permafrost contained high concentrations of INPs, with the largest values near the coast. The thermokarst lakes were found to emit INPs, and the water contained elevated concentrations.
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