Articles | Volume 23, issue 5
https://doi.org/10.5194/acp-23-2927-2023
https://doi.org/10.5194/acp-23-2927-2023
Research article
 | 
06 Mar 2023
Research article |  | 06 Mar 2023

Late summer transition from a free-tropospheric to boundary layer source of Aitken mode aerosol in the high Arctic

Ruth Price, Andrea Baccarini, Julia Schmale, Paul Zieger, Ian M. Brooks, Paul Field, and Ken S. Carslaw

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Cited articles

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Allan, J. D., Williams, P. I., Najera, J., Whitehead, J. D., Flynn, M. J., Taylor, J. W., Liu, D., Darbyshire, E., Carpenter, L. J., Chance, R., Andrews, S. J., Hackenberg, S. C., and McFiggans, G.: Iodine observed in new particle formation events in the Arctic atmosphere during ACCACIA, Atmos. Chem. Phys., 15, 5599–5609, https://doi.org/10.5194/acp-15-5599-2015, 2015. a
Alterskjær, K., Kristjánsson, J. E., and Hoose, C.: Do anthropogenic aerosols enhance or suppress the surface cloud forcing in the Arctic?, J. Geophys. Res.-Atmos., 115, D22204, https://doi.org/10.1029/2010JD014015, 2010. a
AMAP: Arctic Climate Change Update 2021: Key Trends and Impacts, Summary for Policy-makers, Arctic Monitoring and Assessment Programme (AMAP), Trømso, Norway, ISBN 978-82-7971-201-5, 2021. a
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Arctic clouds can control how much energy is absorbed by the surface or reflected back to space. Using a computer model of the atmosphere we investigated the formation of atmospheric particles that allow cloud droplets to form. We found that particles formed aloft are transported to the lowest part of the Arctic atmosphere and that this is a key source of particles. Our results have implications for the way Arctic clouds will behave in the future as climate change continues to impact the region.
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