Articles | Volume 24, issue 3
https://doi.org/10.5194/acp-24-1939-2024
https://doi.org/10.5194/acp-24-1939-2024
Research article
 | 
13 Feb 2024
Research article |  | 13 Feb 2024

How well are aerosol–cloud interactions represented in climate models? – Part 1: Understanding the sulfate aerosol production from the 2014–15 Holuhraun eruption

George Jordan, Florent Malavelle, Ying Chen, Amy Peace, Eliza Duncan, Daniel G. Partridge, Paul Kim, Duncan Watson-Parris, Toshihiko Takemura, David Neubauer, Gunnar Myhre, Ragnhild Skeie, Anton Laakso, and James Haywood

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How well are aerosol–cloud interactions represented in climate models? – Part 2: Isolating the aerosol impact on clouds following the 2014–15 Holuhraun eruption
George Jordan, Florent Malavelle, Jim Haywood, Ying Chen, Ben Johnson, Daniel Partridge, Amy Peace, Eliza Duncan, Duncan Watson-Parris, David Neubauer, Anton Laakso, Martine Michou, and Pierre Nabat
EGUsphere, https://doi.org/10.5194/egusphere-2025-835,https://doi.org/10.5194/egusphere-2025-835, 2025
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In-plume and out-of-plume analysis of aerosol–cloud interactions derived from the 2014–2015 Holuhraun volcanic eruption
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Subject: Aerosols | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Cited articles

Aas, W., Mortier, A., Bowersox, V., Cherian, R., Faluvegi, G., Fagerli, H., Hand, J., Klimont, Z., Galy-Lacaux, C., Lehmann, C., and Myhre, C. L.: Global and regional trends of atmospheric sulfur, Sci. Rep.-UK, 9, 953, https://doi.org/10.1038/s41598-018-37304-0, 2019. 
Ágústsdóttir, T., Woods, J., Greenfield, T., Green, R. G., White, R. S., Winder, T., Brandsdóttir, B., Steinthórsson, S., and Soosalu, H.: Strike-slip faulting during the 2014 Bárðarbunga-Holuhraun dike intrusion, central Iceland, Geophys. Res. Lett., 43, 1495– 1503, https://doi.org/10.1002/2015GL067423, 2016. 
Arason, Þ., Bjornsson, H., Petersen, G. N., Jónasdóttir, E. B., and Oddsson B. B.: Plume height during the 2014–2015 Holuhraun volcanic eruption, EGU General Assembly, Vienna, Austria, 12–17 April 2015, EGU2015-11498, 2015. 
Athanassiadou, M., Francis, P. N., Saunders, R. W., Atkinson, N. C., Hort, M. C., Havemann, S., Thelen, J.-C., and Bush, M.: A case study of sulphur dioxide identification in three different volcanic eruptions, using Infrared satellite observations (IASI), Meteorol. Appl., 23, 477–490, https://doi.org/10.1002/met.1572, 2016. 
Barsotti, S.: Probabilistic hazard maps for operational use: the case of SO2 air pollution during the Holuhraun eruption (Bárðarbunga, Iceland) in 2014–2015, B. Volcanol., 82, 56, https://doi.org/10.1007/s00445-020-01395-3, 2020. 
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Short summary
The 2014–15 Holuhraun eruption caused a huge aerosol plume in an otherwise unpolluted region, providing a chance to study how aerosol alters cloud properties. This two-part study uses observations and models to quantify this relationship’s impact on the Earth’s energy budget. Part 1 suggests the models capture the observed spatial and chemical evolution of the plume, yet no model plume is exact. Understanding these differences is key for Part 2, where changes to cloud properties are explored.
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