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

• Main Authors: Jordan, George, Malavelle, Florent, Chen, Ying, Peace, Amy, Duncan, Eliza, Partridge, Daniel G., Kim, Paul, Watson-Parris, Duncan, Takemura, Toshihiko, Neubauer, David, Myhre, Gunnar, Skeie, Ragnhild, Laakso, Anton, Haywood, James
• Format: Article in Journal/Newspaper
• Language: English
• Published: ETH Zurich 2024
• Subjects: Holuhraun; Iceland
• Online Access: https://dx.doi.org/10.3929/ethz-b-000663171; http://hdl.handle.net/20.500.11850/663171

For over 6 months, the 2014-2015 effusive eruption at Holuhraun, Iceland, injected considerable amounts of sulfur dioxide (SO2) into the lower troposphere with a daily rate of up to one-third of the global emission rate, causing extensive air pollution across Europe. The large injection of SO2, which oxidises to form sulfate aerosol (SO42-), provides a natural experiment offering an ideal opportunity to scrutinise state-of-the-art general circulation models' (GCMs) representation of aerosol-cloud interactions (ACIs). Here we present Part 1 of a two-part model inter-comparison using the Holuhraun eruption as a framework to analyse ACIs. We use SO2 retrievals from the Infrared Atmospheric Sounding Interferometer (IASI) instrument and ground-based measurements of SO2 and SO42- mass concentrations across Europe, in conjunction with a trajectory analysis using the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model, to assess the spatial and chemical evolution of the volcanic plume as ... : Atmospheric Chemistry and Physics, 24 (3) ...