ITS2.13/AS4.29

Volcanic eruptions are a major natural driver of climate variability at interannual to multidecadal time scales. Assessment of volcanically-forced climate variability is complicated by many limiting factors, including the paucity of observed eruptions, uncertainties associated with volcanological forcing datasets for the current and pre-instrumental periods, limitations of proxy-based climate evidence, uncertainties of global aerosol model simulations and the apparent large inconsistencies in the responses to volcanic forcing simulated by current climate models.

This session aims to highlight new results from integrative research on the climatic response to volcanic eruptions of Pinatubo-magnitude and larger, with a special focus on studies conducted under the umbrella of the CMIP6, in particular the VolMIP activity. This session invites contributions that explore the responses of the coupled ocean-atmosphere system to volcanic forcing, from the characterization of past volcanically-forced climate variability, particularly during the Common Era, and on the identification of dominant mechanisms of interannual-to-interdecadal volcanically-forced variability by means of observations, climate reconstruction studies as well as modeling approaches.

This session also welcomes presentations contributing to current international SPARC-SSiRC and PAGES-VICS activities from research aimed at better understanding the stratospheric aerosol layer, its volcanic perturbations and impacts on historical and modern societies. We further invite observational and modelling studies of the 2019 Raikoke aerosol cloud, from recent field campaigns and contributions on the potential role of volcanic eruptions on future climate variability and predictability.

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Co-organized by CL4/GMPV10
Convener: Myriam Khodri | Co-conveners: Claudia Timmreck, Davide Zanchettin, Graham Mann, Matthew Toohey
Volcanic eruptions are a major natural driver of climate variability at interannual to multidecadal time scales. Assessment of volcanically-forced climate variability is complicated by many limiting factors, including the paucity of observed eruptions, uncertainties associated with volcanological forcing datasets for the current and pre-instrumental periods, limitations of proxy-based climate evidence, uncertainties of global aerosol model simulations and the apparent large inconsistencies in the responses to volcanic forcing simulated by current climate models.

This session aims to highlight new results from integrative research on the climatic response to volcanic eruptions of Pinatubo-magnitude and larger, with a special focus on studies conducted under the umbrella of the CMIP6, in particular the VolMIP activity. This session invites contributions that explore the responses of the coupled ocean-atmosphere system to volcanic forcing, from the characterization of past volcanically-forced climate variability, particularly during the Common Era, and on the identification of dominant mechanisms of interannual-to-interdecadal volcanically-forced variability by means of observations, climate reconstruction studies as well as modeling approaches.

This session also welcomes presentations contributing to current international SPARC-SSiRC and PAGES-VICS activities from research aimed at better understanding the stratospheric aerosol layer, its volcanic perturbations and impacts on historical and modern societies. We further invite observational and modelling studies of the 2019 Raikoke aerosol cloud, from recent field campaigns and contributions on the potential role of volcanic eruptions on future climate variability and predictability.