The COMPASS project recently released a set of “Guidelines for compound extremes modelling in current and future climates”.
Compound extremes have complex spatiotemporal dynamics that must be accurately captured to model their impacts accurately. This report presents an inventory of datasets (including global and continental) and introduces modelling workflows for characterizing compound extremes in current and future climates, i.e. modelling chains for each compound event type. It contributes to the COMPASS project’s objective of improving hazard modeling of compound extremes with sufficient accuracy at the local scale.
The report focuses on the following compound extreme events: compound pluvial, fluvial and coastal flooding either from tropical cyclones or from winter storms, compound coastal flooding and windstorms from extra-tropical cyclones, hydrological drought and saltwater intrusion and compound heatwaves with droughts.
The following elements are elaborated in the report:
- Overview of the important processes involved in the considered compound extremes. Presentation of the conceptual workflows, or modelling chains applied in COMPASS and that can be used to translate climate data into hazard information, along with a discussion on uncertainties and points of attention to consider that can impact compound event hazard modelling.
- Inventory of state-of-the-art large-scale datasets that can be used for the modelling of these hazards in current and future climates. This includes relevant climate datasets that can be used either to model the observed event or alternative realization of this event, but also general static datasets used for the modeling of specific hazards at continental to global scales.
- Explicit requirements related to each COMPASS Use Case concerning specific datasets and models that will be used in the hazard modelling.
More information can be found in the following COMPASS project Deliverable:
Aleksandrova, N., Vertegaal, D., Couasnon, A., Perks, R., Cotterill, D. Vogel, M., Jack, C., Paprotny, D., Terefenko, P., Śledziowski, J. (2024): Guidelines for compound extremes modelling in current and future climates. Horizon Europe project COMPASS. Deliverable D1.1.
