Each month we feature specific Divisions of EGU and during the monthly GeoRoundup we put the journals that publish science from those Divisions at the top of the Highlights section. For May, we are not featuring any particular divisions, but an ensemble of all the highlights of this month instead. Atmospheric Chemistry and Physics Beyond discrete stratocumulus regimes: a ternary continuum of morphology reveals within-regime variability in cloud susceptibilities – 27 May 2026 Atmospheric Measurement Techniques Impact of spectral aerosol radiative forcing at the Izaña observatory during the August 2023 extreme wildfires – 13 May 2026 Biogeosciences Shoreline exposure controls teal carbon accumulation in boreal lakes – 28 May 2026 Climate of the Past Climate change drove Late Miocene to Pliocene rise and fall of C4 vegetation at the crossroads of Africa and Eurasia (Anatolia, Türkiye) – 12 May 2026 Cryptotephra in the East Antarctic Mount Brown South ice core – 29 May 2026 Earth System Dynamics Quantification of the influence of anthropogenic and natural factors on the record-high temperatures in 2023 and 2024 – 06 May 2026 Developing Guidelines for working with Multi-Model Ensembles in CMIP – 08 May Earth Surface Dynamics Coastal process understanding through automated identification of recurring surface dynamics in permanent laser scanning data of a sandy beach – 08 May 2026 First Alps-wide reconstruction of LGM glacial sediment transport enabled by GPU-accelerated particle tracking – 08 May 2026 Geoscience Communication Increasing earthquake awareness: seismo-at-school Switzerland – 21 May 2026 Geoscientific Model Development Love number computation within the Ice-sheet and Sea-level System Model (ISSM v4.24) – 18 May 2026 Hydrology and Earth System Sciences A novel classifier-guided ensemble framework for global terrestrial evapotranspiration estimates – 27 May 2026 Ocean Science The Scotland–Canada overturning array (SCOTIA): twenty years of meridional overturning in the subpolar North Atlantic – 08 May 2026 Modelling primary production: multitude of theories, or multitude of languages? – 11 May 2026 High-latitude eddy statistics from SWOT compared with in situ observations – 13 May 2026 Internal tides–cyclonic eddy interaction and intermodal energy pathways: evidence from 3 km NEMO-AMAZON36 simulations – 18 May 2026 Tide of the Time: Global tidal characteristics observed from in-situ measurements – 28 May 2026 SOIL Mineral-bound organic carbon exposed by hillslope thermokarst terrain: case study in Cape Bounty, Canadian High Arctic – 18 May 2026