The Geoengineering Model Intercomparison Project (GeoMIP) contribution to CMIP7 – description of new experimental protocols and preliminary results Geoscientific Model Development DOI 10.5194/gmd-19-8469-2026 11 September 2026 The Geoengineering Model Intercomparison Project is a coordinated international model intercomparison effort aiming to provide robust experimental protocols for simulations of various Solar Radiation Modification (SRM) methods. In this manuscript, we describe a list of novel experiments decided by the community, to be run by climate models to better understand sources of uncertainty in SRM. We also show and discuss some preliminary results from a few climate models. Read more
Imaging deep carbon stocks with complex electrical conductivity Biogeosciences DOI 10.5194/bg-23-6287-2026 11 September 2026 Understanding the role of soil in the storage of organic carbon is critical for a large number of environmental processes. Current practices rely on the drilling and analysis of samples, which is expensive, time consuming and destructive. Here we present a technique able to map soil organic carbon variability using measurements of the electrical properties of the subsurface without drilling. Our results advance soil management strategies to enhance carbon sequestration and storage. Read more
Evaluating surface mass balance variability from climate models using GPS Bedrock Vertical Time Series data The Cryosphere DOI 10.5194/tc-20-5099-2026 10 September 2026 Antarctic surface mass balance (SMB) is a source of major uncertainty in ice-sheet mass balance estimates, but its evaluation remains limited. We introduce a novel method using continuous, bedrock-fixed GPS vertical displacements as a spatially integrated constraint on low-frequency SMB variability over hundreds of kilometres. Applied across Antarctica, it reveals systematic, region-dependent differences with modelled SMB-driven displacements, guiding SMB model refinement. Read more
Cloud liquid water path at the North Slope of Alaska has minimal sensitivity to local meteorology in Arctic winter Atmospheric Chemistry and Physics DOI 10.5194/acp-26-12689-2026 8 September 2026 Liquid-containing Arctic clouds have a strong influence on surface temperature and sea ice extent in winter, but how weather conditions impact cloud cover remains a mystery. This study uses observations from northern Alaska to investigate this relationship. We find that, contrary to expectations, the amount of cloud liquid is remarkably insensitive to temperature, moisture, wind direction, and the large-scale atmospheric flow. Read more
Global hyper-resolution modeling of historical and future groundwater dynamics Earth System Dynamics DOI 10.5194/esd-17-1201-2026 7 September 2026 We simulated how global groundwater levels have changed in the past and how they might change in the future. By improving model accuracy and using hyper-resolution data, we can now see where water tables are falling or rising across the world at 1km resolution. These results help communities and decision-makers plan for more sustainable water use in a changing climate. Read more
Invited perspectives: Towards usable compound event research Natural Hazards and Earth System Sciences DOI 10.5194/nhess-26-4309-2026 7 September 2026 Impacts from extreme weather events may become more severe due to increased likelihood of compounding events under global warming, which challenge present day climate modelling and forecasting capacities. In this perspective we reflect on the usability of compound event research to bridge the gap between academic research and real-world applications. Read more
Natural disturbances from bark beetle outbreaks and windthrow increasingly affect Europe's most mature and carbon-rich forests Biogeosciences DOI 10.5194/bg-23-5983-2026 31 August 2026 Europe’s forests store vast amounts of carbon, but climate-driven disturbances are becoming more frequent. By combining satellite records with information on forest age and structure, we show that recent disturbances increasingly affect the oldest and most carbon-rich forests, particularly spruce forests in Central Europe. This emerging pattern puts long-accumulated carbon at risk and may reduce the long-term climate benefits provided by Europe’s forests. Read more
The impact of stochastic sea ice perturbations on seasonal forecasts Weather and Climate Dynamics DOI 10.5194/wcd-7-1593-2026 31 August 2026 Numerical weather forecasts of sea ice are unreliable, exhibiting an overly narrow range of plausible sea ice evolutions. Stochastic perturbations introduce randomness to the forecast in order to alleviate this by representing uncertainties in the representation of sea ice physics. We show that including such perturbations in a forecast model improves the reliability of sea ice forecasts, and furthermore results in improved seasonal forecasts of the northern European winter circulation. Read more
Saturation effect of background temperature and aridity on vegetation phenological sensitivity to urban warming Biogeosciences DOI 10.5194/bg-23-5943-2026 28 August 2026 Using satellite data from 293 Chinese cities, we tested how background climate shapes vegetation responses to urban warming. Urban heat advances spring growth 12 days and delays autumn aging nearly 10 days, yet responses saturate with extra warming. Dryness weakens and reverses growing‑season extension in dry inland zones. Temperature and moisture explain about 75 % spatial variation. Our results challenge the view that urban heat always lengthens growing seasons for climate‑adapted greening. Read more
Dune aurora: survey from a citizen science database Annales Geophysicae DOI 10.5194/angeo-44-855-2026 27 August 2026 Dune aurora is an intriguing phenomenon recently discovered thanks to citizen science. It is a dim, diffuse auroral form exhibiting wave-like stripes of brighter emission. We carry out the first statistical study of dune aurora, using 308 observation reports submitted to the Skywarden database by citizen scientists from Europe, North America, and Oceania. We find that dunes are an evening phenomenon, most often reported in March and October and associated with currents in the auroral atmosphere. Read more
