Wikimpacts 1.0: a new global climate impact database based on automated information extraction from Wikipedia Natural Hazards and Earth System Sciences DOI 10.5194/nhess-26-2609-2026 4 June 2026 Climate extremes threaten society and ecosystems, making impact understanding critical. Wikimpacts 1.0 provides an automated pipeline processing Wikipedia texts with underexploited information on climate impacts, yielding comprehensive socio-economic impact data for 2726 climate events from 1034–2024. It offers broader storm-related impacts and finer spatial resolution than established databases, showcasing natural language processing's potential to advance climate impact data. Read more
From real-time to long-term source apportionment of PM10 using high-time-resolution measurements of aerosol physical properties: methodology and example application at an urban background site (Aosta, Italy) Atmospheric Measurement Techniques DOI 10.5194/amt-19-3625-2026 3 June 2026 RASPBERRY is a new method to identify aerosol emission sources using physical properties (particle size and light absorption) measured at high time resolution by cost-effective optical instruments, instead of labour-intensive chemical analyses. Applied over five years in Aosta, Italy, it identified six main sources – traffic, biomass burning, two types of secondary particles, desert dust, and local resuspension. Validation against chemical apportionment and real-time applications are presented. Read more
Arctic Weather Satellite assessment and assimilation at ECMWF Atmospheric Measurement Techniques DOI 10.5194/amt-19-3581-2026 2 June 2026 Satellite data used in weather forecast models needs to be of a very high quality. Previously, this has been delivered by bus-sized satellites. The new Arctic Weather Satellite shifts this paradigm, delivering high quality observations from a small satellite. Here we analyse the performance and test its impact with a state-of-the-art weather forecast model. It compares well to heritage instruments and has a positive impact on forecast skill. Read more
The TSUSY Database: a global database of historical tsunami events and a tsunami-occurrence criterion based on historical earthquakes Natural Hazards and Earth System Sciences DOI 10.5194/nhess-26-2415-2026 29 May 2026 Tsunamis can have devastating consequences, yet it remains challenging to identify which earthquakes generate them. This study presents a criterion for identifying tsunamigenic events based on numerical simulations, as well as a global database of tsunami simulations based on historical earthquakes. By comparing the results with historical records, this approach can improve tsunami identification and support tsunami warnings worldwide. Read more
Cryptotephra in the East Antarctic Mount Brown South ice core Climate of the Past DOI 10.5194/cp-22-1057-2026 29 May 2026 The ~300 m Mount Brown South ice core (MBS) was drilled in coastal East Antarctica in 2017-2018. Here, we combine atmospheric modeling, ice core chemistry, and eruption records to sample a ~20 m MBS companion core for volcanic ash. We identified two ash layers, geochemically correlated with eruptions of Mt. Erebus (1985) and Cerro Hudson (1991). This study proves long-range transport of ash to East Antarctica, validating MBS as an untapped record of high latitude Southern Hemisphere volcanism. Read more
Shoreline exposure controls teal carbon accumulation in boreal lakes Biogeosciences DOI 10.5194/bg-23-3637-2026 29 May 2026 Aquatic vegetated ecosystems are important for global carbon storage, but freshwater shorelines remain understudied. We found that the sedimentary organic carbon (SOC) stocks ranged from 0 to 40.8 kg m−2, with a large spatial variability. Large SOC stocks were found in sheltered areas, with the predominance of fine-grained sediments. In exposed areas, vegetation might also impact SOC accumulation. Accounting for shoreline exposure is crucial for improving regional carbon budget estimates. Read more
Stratospheric gravity waves in three high-resolution models and AIRS satellite observations Atmospheric Chemistry and Physics DOI 10.5194/acp-26-7607-2026 29 May 2026 Gravity waves are small-scale processes that drive the circulation in the middle and upper atmosphere. In this work, we assess 3 new high-resolution (3-5km horizontal resolution) models against satellite data. Generally, models capture the spatial patterns and represent stratospheric northern hemisphere mountain generated waves well. However, they still underestimate amplitudes globally and struggle with the representation of southern hemispheric convective waves. Read more
Tide of the Time: Global tidal characteristics observed from in-situ measurements Ocean Science DOI 10.5194/os-22-1681-2026 28 May 2026 Ocean tides are a critical component of the global climate system, influencing a wide range of geophysical processes. Tide gauges have been a valuable source for developing the theory of ocean tides and for understanding their variability. We provide updated and new insights on tidal properties using the Global Extreme Sea Level Analysis tide gauge dataset, intended to be useful to a range of applications, from navigation and fishing communities to ocean scientists and tidal experts. Read more
A novel classifier-guided ensemble framework for global terrestrial evapotranspiration estimates Hydrology and Earth System Sciences DOI 10.5194/hess-30-3283-2026 28 May 2026 Existing global evapotranspiration algorithms rely on sparse local measurements and each comes with its own strengths and weaknesses. Here, we proposed an ensemble framework that employed a machine learning system to dynamically select the most appropriate algorithm to be used across spatial and temporal scales, thus fully utilizing the distinct strengths of each method. In multi-scale validations, our framework exhibited enhanced extrapolation performance, stability, and interpretability. Read more
Beyond discrete stratocumulus regimes: a ternary continuum of morphology reveals within-regime variability in cloud susceptibilities Atmospheric Chemistry and Physics DOI 10.5194/acp-26-7193-2026 27 May 2026 We introduce a new way to describe marine low cloud morphologies as a continuous range rather than discrete types. Using this approach, we show that cloud brightness responses to changes in droplet concentrations vary strongly across cloud morphologies, but the overall effect is small. This suggests that marine cloud brightening may rely more on increasing cloud cover than on making existing clouds brighter. Read more
