Flood risks to the financial stability of residential mortgage borrowers: an integrated modeling approach Natural Hazards and Earth System Sciences DOI 10.5194/nhess-26-675-2026 30 January 2026 Uninsured flood damage can destabilize household finances, particularly when access to affordable credit is limited. Across seven floods in North Carolina, 66% of damage was found to be uninsured. Among affected mortgage borrowers, 32% lacked sufficient income or collateral to finance repairs through home equity-based borrowing, making their recovery uncertain. These findings suggest that uninsured flood damage poses a serious and under-recognized threat to residential mortgage borrowers. Read more
Assessment of the Cape Blanc (northwest Africa) upwelling ecosystem response to recent climate change, using wavelet analyses on dinoflagellate cyst export Biogeosciences DOI 10.5194/bg-23-831-2026 29 January 2026 This study examined the cycle variability in records of a plankton group remnant (dinoflagellate cysts), atmospheric, and oceanic factors off Cape Blanc, Northwest Africa. The result showed changes in the cycles of the plankton, upwelling winds, and Saharan dust records from 2003 to 2020. These changes were divided into three phases, coinciding with changes in the plankton assemblage. Our results showed that local climate change can influence the dynamics and composition of marine ecosystems. Read more
Operational numerical weather prediction with ICON on GPUs (version 2024.10) Geoscientific Model Development DOI 10.5194/gmd-19-755-2026 27 January 2026 The ICON climate and numerical weather prediction model was fully ported to Graphical Processing Units (GPUs) using OpenACC compiler directives, covering all components required for operational weather prediction. The GPU port together with several performance optimizations led to a speed-up of 5.6× when comparing to traditional Central Processing Units (CPUs) . Thanks to this adaptation effort, MeteoSwiss became the first national weather service to run the ICON model operationally on GPUs. Read more
A survey of snow growth signatures from tropics to Antarctica using triple-frequency radar observations Atmospheric Chemistry and Physics DOI 10.5194/acp-26-1249-2026 27 January 2026 Despite the increasing complexity of snow microphysics schemes employed in numerical models, whether the dominant snow microphysical process is reasonably identified remains an open question. This study using unprecedented triple-frequency radar observations for the first time unravels the key snow growth processes over diverse geographies. The unique cross-continental datasets from triple-frequency campaigns shed new insights for model evaluation and future satellite missions. Read more
Review article: Social media for managing disasters triggered by natural hazards: a critical review of data collection strategies and actionable insights Natural Hazards and Earth System Sciences DOI 10.5194/nhess-26-215-2026 27 January 2026 This paper critically reviews 250 studies (2010–2023) on how social media are used to manage disasters triggered by natural hazards. Supported by a newly created Social Media Literature Database, it identifies trends, data collection and analysis strategies, actionable information types, and major research gaps. Best practices are proposed for community use of social media during disasters and for researchers seeking to enhance its integration into disaster management and resilience strategies. Read more
Impact on cloud properties of reduced-sulphur shipping fuel in the Eastern North Atlantic Atmospheric Chemistry and Physics DOI 10.5194/acp-26-1041-2026 26 January 2026 The amount of sunlight reflected by marine boundary layer clouds in the Eastern North Atlantic does not change due to a decrease in aerosol caused by reduced sulphur in shipping fuel because adjustments to liquid water path offset the decease in cloud droplet number concentration. Read more
High resolution monthly precipitation isotope estimates across Australia from machine learning Hydrology and Earth System Sciences DOI 10.5194/hess-30-289-2026 26 January 2026 We used a random forest approach to produce estimates of monthly precipitation stable isotope variability from 1962–2023, at high resolution across the entire Australian continent. Comprehensive skill and sensitivity testing shows that our random forest models skilfully predict precipitation isotope values in places and times that observations are not available. We make all outputs freely available, facilitating use in fields from ecology and hydrology to archaeology and forensic science. Read more
Quantifying the time of emergence of the anthropogenic signal in the global land carbon sink Biogeosciences DOI 10.5194/bg-23-767-2026 26 January 2026 We study when anthropogenic signal becomes detectable in the global land carbon sink, which has risen since the 1950s due to CO₂ fertilization and mid- to high-latitude warming. The signal emerges earlier at the global than at regional scales. Future scenarios (2016–2100) take longer to detect than the historical period (1851–2014) because the signal is weaker relative to larger natural variability. Removing circulation-induced variability with dynamical adjustment shortens the detection time. Read more
Emerging Mineral Dust Source in ’A’ą̈y Chù’ Valley, Yukon, Canada Poses Potential Health Risk via Exposure to Metal and Metalloids Enriched in PM10 and PM2.5 Size Fractions Atmospheric Chemistry and Physics DOI 10.5194/acp-26-1321-2026 26 January 2026 Glacial sediment of the ’A’ą̈y Chù’ Valley in Yukon, Canada is exposed to strong winds, and consequently, has become a significant mineral dust source. Mineral dust is known to have an impact on human health, partly due to various metals it contains, with the size of the particles also being an important factor. The goal of this study was to determine the concentration of various metals in the dust, how this relates to dust size, and whether air quality standards were surpassed. Read more
A novel laser-based spectroscopic method reveals the isotopic signatures of nitrous oxide produced by eukaryotic and prokaryotic phototrophs in darkness Biogeosciences DOI 10.5194/bg-23-497-2026 22 January 2026 We present a new method for the accurate laser-based analysis of N2O isotopes. For the first time, we measured the Site Preference-N2O signatures of pure cultures of microalgae and cyanobacteria. Our study is a first step to ultimately develop process-specific N2O monitoring from aquatic ecosystems. Further research is now needed to determine the occurrence and significance of N2O emissions from microalgae and cyanobacteria from aquatic ecosystems. Read more
