EarthArXiv @eartharxiv@qoto.org

Sustained Decline of Annual Snow Cover Area in the Sikkim Himalaya (1987–2025): Multi-Sensor Remote Sensing on Google Earth Engine, Machine Learning, and Projections to 2100
https://doi.org/10.31223/X51R22 #Climate #Glaciology #Hydrology #PlanetaryGlaciology #PlanetaryHydrology #RemoteSensing #SnowCoverArea;NormalisedDifferenceSnowIndex;EasternHimalaya;Sikkim;Landsat;Sentinel-2;GoogleEarthEngine;Mann–kendallTrend;MachineLearning;FutureProjections

High-Alkalinity Algal Cultivation with Direct Air Capture: An Economic Feasibility Analysis
https://doi.org/10.31223/X5JN32 #Engineering #AlgalBiofuels #HighAlkalinityCultivation #Techno-economicAnalysis(tea) #LifeCycleAssessment(lca)

Rules-Based Systems Modeling for Hydropower Forecasting in Multi-Objective Reservoir Systems: Application to California's Central Valley Project
https://doi.org/10.31223/X5PF6C #CivilAndEnvironmentalEngineering #Engineering #EnvironmentalEngineering #CentralValleyProject #Hydropower #Calfews #FinancialRisk

Learning unresolved coastal dynamics in hydrodynamic models
https://doi.org/10.31223/X5T47W #FluidDynamics #Oceanography #CoastalExtremes #StormSurge #BiasCorrection

Control of natural hazard events through emergency landscaping
https://doi.org/10.31223/X52N2B #Geomorphology #NatureAndSocietyRelations #PhysicalAndEnvironmentalGeography #NaturalHazards #Wildfires #Flooding #CoastalStorms #VolcanicEruptions #Human-environmentalCoupledSystems

Making a difference takes time: assessing the impact of Colombian public land acquisitions on forest cover in the Andes
https://doi.org/10.31223/X56F61 #EnvironmentalStudies #GeographicInformationSciences #HumanGeography #NatureAndSocietyRelations #RemoteSensing #PublicLandAcquisitions #ForestCover #RigorousImpactEvaluation #ColombianAndes

How Do Discrete Global Grid Systems Actually Perform? A Systematic Benchmark Across Geometry, Computation and Relational Joins
https://doi.org/10.31223/X5B47J #ComputerAndSystemsArchitecture #DatabasesAndInformationSystems #EarthSciences #GeographicInformationSciences #SoftwareEngineering #SpatialScience #Dggs #DiscreteGlobalGridSystems #Benchmark #SpatialJoin #SpatialDatabases #RelationalDatabase

Detecting and Explaining Persistent Road Underdevelopment in Greater Accra Region Using Multi-Temporal Geospatial Data and Machine Learning
https://doi.org/10.31223/X5FZ1G #Engineering #PhysicalSciencesAndMathematics #RoadSurfaceClassification #PersistentInfrastructureUnderdevelopment #GeospatialMachineLearning #SpatialClustering.

Recent intensification of eastern Pacific ENSO is unprecedented across the last millennium
https://doi.org/10.31223/X5KN20 #OceanographyAndAtmosphericSciencesAndMeteorology #Enso #Coral #Galapagos #ClimateVariability

When Irrigation Cannot Keep Pace: Aridification, Crop Composition, and the Spatial Concentration of Agricultural Water Use Efficiency Decline in Central Chile
https://doi.org/10.31223/X5QF59 #BioresourceAndAgriculturalEngineering #WaterUseEfficiency #Megadrought #Aridification #Spei #Chile #Npp/et #CropComposition

Challenges with Developing a Measurement-Based Basin Methane Intensity Estimate: A Case Study from the Haynesville
https://doi.org/10.31223/X5V48K #EnvironmentalIndicatorsAndImpactAssessment #EnvironmentalMonitoring #Oil,Gas,AndEnergy #Methane #MethaneIntensity #Measurement-informedInventory #GreenhouseGasInventory #OilAndGas #HaynesvilleBasin #MethaneIntensity #Measurement-basedInventory #GreenhouseGasInventory #OilAndGas #HaynesvilleBasin

Increasing lifetime exposure to extreme fire weather under climate change in Europe
https://doi.org/10.31223/X5ZZ0R #EarthSciences #FireWeather #FireWeatherIndex #LifetimeExposure #Projections #Europe #Portugal

Reduced geomagnetic shielding increased UV-B radiation at Earth’s surface during the Laschamps Event
https://doi.org/10.31223/X53N31 #AstrophysicsAndAstronomy #AtmosphericSciences #Biochemistry #Biogeochemistry #Biology #EarthSciences #EcologyAndEvolutionaryBiology #EnvironmentalChemistry #EnvironmentalSciences #Geology #GeophysicsAndSeismology #LifeSciences #OceanographyAndAtmosphericSciencesAndMeteorology #OtherLifeSciences #Paleobiology #PhysicalAndEnvironmentalGeography #PhysicalSciencesAndMathematics #PlanetaryGeochemistry #PlanetaryGeology #PlanetaryGeophysicsAndSeismology #PlanetarySciences #SocialAndBehavioralSciences #StatisticsAndProbability #SurfaceUv-bRadiation #Geodynamo #LaschampsExcursion #Pollen #OzoneLayer

Direct quantification of solar-induced chlorophyll fluorescence using compact solar-blind optical radiometers
https://doi.org/10.31223/X57B69 #Biogeochemistry #EarthSciences #EnvironmentalMonitoring #EnvironmentalSciences #Optics #PhysicalSciencesAndMathematics #Physics #Solar-inducedChlorophyllFluorescence #Sif #Photosynthesis #ProximalRemoteSensing #Solar-blindRadiometer #Fabry-perotInterferometer #AtmosphericOxygen

Building a climate resilient health system: Lessons from Health National Adaptation Planning (H-NAP) in Uganda
https://doi.org/10.31223/X5C49M #PublicHealth #Adaptation #ClimateChange #Climate-resilientHealthSystems #HealthNationalAdaptationPlan #HealthSystems #Low-resourceSettings #PolicyProcess #Uganda

Climate Change Driven Disruptions in Health Service Uptake and Gender Role Inequities in SubSaharan Africa: A Scoping Review
https://doi.org/10.31223/X5GV1R #EnvironmentalSciences #Climate #Health #Gender #Sub-saharanAfrica

Towards Prospective Disaster Risk Management: Mapping Multi-hazard Urban Risk Dynamics Driven by Evolving Exposure and Vulnerability via Earth Observation
https://doi.org/10.31223/X5MN42 #CategoricalDataAnalysis #CivilAndEnvironmentalEngineering #CivilEngineering #Engineering #EnvironmentalMonitoring #GeographicInformationSciences #HumanGeography #OtherComputerSciences #PhysicalAndEnvironmentalGeography #RemoteSensing #RiskAnalysis #SpatialScience #StructuralEngineering #Spatiotemporal #Multi-hazard #ProspectiveRisk #Spatiotemporal #Exposure #PhysicalVulnerability #Cities #Neighbourhood

Integrated Triassic sediment routing along eastern Gondwana (Australia)
https://doi.org/10.31223/X5W498 #PhysicalSciencesAndMathematics #DetritalZircon #Provenance #SedimentRouting #BowenBasin #Triassic #Gondwana #Provenance #SedimentRouting #BowenBasin #Triassic #Gondwana

Towards Prospective Disaster Risk Management: Mapping Multi-hazard Urban Risk Dynamics Driven by Evolving Exposure and Vulnerability via Earth Observation
https://doi.org/10.31223/X5MN42 #CategoricalDataAnalysis #CivilAndEnvironmentalEngineering #CivilEngineering #Engineering #EnvironmentalMonitoring #GeographicInformationSciences #HumanGeography #OtherComputerSciences #PhysicalAndEnvironmentalGeography #RemoteSensing #RiskAnalysis #SpatialScience #StructuralEngineering #Spatiotemporal #Multi-hazard #ProspectiveRisk #Spatiotemporal #Exposure #PhysicalVulnerability #Cities #Neighbourhood

Intensifying Seismicity beneath Mount Teide: Assessing the Probability of an Imminent Eruption on Tenerife
https://doi.org/10.31223/X5RB6Z #GeophysicsAndSeismology #Volcanology #Seismicity #VolcanicUnrest #Teide #Tenerife