Preprints
There are 6427 Preprints listed.
A Benchmark Dataset of Agricultural Weather Stations over the Contiguous United States for Evapotranspiration Applications
Published: 2026-01-17
Subjects: Environmental Monitoring, Environmental Studies, Geographic Information Sciences, Hydrology, Water Resource Management
Agricultural weather data are fundamental for the accurate estimate of evapotranspiration (ET), irrigation scheduling, and water-use accounting. In particular, reference ET provides a standardized atmospheric demand for water loss from a hypothetical well-watered grass (ETo) or alfalfa (ETr); however, weather stations may not adequately represent such climatic conditions. Weather data commonly [...]
The Future of EO-Enabled SDG 11.3.1 Monitoring Through Uncertainty-Aware Forecasting of Urban Land-Use Efficiency
Published: 2026-01-17
Subjects: Environmental Monitoring, Longitudinal Data Analysis and Time Series, Natural Resource Economics, Sustainability
Earth observation (EO) has become central to monitoring progress toward the Sustainable Development Goals (SDGs), particularly SDG Indicator 11.3.1, which assesses land-use efficiency (LUE) through the ratio of land consumption rate (LCR) to population growth rate (PGR). Current EO-based implementations remain predominantly retrospective and deterministic, relying on historical mappings of [...]
Benchmarking analog and ensemble-based seasonal forecasting strategies for water management in the Upper Rio Grande basin
Published: 2026-01-17
Subjects: Earth Sciences, Hydrology
In the southwestern US, declining runoff efficiencies driven by a warming climate have undermined the skill of seasonal water supply forecast (WSF) methods used for reservoir management by local to federal agencies. Seasonal water allocations are often based on deterministic inflow sequences, derived by matching historical streamflow traces (analogs) to statistical WSF volumes; yet model-based [...]
Filling the gaps between tide gauges: Demonstrating high-resolution seasonal high tide flooding predictions using NOAA’s Coastal Ocean Reanalysis
Published: 2026-01-17
Subjects: Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
High Tide Flooding (HTF) is a present and increasing hazard for coastal communities across the United States. NOAA provides HTF outlooks at U.S. tide gauges, however, many coastal communities lie relatively far from a tide gauge and therefore currently lack localized HTF guidance. In this study, we demonstrate an approach to generate spatially-continuous daily predictions of HTF at 400-500 m [...]
A pilot study exploring the effect of vehicular waste heat on personal heat exposure
Published: 2026-01-17
Subjects: Civil and Environmental Engineering
Understanding the causes of heat in various microclimates in cities is vital to improving human thermal comfort and health in outdoor spaces. This pilot study uses an experimental design to evaluate microclimate heat risk – including ambient air temperature (TA) and wet bulb globe temperature (WBGT) – and approximate personal heat exposure of people 1.5-3.0 meters (5-10 feet) away from idling [...]
Use of Low Impact Development Systems to Enhance Recharge using Stormwater in a Heavily Groundwater-Depleted Region of the Gulf Coast Aquifer
Published: 2026-01-17
Subjects: Civil Engineering, Environmental Engineering, Hydrology, Sustainability, Water Resource Management
Water resources in the Houston Metropolitan Area, otherwise known as Greater Houston, have been under enormous stress for decades due to an increase in population and uncertain climate conditions. Rapid urbanization has also increased impervious cover, leading to excess stormwater runoff. Implementing managed aquifer recharge (MAR) through the use of low impact development (LID) strategies can [...]
A Simple Model for Tidally Forced Standing Waves in a Submarine Canyon
Published: 2026-01-17
Subjects: Physical Sciences and Mathematics
Submarine canyons are recognized as energetic sites for internal tides and enhanced mixing, yet the mechanisms by which tidal forcing excites these motions remain poorly understood. To address this gap, we develop a simplified theoretical model that represents a canyon as a long, narrow rectangular box. The analysis reveals that the dominant wave modes in this idealized geometry are standing [...]
EVALUATION OF WIND ENERGY RESOURCE: A COMPARATIVE STUDY OF EAST RIDING OF YORKSHIRE AND CORNWALL COUNCILS, UNITED KINGDOM
Published: 2026-01-16
Subjects: Engineering, Physical Sciences and Mathematics
This study aimed to assess the wind energy potential in the United Kingdom, focusing on the East Riding of Yorkshire and Cornwall Councils. A comparative analysis was conducted by sampling two weather stations from each region to obtain and analyze wind characteristics. The annual energy yield for both regions was calculated over a four-year period. Data analysis involved frequencies, averages, [...]
Introducing Difference: from Euclidean Space to Geological Limits
Published: 2026-01-16
Subjects: Earth Sciences, Mathematics, Physical Sciences and Mathematics
The Lithotectonic Framework (LTF) provides a systematic approach to describing regional geology in terms of geological history. While LTF has been applied to vocabulary development and regional geological description, its theoretical foundations have remained undocumented. This paper introduces the Spatio-Temporal Framework (STF), which extends Euclidean geometry by adding 'difference' as a [...]
Evidence of low watershed resilience across the Western United States
Published: 2026-01-15
Subjects: Environmental Indicators and Impact Assessment, Environmental Monitoring, Sustainability, Water Resource Management
Vulnerable waters, including headwater streams and non-floodplain wetlands, are essential to watershed level resilience but notoriously difficult to measure over large spatial scales. Although individually small, vulnerable waters as a whole are integral in regulating hydrologic and biogeochemical processes. In the relatively small proportion of vulnerable waters that are continuously monitored, [...]
Computation of Regional Groundwater Budgets for the Virginia Coastal Plain Aquifer System
Published: 2026-01-15
Subjects: Physical Sciences and Mathematics
Computation of detailed groundwater flow budgets for subdivisions of Virginia’s Coastal Plain aquifer system has enabled quantification and more thorough understanding of groundwater flow within this important water resource. A zone budget analysis conducted on previously published groundwater models of the Virginia Coastal Plain and Virginia Eastern Shore shows that groundwater conditions vary [...]
Calcium promotes carbon rich grassland soils
Published: 2026-01-15
Subjects: Biogeochemistry
Dark colored grassland soils, known as Mollisols, are intensively farmed and exceptionally rich in organic matter, and hence have an important role in the carbon cycle. Elevated carbon storage in Mollisols may be facilitated by calcium (Ca) released by carbonate and silicate weathering. This synergy between carbon and Ca cycling has not been definitively quantified. To close this knowledge gap, [...]
Global sediment transport intermittency is set by river planform
Published: 2026-01-14
Subjects: Earth Sciences, Geomorphology, Hydrology, Sedimentology
Patterns of water and sediment flux in rivers are key to understanding landscape responses to environmental change. Quantifying water intermittency in rivers (from perennial to ephemeral) provides vital context for interpreting long-term hydrographs and flood frequency, yet controls on corresponding sediment intermittency are poorly understood due to measurement challenges. We present the first [...]
The Coupling Cloud: A community database of megathrust kinematic coupling models
Published: 2026-01-14
Subjects: Earth Sciences
Kinematic coupling models inverted from geodetic data are widely used to evaluate how slip deficit is distributed along subduction megathrusts during the interseismic period, and are central to earthquake and tsunami hazard assessment. Yet, existing coupling models differ widely in methodology and inputs, lack common community standards, and are scattered across publications and repositories. [...]
Generation of Random Geological Models Using Multi-Randomization for Machine Learning
Published: 2026-01-13
Subjects: Earth Sciences