Preprints
Filtering by Subject: Oceanography and Atmospheric Sciences and Meteorology
Nondimensional parameter regimes of Arctic ice keel-ocean flow interactions
Published: 2025-10-24
Subjects: Oceanography and Atmospheric Sciences and Meteorology
Sea ice keels modulate upper-ocean momentum and mixing through internal wave (IW) generation, yet their effects are difficult to represent in climate models because their spatio-temporal scales are smaller than those of climate models and difficult to study in idealized simulations because geometry, forcing, and stratification span a large parameter space. We construct a compact description of [...]
Probabilistic interpolation of crowdsourced meteorological data for higher-resolution gridded estimates of surface air temperature
Published: 2025-10-23
Subjects: Applied Statistics, Climate, Engineering, Environmental Engineering, Meteorology, Oceanography and Atmospheric Sciences and Meteorology, Statistical Models
Crowdsourced air temperature data from networks like Weather Underground offer dense spatial coverage and are increasingly used to study the canopy urban heat island (CUHI) effect. However, these observations are noisy: siting conditions, environmental interference, and sensor failures introduce spatially and temporally varying bias. This complicates interpolation, limiting our ability to [...]
A Comparative Evaluation of Advanced Urban Data Methods in WRF
Published: 2025-10-18
Subjects: Atmospheric Sciences, Fluid Dynamics, Meteorology, Oceanography and Atmospheric Sciences and Meteorology
Urban parameterization is critical for accurately simulating near-surface temperature and the Urban Heat Island (UHI) effect in WRF. In this study, we compare three distinct approaches—W2W (a Python package integrating WUDAPT LCZ data), WRFUP (a Python package leveraging global high-resolution datasets), and a LiDAR-based parameterization—during the August, 2023 heatwave in Grenoble, France. Our [...]
Evaluating Urban Heat Adaptation Strategies for Extreme Heatwaves in Complex Terrain: A Case Study of Grenoble, France
Published: 2025-10-18
Subjects: Atmospheric Sciences, Climate, Fluid Dynamics, Meteorology, Oceanography and Atmospheric Sciences and Meteorology, Other Oceanography and Atmospheric Sciences and Meteorology, Physics
Urban heat adaptation strategies are critical for mitigating the impacts of ex- treme heat events in cities, particularly as climate change exacerbates their intensity and frequency. This study evaluates a set of adaptation strategies during the 2023 heatwave in Grenoble, France, using the WRF model with the BEP+BEM urban canopy scheme. Eight scenarios are simulated, including increased [...]
Radiogenic Sr-Nd-Pb isotope behavior in different grain-sized fine lithic materials during basalt weathering
Published: 2025-10-15
Subjects: Atmospheric Sciences, Climate, Earth Sciences, Geochemistry, Geology, Geomorphology, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Sedimentology, Stratigraphy
Radiogenic isotopes are widely used as sediment provenance tracers; however, their weathering response has not been fully established. This study investigates the weathering sensitivity of Sr-Nd-Pb isotopes in fine lithic fractions (FLF; grain size <2 μm, <5 μm, and <20 μm) capable of long-range transport. Geochemical and isotope compositions have been measured in the physicochemically [...]
A Collaborative Assessment of Coastal Ocean Acidification Monitoring in Maine & Standard Operating Procedures and Best Practices for the Collection of Continuous pH Data in Coastal Marine Environments
Published: 2025-10-15
Subjects: Earth Sciences, Environmental Monitoring, Oceanography and Atmospheric Sciences and Meteorology
The ‘Sensor Squad’ of the Maine Ocean Climate Collaborative is the product of a 2023 Maine Coastal and Marine Climate Action Fund grant to conduct “A two-year pilot project designed to address and overcome technological barriers to ocean acidification data collection, develop protocols to elevate quality assurance and ensure comparable data, and meet regularly to discuss project results and data [...]
A Field Study on Background Radiation Variability with Elevation in Eastern Nepal
Published: 2025-10-03
Subjects: Earth Sciences, Environmental Sciences, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics, Physics
This research investigates how environmental radioactivity varies with altitude in the diverse landscapes of Eastern Nepal. Employing two calibrated Geiger–Müller (GM) counters, background radiation was recorded as counts per minute (cpm) across selected sites in the districts of Dhankuta, Panchthar, Taplejung, and Ilam. Data were geo- referenced using GPS to correlate radiation levels with [...]
Accessible Climate and Impact Model Output for Studying the Human and Environmental Impacts of Nuclear Conflict
Published: 2025-10-03
Subjects: Agriculture, Earth Sciences, Environmental Sciences, Oceanography and Atmospheric Sciences and Meteorology
Nuclear winter refers to the suite of physical and biological consequences that may follow nuclear conflict, particularly the cooling and darkening of Earth’s surface due to black carbon soot in the upper atmosphere. While the associated changes in temperature, precipitation, and food system productivity have been the subject of climate modeling for decades, the outputs of models used to project [...]
Paleoecology indicates wave climate as key factor in coral reef development
Published: 2025-09-24
Subjects: Climate, Earth Sciences, Ecology and Evolutionary Biology, Environmental Sciences, Geology, Geomorphology, Oceanography and Atmospheric Sciences and Meteorology, Stratigraphy
The Last Interglacial (∼125,000 years ago) experienced global temperatures warmer than today, making it a natural analog for future climate scenarios. Contemporary coral reefs preserve ecological signals that offer valuable insights into past climate dynamics. Here, we examine the fossil reefs of Aruba, Bonaire, and Curaçao to reconstruct wind and wave conditions during this period. While modern [...]
Open ocean biogeochemical impacts of extreme terrestrial precipitation
Published: 2025-09-24
Subjects: Oceanography and Atmospheric Sciences and Meteorology
Extreme events reshape ocean ecosystems with significant implications for nutrient and carbon cycling. Here, we demonstrate that flooding on land can be a significant driver of biogeochemical variability in the open ocean, even in relatively dry climates. Using satellite observations, in situ measurements, and Lagrangian particle tracking, we present evidence that freshwater discharge from [...]
Evaluating the potential of SMART subsea cable pressure sensors to constrain Subpolar North Atlantic circulation variability through Observing System Simulation Experiments
Published: 2025-09-17
Subjects: Oceanography and Atmospheric Sciences and Meteorology
Bolstering global ocean observing infrastructure is critical for understanding, quantifying, and predicting Earth's climate variability and change. The emerging SMART (Science Monitoring And Reliable Telecommunications) Subsea Cables present an opportunity to acquire high-frequency, seafloor-based observations of ocean variables, encouraging assessment of their value prior to deployment. We [...]
Tropical cyclone risk to global electricity supply
Published: 2025-09-11
Subjects: Civil and Environmental Engineering, Oceanography and Atmospheric Sciences and Meteorology, Physical and Environmental Geography, Power and Energy, Risk Analysis
To analyse the risks from Tropical Cyclones (TC) to electricity supply, we have combined a large ensemble of TC simulations with a spatial model of power networks and people served, for the entire TC belt globally. The model of electricity power failure, measured in terms of population disrupted, was calibrated against nighttime lights satellite imagery of historic TC events. Use of spatially [...]
Added value of a priori bias correcting dynamically downscaled data for application to species distribution models - a case study for coastal British Columbia
Published: 2025-09-11
Subjects: Oceanography and Atmospheric Sciences and Meteorology
Predicting changes in species distributions under climate change relies on high-quality climate projections. In this case study of coastal British Columbia, we prepare and evaluate two sets of climate data - a priori bias corrected and non bias corrected dynamically downscaled historical projections of Community Earth System Model 2 simulations. We compare these datasets with downscaled ERA5 [...]
Relation of Atlantic tropical cyclone activity with observed and predicted ENSO indices
Published: 2025-09-08
Subjects: Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
El Niño-Southern Oscillation (ENSO) influences global climate variability, including Atlantic tropical cyclone activity. The Niño-3.4 index has long been used to characterize ENSO. However, new ENSO indices have been proposed in recent years. Here, in the context of Atlantic tropical cyclone activity, we compared Niño-3.4 to three modern ENSO indices: the relative Niño-3.4 index, the ENSO [...]
Some new Models of Earth’s Temperature Anomaly across various Epochs Predicting Present Warming with Ice Age Validity Testing and a Data set Bias examination.
Published: 2025-08-31
Subjects: Earth Sciences, Environmental Sciences, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
The need for methods to assess earth’s temperature anomaly are briefly discussed together with shortcomings of existing climate models. The geomagnetic or Pole shift method of climate sensitivity is briefly reviewed. The hypothesis that the previous two warm periods shared a common driver is tested and proven. Granger causality tests have been made and indicate that Pole Shift is the driver of [...]