Preprints
There are 6211 Preprints listed.
Analysis of temperature anomalies using machine learning, numerical methods and statistical techniques in global and Nepal datasets.
Published: 2025-06-12
Subjects: Physical Sciences and Mathematics
This study analyzes temperature anomalies to compare Nepal’s local trends with global patterns using Berkeley Earth data. Techniques like regression, Gaussian fitting, interpolation, moving averages, Rossler attractors, and spiral graphs revealed cyclical and chaotic climate behaviors. Results show a strong link between Nepal’s climate trends and global patterns, influenced by its unique [...]
The geomorphological and sedimentological legacy of the historical Lake Lorsch within the Weschnitz floodplain (northeastern Upper Rhine Graben, Germany)
Published: 2025-06-11
Subjects: Earth Sciences, Geomorphology
The artificial historical Lake Lorsch (1474/79 to 1718/20 CE) in the northeastern Upper Rhine Graben (Germany) is known from various historical sources, e.g. for fish farming, as a significant anthropogenic imprint of the Weschnitz floodplain. Nevertheless, there have been no geomorphological and sedimentological investigations about the (quasi-)natural context for the creation of the lake, its [...]
From awareness to action: Applying Q Methodology to understand local government perspectives to deliver climate resilient WASH
Published: 2025-06-11
Subjects: International and Area Studies
Climate change presents significant threats to the sustainability of water, sanitation, and hygiene (WASH) systems, particularly in low- and middle-income countries (LMICs). However, adaptation efforts often overlook the perspectives of those tasked with implementing change at the local level. This study applies Q methodology to explore the subjective viewpoints of local government officials in [...]
Microbial dynamics in an intertrappean lake during the terminal phase of Deccan volcanism
Published: 2025-06-11
Subjects: Education, Life Sciences, Physical Sciences and Mathematics
Biogeochemical changes associated with Deccan volcanism and their potential link to the K/Pg extinction event are still debated in Palaeoclimate research. Contemporary terrestrial organosedimentary deposits are important archives for understanding the perturbation in the biogeochemical cycling during this critical episode in Earth's history. Here, we report an intertrappean lacustrine carbonate [...]
Quantifying sulfur speciation in magmatic-hydrothermal fluids
Published: 2025-06-11
Subjects: Chemistry, Earth Sciences, Geochemistry, Geology, Inorganic Chemistry, Natural Resource Economics, Physical Chemistry, Physical Sciences and Mathematics
Quantitative knowledge of sulfur speciation in the fluid phase is key to understanding sulfur degassing from magmas and its transfer along with metals by fluids across the lithosphere. Farsang and Zajacz(1) recently reported new sulfur speciation data using Raman spectroscopy measurements on aqueous H2SO4-NaCl(-KCl) solutions trapped as synthetic fluid inclusions in quartz at 875 °C and 2 kbar [...]
Enhancing daily precipitation reconstruction: An improved version of the reddPrec R package
Published: 2025-06-10
Subjects: Engineering, Physical Sciences and Mathematics
Reconstructing high-quality daily precipitation series is essential for climate studies, hydrological modeling, and environmental applications. This work presents a new version of reddPrec, a versatile and flexible R package designed to reconstruct precipitation datasets through standard quality control, gap-filling, and grid creation procedures. The update introduces greater flexibility in [...]
Confirming that Modern Global Warming is Predominantly Geomagnetically Driven and Seeking other Drivers by Employing Latitudinal bands.
Published: 2025-06-10
Subjects: Oceanography and Atmospheric Sciences and Meteorology
The hypothesis that most of modern warming is geomagnetically driven is tested and shown to be correct. Models employing single and multiple geomagnetic parameters including both North and South Dip Pole positions, Tilt and Dipole Strength are developed and tested. Pole movement with accompanying changs in Tilt and Dipole strength changes particle precipitation, changes cloud, lowers albedo [...]
Data-Driven Facies Prediction: A Comparative Study of Random Forest, XGBoost, SVM, CatBoost, and K-Means
Published: 2025-06-10
Subjects: Analysis, Earth Sciences, Geology, Sedimentology
Facies classification plays a critical role in characterizing subsurface heterogeneity and supporting effective reservoir development. Traditional methods, which often rely on core interpretation and manual log analysis, are limited by subjective interpretation and sparse data coverage. This study aims to improve facies prediction by comparing the performance of five machine learning models: [...]
Valuation of Ecosystem Services Amidst Land Use Land Cover Change Dynamics in Kedarnath Wildlife Sanctuary, Uttarakhand
Published: 2025-06-10
Subjects: Natural Resource Economics
The Kedarnath Wildlife Sanctuary, situated in Uttarakhand, India, is a critical hub of ecological diversity and ecosystem services. However, rapid land use and land cover (LULC) transitions in the region have raised concerns regarding the sustainability of these services. This study presents a comprehensive assessment and quantification of ecosystem services in response to LULC changes over a [...]
Assessing the Efficacy and Climate Resilience of Traditional Water Harvesting Systems in Jodhpur District, Rajasthan: A Geospatial and Hydrological Modeling Approach
Published: 2025-06-09
Subjects: Civil and Environmental Engineering, Engineering, Environmental Engineering, Environmental Sciences, Life Sciences
Traditional Water Harvesting Systems (TWHS) are critical for water security in arid regions like Jodhpur district, Rajasthan, India, yet their contemporary efficacy and climate resilience remain inadequately quantified. This study comprehensively assesses selected TWHS, primarily nadis and johads, by integrating geospatial analysis for inventory and characterization, hydrological modeling (SCS-CN [...]
A Method to Calculate the Centroid of Areas on a Sphere and its Application to Determining Geographic Centers
Published: 2025-06-08
Subjects: Physical Sciences and Mathematics
This study shows how a method of calculating the coordinates of the centroid of discrete points on a sphere can be generalized to determine the centroid of areas on a sphere by minimizing the surface integral of squared spherical distances. A quadratically convergent algorithm for calculating the coordinates of the centroid is presented. Equations are given to verify that the centroid so [...]
Extrapolation Approaches for Creating Comprehensive Measurement-Based Methane Emissions Inventories
Published: 2025-06-07
Subjects: Environmental Indicators and Impact Assessment, Environmental Monitoring, Oil, Gas, and Energy
Measurement-based methane emissions inventories are essential for U.S. oil and natural gas operators to track their progress toward emissions targets, demonstrate the impact of improved operational and monitoring practices, and enable the scientific community to monitor methane budgets at various scales. However, translating raw emission measurement data, whether from continuous monitoring [...]
Linked canyons and fans communicate through a migrating bedrock-alluvial transition
Published: 2025-06-07
Subjects: Earth Sciences, Geomorphology, Physical Sciences and Mathematics
The evolution of net-erosional fluvial landscapes is often treated separately from net-depositional fluvial landscapes, using different methods and different data input. Yet these landscapes are often tightly linked by means of a moving-boundary bedrock-alluvial transition. We consider a linked canyon-fan system in the setting of a Basin and Range province, basing our work loosely on Rainbow [...]
Storm Whisperers: Predicting Thunderstorms with Long Short-Term Heuristic Memory Model
Published: 2025-06-07
Subjects: Computer Sciences
Accurate thunderstorm prediction is essential for safeguarding public safety and optimizing resource management, particularly in increasingly unpredictable weather patterns. This study explores the use of Long Short-Term Memory (LSTM) neural networks enhanced with heuristic mechanisms as a cutting-edge method for predicting thunderstorm events. By leveraging the inherent ability of LSTMs to [...]
Ensemble methods for landslide susceptibility mapping: A review of machine learning and hybrid approaches
Published: 2025-06-07
Subjects: Engineering
Abstract: The assessment of landslide susceptibility holds significant importance in disaster risk reduction. This study comprehensively examines the current research on landslide susceptibility from two aspects: the steps involved in landslide susceptibility assessment and modeling methods. Initially, we retrieved pertinent research articles, published between 2014 and 2023, and focused on [...]