Preprints
There are 6976 Preprints listed.
Development of a Coupled Hydro-Economic Model to Support Groundwater Irrigation Decisions
Published: 2025-09-30
Subjects: Physical Sciences and Mathematics
Groundwater sustains global agriculture but faces significant pressure from overexploitation, threatening long-term water security. Achieving a balance between agricultural productivity and sustainable groundwater use requires decision-support tools that are both practical and robust. This study develops an accessible farm-level hydro-economic model that integrates groundwater dynamics with [...]
An Event-Based Framework for Estimating Annual Methane Emissions and Managing Emissions Data from Upstream Oil and Gas Facilities
Published: 2025-04-05
Subjects: Engineering, Physical Sciences and Mathematics
Accurate reporting of annual site-level methane emissions is increasingly required under emerging regulatory and voluntary frameworks in the oil and gas (O&G) sector. In this study, we present an event-based framework for estimating annual methane emissions from upstream O&G facilities. The framework applies the Emission Event Data Model (EEDM) to spatiotemporally aggregate multi-scale [...]
Google Earth Engine Approach in Monitoring of Mangrove Forest in Govatr Bay, on Oman Sea
Published: 2025-04-05
Subjects: Earth Sciences, Geography
This study investigates geomorphological changes influencing mangrove habitats along Iran's coastline using satellite photos to identify crucial sites for coastal management. Biogeomorphol-ogy helps to solve real-world problems, such as mangrove restoration and coastal management. This study explored the relationship between coastal mangrove habitats and local geomorpholo-gy in Govatr Bay by [...]
A New Fault Model for the 1933 Long Beach Earthquake, Long Beach Area, Southern California
Published: 2025-04-05
Subjects: Earth Sciences, Geology, Geophysics and Seismology, Physical Sciences and Mathematics
Newly identified thrust faults and their corresponding thrust sheets, combined with recent micro-earthquake epicenters, better explain anomalous rupture data observed during the 1933 Long Beach Earthquake than previous models based exclusively on Newport-Inglewood Fault Zone strike-slip faulting. A high-quality 45 km2 3D seismic dataset was recorded in 2017, centered along the Seal Beach [...]
Introduction of a nature-based sustainable technology to mitigate climate change-driven water pollution in rivers and lakes
Published: 2025-04-08
Subjects: Engineering
Climate change is intensifying water stress around the world by disrupting the water quantity and quality of surrounding rivers, lakes, and streams. Sustainable water management to adopt climate change and improve global water security needs to focus on technology and innovation. A decentralized, low-energy and sustainable approach to meet both the water quality and quantity demands requires for [...]
Phytoplankton blooms in the new Southern Ocean sea ice regime
Published: 2025-02-24
Subjects: Biogeochemistry, Geophysics and Seismology, Oceanography
Over the last decade, the Antarctic sea ice extent has recorded record highs and lows. The anomalous low in 2023 suggested a new reduced sea-ice state, with unknown impacts on phytoplankton blooms, including phenology and magnitude. Analysing both Biogeochemical (BGC) and Core Argo floats, we compare annual sea ice extent (SIE) anomalies and sea ice volume (SIV) to physical and biological [...]
dageo: Data Assimilation in Geosciences
Published: 2025-04-08
Subjects: Earth Sciences, Mining Engineering, Oceanography and Atmospheric Sciences and Meteorology, Other Engineering
Data Assimilation combines computer models with real-world measurements to improve estimates and forecasts of dynamical systems such as oceans, atmosphere, and subsurface reservoirs. The Python package dageo is a tool to apply data assimilation in geoscience applications. Currently, it encompasses the Ensemble Smoother with Multiple Data Assimilation (ESMDA) method and provides tools for [...]
Forecasting During Volcanic Crises
Published: 2025-04-08
Subjects: Earth Sciences
Forecasting during a volcanic crisis is vital to the preservation of life and mitigation of loss during eruption. Decisions on when, where and how to evacuate, where to send the evacuees, and when they can return, are all informed by forecasts of impending volcanic activity. We review input data and models that underlie short-term forecasts during an eruption crisis, software and tools applied, [...]
Volcano stratigraphy and mapping
Published: 2025-04-08
Subjects: Stratigraphy, Volcanology
Volcano-geologic mapping and stratigraphic reconstructions provide important information toward understanding patterns of edifice construction and destruction of volcanic systems, their eruptive histories and recurrence rates, and magmatic evolution and plumbing systems, all of which are required to make informed hazard assessments. Geologic mapping of volcanic terrains also provides context in [...]
Assessing Future Ice Shelf Collapse Vulnerability in the ISMIP6 Ensemble
Published: 2025-04-08
Subjects: Earth Sciences, Glaciology, Physical Sciences and Mathematics
Understanding the possibility of future ice shelf collapses similar to the Larsen B is critical for improving sea-level-rise projections due to the restraint on upstream flow that ice shelves provide. Prior research has provided a criterion for assessing the vulnerability of ice shelf to hydrofracture. We apply these calculations to the model ensemble results from the Ice Sheet Modeling [...]
Assessing the effectiveness of irrigator-driven groundwater conservation programs to drought: a case study of the northwestern Kansas Local Enhanced Management Areas
Published: 2025-04-08
Subjects: Agriculture, Hydrology, Natural Resources and Conservation, Natural Resources Management and Policy, Sustainability, Water Resource Management
Groundwater pumping for irrigation has led to declining groundwater levels in agricultural areas around the world, including the U.S. High Plains Aquifer. Here, we used a process-based crop model, AquaCrop, to assess the effectiveness of different irrigation management strategies during a synthetic multi-year drought. We focused on the Groundwater Management District 4 Local Enhanced Management [...]
Greenhouse Gas (GHG) Emissions Poised to Rocket: Modeling the Environmental Impact of LEO Satellite Constellations
Published: 2025-04-11
Subjects: Astrophysics and Astronomy, Earth Sciences, Environmental Sciences, Physics
The proliferation of satellite megaconstellations in low Earth orbit (LEO) represents a significant advancement in global broadband connectivity. However, we urgently need to understand the potential environmental impacts, particularly greenhouse gas (GHG) emissions associated with these constellations. This study addresses a critical gap in modeling current and future GHG emissions by developing [...]
How the Magnetic North Pole and Energetic Particle Precipitation Control Earth's Climate
Published: 2025-04-09
Subjects: Physical Sciences and Mathematics
The hypothesis that the position of the magnetic North Pole (Dip Pole) (latitude) ought to be very highly correlated with global temperature change on Earth has been tested and shown to be correct. The probability of such a correlation happening by chance is close to zero. Moreover, this has likely been the dominant climate driver for the last 2000 years. A Granger causality test shows Pole Shift [...]
Four-Decade Analysis of Fire Behavior in the Brazilian Caatinga Biome 1985-2023
Published: 2025-04-11
Subjects: Forest Management, Geographic Information Sciences, Natural Resources and Conservation, Physical and Environmental Geography, Remote Sensing
The Caatinga, unique in northeastern Brazil, has species adapted to the semi-arid climate. Recurrent fires put its biodiversity at risk, highlighting the need for urgent measures to protect this fragile ecosystem. This study analyzed four decades of fire behavior in the Caatinga biome (1985-2023) using data from the MapBiomas Fire project and spatial analysis, revealing a worrying dynamic of [...]
Impact of Marine Heatwaves and Coldwaves on CO2 in the South China Sea
Published: 2025-04-10
Subjects: Environmental Sciences, Oceanography and Atmospheric Sciences and Meteorology
Global warming is increasing the frequency and intensity of marine heatwaves (MHWs) in the South China Sea, while marine cold waves (MCWs) occur intermittently. Both phenomena influence the air-sea CO2 flux (FCO2) at the air-sea interface. This study uses inversion and reanalysis data, along with FCO2 diagnostic methods, to assess their impact on FCO2 in the South China Sea from 2003 to 2019. The [...]