Preprints
There are 4589 Preprints listed.
CO2 sensitivity studies under laboratory and outdoor conditions as contribution to climate change discussions
Published: 2024-05-02
Subjects: Engineering, Physical Sciences and Mathematics
The EU considers climate change as an existential threat and wants to reduce net greenhouse gas emissions by at least 55% by 2030 and down to 0% by 2050 within the "EU Green Deal" and economic growth should be decoupled from the use of energy resources. It therefore sees fighting climate change as one of the most important targets1. There is considerable dis-consensus about growing CO2 levels in [...]
Modeling of Harmful Algal Bloom Dynamics and Integrated Web Framework for Inland Waters in Iowa
Published: 2024-05-02
Subjects: Environmental Sciences
Harmful algal blooms (HABs) are one of the major environmental concerns, as they have various negative effects on public health, recreational services, ecological balance, wildlife, fisheries, microbiota, water quality, and economics. HABs are caused by many sources, such as water pollution based on agricultural activities, wastewater treatment plant discharges, leakages from sewer systems, [...]
Interpretable Quality Control of Sparsely Distributed Environmental Sensor Networks Using Graph Neural Networks
Published: 2024-05-02
Subjects: Artificial Intelligence and Robotics, Earth Sciences
Environmental sensor networks play a crucial role in monitoring key parameters essential for understanding Earth’s systems. To ensure the reliability and accuracy of collected data, effective quality control (QC) measures are essential. Conventional QC methods struggle to handle the complexity of environmental data. Conversely, advanced techniques such as neural networks, are typically not [...]
Controls on mesophotic carbonate facies and sediment distribution across the Maltese shelf, central Mediterranean Sea
Published: 2024-05-02
Subjects: Other Environmental Sciences, Sedimentology
Although ~20% of global carbonate occurs on extra-tropical shelves, our understanding of these depositional environments still lags far behind that of tropical carbonate platforms. The Maltese shelf in the central Mediterranean offers an opportunity to study in situ facies distribution in a light-dominated extra-tropical carbonate platform and the factors controlling them. The Maltese shelf [...]
The potential of terrestrial and aquatic molluscs for the temporal analysis of Deckenschotter deposits and younger Quaternary sediments from the Swiss Plateau
Published: 2024-05-02
Subjects: Earth Sciences, Geology, Geomorphology, Paleobiology, Paleontology, Physical Sciences and Mathematics, Sedimentology, Soil Science, Stratigraphy, Terrestrial and Aquatic Ecology
A critical appraisal of water table depth estimation: Challenges and opportunities within machine learning
Published: 2024-05-02
Subjects: Applied Statistics, Hydrology
Fine-resolution spatial patterns of water table depth (WTD) can inform the dynamics of groundwater-dependent systems, including ecological, hydrological, and anthropogenic systems. Generally, a large-scale (e.g., continental or global) spatial map of static WTD can be simulated using either physically-based (PB) or machine learning-based (ML) models. We construct three fine-resolution (500 m) ML [...]
GeoAI and the Future of Spatial Analytics
Published: 2024-05-01
Subjects: Computer Sciences, Earth Sciences, Environmental Sciences, Environmental Studies, Geography, Library and Information Science, Physical Sciences and Mathematics, Social and Behavioral Sciences
This chapter discusses the challenges of traditional spatial analytical methods in their limited capacity to handle big and messy data, as well as mining unknown or latent patterns. It then introduces a new form of spatial analytics – geospatial artificial intelligence (GeoAI) - and describes the advantages of this new strategy in big data analytics and data-driven discovery. Finally, a [...]
Integrating Vision-Based AI and Language Models for Real-Time Water Pollution Surveillance
Published: 2024-05-01
Subjects: Electrical and Computer Engineering, Engineering
Water pollution has become a major concern in recent years, affecting over 2 billion people worldwide, according to UNESCO. This pollution can occur naturally, such as through algal blooms, or it can be man-made when toxic substances are released into water bodies like lakes, rivers, springs, and oceans. To address this issue and monitor surface-level water pollution in local water bodies, an [...]
Study on the Assessment of the Development Level of Digital Economy in the Yellow River Basin Economic Zone and the Evolution of Time and Space
Published: 2024-05-01
Subjects: Statistics and Probability
Based on the Statistical Classification of the Digital Economy and Its Core Industries (2021) and considering the characteristics of the Yellow River Basin Economic Belt, this paper selects 25 secondary indicators from 5 dimensions (digital infrastructure, digital industrialization, industrial digitization, digital innovation and agricultural modernization). A scientific and practical evaluation [...]
SWOT Data Assimilation with Correlated Error Reduction: Fitting Model and Error Together
Published: 2024-05-01
Subjects: Oceanography, Oceanography and Atmospheric Sciences and Meteorology
The Surface Water Ocean Topography (SWOT) satellite mission provides high-resolution two-dimensional sea surface height (SSH) data with swath coverage. However, spatially correlated errors affect these SSH measurements, particularly in the cross-track direction. The scales of errors can be similar to the scales of ocean features. Conventionally, instrumental errors and ocean signals have been [...]
Application of Large Language Models in Developing Conversational Agents for Water Quality Education, Communication and Operations
Published: 2024-05-01
Subjects: Engineering
The rapid advancement of Large Language Models (LLMs), such as ChatGPT, has opened new horizons in the field of Artificial Intelligence (AI), revolutionizing the way we can engage with and disseminate complex information. This paper presents an innovative application of ChatGPT in the domain of Water Quality (WQ) management, through the development of an AI Hub. The Hub encompasses a suite of [...]
Is Net Zero Necessary? Meeting the Paris Agreement Temperature Target with 39% Global Emissions Reductions by the 2070s
Published: 2024-04-30
Subjects: Physical Sciences and Mathematics
Global Carbon Project (GCP) data shows that natural processes have been sequestering atmospheric CO2 on a yearly basis in proportion to how much the atmospheric CO2 concentration has risen above pre-Industrial levels, the so-called CO2 “sink rate”. Here it is argued that the future trajectory of the sink rate has not been adequately addressed, which has led to overestimation of future atmospheric [...]
Nurturing a new industry rooted in geoscience: stakeholder insights on minewater thermal in Scotland.
Published: 2024-04-30
Subjects: Engineering, Social and Behavioral Sciences
Heat decarbonisation is crucial for climate action and to transition towards a sustainable society. Abandoned, flooded mines can be used to provide low-carbon heating and cooling for buildings or as thermal energy storage for district heating networks. Despite the plentiful potential resource that legacy mining infrastructure offers, the current utilisation of minewater thermal resources in the [...]
Carbonate clumped isotope values compromised by nitrate-derived NO2 interferent
Published: 2024-04-30
Subjects: Earth Sciences, Geochemistry
∆47 based clumped isotope thermometry has enabled reconstruction of Earth’s surface temperatures independent of the source of oxygen within the carbonate. It has been postulated that carbonate samples can contain contaminants that cause isobaric interferences, compromising measured ∆47 values and reconstructed temperatures. The exact nature of contaminants and isobaric interferents, however, [...]
The linked complexity of coseismic and postseismic faulting revealed by seismo-geodetic dynamic inversion of the 2004 Parkfield earthquake
Published: 2024-04-26
Subjects: Physical Sciences and Mathematics
Several regularly recurring moderate-size earthquakes motivated dense instrumentation of the Parkfield section of the San Andreas fault, providing an invaluable near-fault observatory. We present a seismo-geodetic dynamic inversion of the 2004 Parkfield earthquake, which illuminates the interlinked complexity of faulting across time scales. Using fast-velocity-weakening rate-and-state friction, [...]