Preprints
Search for science and technology (46 results)
What triggers individual climate actions in different neighbourhoods? Individual, collective, cultural, and socio-structural factors
Published: 2024-04-25
Subjects: Environmental Studies
This paper takes a multi-perspective approach to understand drivers and barriers of climate action on the neighbourhood level in a selection of European neighbourhoods. The starting point for the analysis is the assumption that actions on the level of citizens to protect the climate are most motivating and promising, when conducted jointly within established social systems like neighbourhoods. [...]
THE STATUS OF NOISE POLLUTION OF SUST CAMPUS, SYLHET, BANGLADESH: A GIS-BASED NOISE MAPPING
Published: 2024-04-24
Subjects: Public Health
This study investigates the status of noise pollution at Shahjalal University of Science and Technology (SUST) campus in Sylhet, Bangladesh, employing a GIS-based approach to map and analyze noise levels across different areas of the campus. The research was motivated by the growing concern over environmental noise as a public health issue, particularly in educational settings, where it can [...]
Moist Internally Cooled Convection
Published: 2024-04-17
Subjects: Atmospheric Sciences
The response of clouds and moist-convective processes to heat-loss to space by long-wave radiative cooling is an important feedback in the earth's atmosphere. It is known that moist convection increases roughly in equilibrium with radiative cooling, an assumption often made in simplified models of the tropical atmosphere. In this study, we use an idealised 2D model of the atmosphere introduced by [...]
Evaluation for the Impacts of Numerical Advection Schemes and Turbulence Modeling on Gray-Zone Simulation of a Squall Line
Published: 2024-04-05
Subjects: Physical Sciences and Mathematics
With increasing computational power, atmospheric simulations have approached the gray zone resolutions where energetic turbulent eddies are partly resolved. The representation of turbulence in the gray zone is challenging and sensitive to the choices of turbulence models and numerical advection schemes. Some numerical advection schemes are designed with numerical dissipation to suppress [...]
EStreams: An Integrated Dataset and Catalogue of Streamflow, Hydro-Climatic Variables and Landscape Descriptors for Europe
Published: 2024-03-02
Subjects: Earth Sciences, Environmental Sciences, Hydrology
Large-sample hydrology datasets have become increasingly available, contributing to significant scientific advances. However, in Europe, only a few such datasets have been published, capturing only a fraction of the wealth of information from national data providers in terms of available spatial density and temporal extent. We present “EStreams”, an extensive dataset of hydro-climatic [...]
A physical demonstration of the increase in global surface energy due to increasing P[CO2]
Published: 2024-02-01
Subjects: Oceanography and Atmospheric Sciences and Meteorology
Although study of the effect of energy-absorbing gases in our atmosphere has a two-hundred year history and an unequivocal explanation based on scientific observation and theory, a significant fraction of the public and even a few scientists doubt the correlation between the increasing the partial pressure of atmospheric carbon dioxide (P[CO2]) and the observed increase in terrestrial temperature [...]
Empowering the Next-Generation Climate Scientists: Insights from the 2023 Forecasters’ WEB (ForWEB) Exchange Program/Hackathon at KNUST, Ghana
Published: 2024-01-10
Subjects: Education, Physical Sciences and Mathematics
In response to the escalating climate change issues, the Forecasters' WEB (ForWEB), established by the Department of Meteorology and Climate Science, KNUST, collaborated with the Department of Atmospheric and Climate Science, UENR to host the first, exchange program/hackathon. The program aimed at equipping students with knowledge, practical skills, and a collaborative ethos for addressing the [...]
A Review of Geological and Climatic Variables in Groundwater Availability Prediction in Africa: Machine Learning Approaches
Published: 2024-01-08
Subjects: Engineering
Groundwater is crucial for Africa's potable water supply, agriculture, and economic development. However, the continent faces challenges with groundwater scarcity due to factors like population growth, climate change, and over exploitation. Over the past ten years, machine learning has been increasingly and successfully used in groundwater level prediction across the world. This review paper [...]
Machine-Learning Approaches for Assessing Aerosol Optical Depth (AOD) in Ghana, West Africa
Published: 2024-01-08
Subjects: Education, Medicine and Health Sciences, Physical Sciences and Mathematics
In the field of environmental health, assessing air pollution exposure has historically posed challenges, primarily due to sparse ground observation networks. To overcome this limitation, satellite remote sensing of aerosols provides a valuable tool for monitoring air quality and estimating particulate matter concentration (PM) at the surface. In this study, we employ two predictive models to [...]
A Systematic Review of Machine Learning Algorithms in Groundwater Level Simulations and Forecasting
Published: 2023-12-29
Subjects: Education, Physical Sciences and Mathematics
Over two billion individuals worldwide rely on subterranean water as their primary reservoir of clean water. Ensuring the sustainable management of this heavily burdened resource necessitates a comprehensive quantitative evaluation of groundwater reserves. This becomes even more critical as water resources face escalating demands resulting from socioeconomic growth, population expansion, and the [...]
Intraplate Stress of the Pacific Plate Inferred from Global Mantle Flow Models
Published: 2023-09-13
Subjects: Physical Sciences and Mathematics
The intraplate stresses of the Earth's oceanic plates, which can be measured by geophysical and geological approaches (i.e., focal mechanisms, borehole breakouts, in situ stress measurements, fault slip analysis, volcanic vent alignments, etc.) is crucial for understanding the origin of the intraplate stress field of plate motion. The Pacific plate, which is the largest oceanic plate on Earth, [...]
Seismic Activities in Ghana: A Systematic Review
Published: 2023-08-08
Subjects: Education, Physical Sciences and Mathematics
Seismic activities pose significant challenges to societies globally. Therefore, it is crucial to understand their occurrence, patterns, and impacts. By studying seismic activities, including earthquakes, researchers can investigate their occurrence, distribution, and characteristics which can provide effective management and risk reduction strategies. The southern part of Ghana is prone to [...]
The climate and environmental determinants of domestic water supply change at the Nasia catchment in Northern Ghana
Published: 2023-06-23
Subjects: Geography
The Nasia river serves as the primary source of domestic water supply for over 5000 households in the Nasia catchment. However, the river is currently experiencing water stress conditions, causing an imbalance between the demand for water and the available supply. In this study, we evaluated the impact of climate and environmental factors on changes in domestic water supply in the Nasia [...]
Different mechanisms of Arctic first-year sea-ice ridge consolidation observed during the MOSAiC expedition
Published: 2023-05-10
Subjects: Earth Sciences, Glaciology, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
Sea-ice ridges constitute a large fraction of the ice volume in the Arctic Ocean, yet we know little about the evolution of these ice masses. Here we examine the thermal and morphological evolution of an Arctic first-year sea-ice ridge, from its formation to advanced melt. Initially the mean keel depth was 5.6 m and mean sail height was 0.7 m. The initial rubble macroporosity (fraction of [...]
In-situ frictional behavior of subducting sediment in the shallow Nankai Trough
Published: 2023-04-22
Subjects: Geology, Geophysics and Seismology, Sedimentology, Tectonics and Structure
The transition from smectite to illite at around the depth with temperature of ~150 °C has long been hypothesized as one of controlling factors of the updip limit depth of the seismogenic zone of subduction zones. Although illite has a higher friction coefficient than smectite, previous friction experiments have little reported that the smectite-illite transition accompanies the transition from [...]