Preprints
Filtering by Subject: Geography
National scale sub-meter time series mangrove mapping using Landsat imagery and deep transfer learning
Published: 2025-12-15
Subjects: Geography, Remote Sensing
Current mangrove time-series products are constrained to 25 m resolution, hindering precise delineation of boundaries, small patches, and internal structures, thus compromising area estimates and ecological assessments. Key barriers are the paucity of historical high-resolution imagery and high-quality labeled samples. To this end, we developed the Sub-meter Mangrove Transfer Learning Mapping [...]
Misalignments between national mangrove monitoring capacities and climate policy ambitions
Published: 2025-12-13
Subjects: Ecology and Evolutionary Biology, Environmental Studies, Forest Sciences, Geography, Life Sciences, Social and Behavioral Sciences
Ambitious global targets for mangrove conservation have advanced rapidly in recent years, yet the implementation of these commitments depends largely on national monitoring systems and policy processes. Despite widespread reliance on country-reported data for setting and evaluating targets, little is known about how national mangrove statistics are generated or how they interact with climate [...]
Climate Network Analysis of Precipitation Regimes from WorldClim Data in Saudi Arabia
Published: 2025-12-12
Subjects: Civil and Environmental Engineering, Environmental Sciences, Geography, Risk Analysis
Saudi Arabia is shaped by a hydroclimatic gradient, from the hyper-arid Rub’ al-Khali desert to the semi-arid mountains in the southwest. This gradient affects runoff generation, groundwater recharge, and drought risk, yet most studies still summarize rainfall using basic statistics from station data or gridded products. This research applies climate network analysis to identify coherent rainfall [...]
Spatiotemporal dynamics of air pollution and vegetation health in a rapidly urbanizing city in northeastern Bangladesh
Published: 2025-11-07
Subjects: Environmental Sciences, Forest Sciences, Geography
Air pollution poses a significant environmental concern and is recognized as the fourth leading risk factor affecting human health. Understanding the levels of air pollution and its relationships with vegetation is crucial for assessing health risks under rapid urbanization. In this study, using the extracted imagery from the Sentinel-5 and Moderate Resolution Imaging Spectroradiometer (MODIS) [...]
Spatio-temporal Analysis of Vegetation Disturbance and Recovery in the Cerrado-Amazon Transition Using Landsat Time Series and Deep Learning
Published: 2025-10-20
Subjects: Geography, Remote Sensing, Social and Behavioral Sciences
The Cerrado-Amazon Transition (CAT) represents the world’s largest tropical ecotone, demarcating the boundary between the Brazilian Cerrado and Amazon biomes. Extensive deforestation and degradation within the CAT are driving irreversible ecological transformations and significant biodiversity loss. The escalating incidence of fire and agriculture-induced deforestation has rendered the CAT a [...]
AI-Powered Flood Risk Assessment for Gilgit-Baltistan Using Multi-Source Satellite Data and Machine Learning
Published: 2025-09-20
Subjects: Artificial Intelligence and Robotics, Geography, Geomorphology, Glaciology, Hydrology
Flood disasters are intensifying worldwide due to climate change, with mountainous regions among the most vulnerable yet least studied. This paper presents an AI-powered flood risk assessment framework for Gilgit-Baltistan, Pakistan, a high-mountain region prone to flash floods and glacial lake outburst floods (GLOFs). Multi-source satellite datasets—including CHIRPS precipitation, JRC Global [...]
Age-Stratified Socio-demographic Determinants of Water Insecurity in Urban Ghana
Published: 2025-08-23
Subjects: Geography
This study examines how age-stratified socio-demographic factors influence water insecurity in urban Ghana, where age-based access differences remain poorly understood. Using survey data from 627 households in three neighborhoods in Accra, we used stratified multivariate logistic regression to analyze water insecurity among three age groups: young adults (18–29 years; 59.2%), middle-aged adults [...]
Multilingual Community Visualizations (MCV): A GIS Dashboard for Linguistic Research and NWS Operations
Published: 2025-07-22
Subjects: Atmospheric Sciences, Geographic Information Sciences, Geography, Social and Behavioral Sciences
The NWS is actively expanding its multilingual outreach to better serve the 68.8 million U.S. individuals who speak a language other than English at home. Among these, 26.3 million individuals with Limited English Proficiency (LEP) are of particular concern, as they often rely entirely on translated forecasts to make life-saving decisions. Yet identifying where these populations are concentrated [...]
Land Use, Sustainability, and Democratic Backsliding
Published: 2025-06-19
Subjects: Geography, Sustainability
Land use and land systems, i.e. how human societies manage and interact with land through social-ecological systems, are at the core of sustainability issues. Democratic backsliding, i.e. the decline or degradation of the institutions and social norms that sustain democratic societies, is a widespread and impactful trend, with strong but understudied two-ways linkages with land use dynamics. From [...]
Spatiotemporal dynamics of floodplain patterns during the last 400 years south of Leipzig - A regional scale analysis
Published: 2025-06-05
Subjects: Earth Sciences, Geographic Information Sciences, Geography, Geomorphology, Other Earth Sciences, Physical and Environmental Geography, Physical Sciences and Mathematics, Remote Sensing, Social and Behavioral Sciences
The Elster-Pleiße floodplain south of Leipzig has undergone significant hydromorphological changes over the past centuries, influenced by both natural processes and anthropogenic interventions. This study employs high-resolution LiDAR-based fluvial-geomorphological mapping (1x1 m resolution) and old maps analyses to reconstruct past river dynamics and identify shifts in channel morphology. [...]
(Social) Innovation in Climate Services Provision
Published: 2025-05-29
Subjects: Geography
The development and adoption of climate services is a dynamic process requiring integration and social acceptance. This study explores how innovative approaches to climate service design can address usability and acceptability gaps and support their integration into urban climate risk management. Using transdisciplinary co-design methods, the study highlights the importance of engaging users to [...]
Trend Analysis of Seasonal Temperature in the Al-Bardi region, Northeastern Libya
Published: 2025-04-25
Subjects: Geography
Abstract: This study investigates seasonal temperature trends in the Al-Bardī region, northeastern Libya, to identify potential climate change over recent decades. Due to limited local meteorological data, NASA POWER's 2-meter temperature records were used. Three statistical tools were applied: the Mann-Kendall test, simple linear regression, and first difference method. Findings from the [...]
Mapping Responsible AI Workflows for Geospatial Data Science: Developing the I-GUIDE Data Ethics Toolkit
Published: 2025-04-23
Subjects: Artificial Intelligence and Robotics, Computer Sciences, Environmental Sciences, Geographic Information Sciences, Geography, Library and Information Science, Sustainability
AI workflows in geospatial data science promise substantial societal benefits yet pose persistent challenges of ethical risk, transparency, and reproducibility. Current guidance, ranging from high‑level principles to isolated documentation templates, remains difficult to translate into day‑to‑day research practice, especially for teams operating under tight deadlines. This paper reports the [...]
Rise in Heat Related Mortality in the United States
Published: 2025-04-20
Subjects: Geography
Over the past century, extreme heat events (EHE) have become more frequent and intense, resulting in significant health impacts and economic challenges worldwide. In the United States, extreme heat is the leading weather-related cause of death, claiming more lives annually than hurricanes, floods, and tornadoes combined. However, the characteristics of EHEs can vary significantly between events [...]
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 [...]