Preprints
There are 8005 Preprints listed.
Methodological Bias between Trajectory Geometric Co-location and Air-Parcel Lagrangian Co-location: Evidence from UAV Re-penetration Observations over the Western Sichuan Plateau
Published: 2026-09-05
Subjects: Atmospheric Sciences, Meteorology
Whether "trajectory geometric co-location" is equivalent to "air-parcel Lagrangian co-location" remains a methodological blind spot in evaluating UAV cloud-seeding re-penetration (the UAV performed a repeated cloud penetration—hereafter, re-penetration—to re-sample the same cloud volume). Using silver iodide (AgI) seeding observations from a Wing Loong-2 UAV flight over the Western Sichuan [...]
What Does a Country-Level Difference-in-Differences on Satellite NO₂ Identify? Baseline Composition, Winter Retrievals and the European Climate Law
Published: 2026-09-05
Subjects: Earth Sciences, Environmental Sciences, Environmental Studies, Geographic Information Sciences, Geography, International and Area Studies, Oceanography and Atmospheric Sciences and Meteorology, Physical and Environmental Geography, Remote Sensing, Spatial Science, Statistics and Probability
Satellite observations make it easy to compare air pollution in countries that adopted a policy with countries that did not. This paper examines what such a comparison identifies. It uses Sentinel-5P TROPOMI tropospheric NO₂ for 2019–2024 and a country-level difference-in-differences (DiD) model of the European Climate Law that compares the EU-27 with nine neighbouring non-EU countries. NO₂ fell [...]
What Did the Destruction of the Kakhovka Dam Do to Vegetation? Separating Flood, Reservoir and Irrigation Effects with Satellite Data
Published: 2026-09-05
Subjects: Applied Statistics, Biodiversity, Earth Sciences, Environmental Sciences, Geographic Information Sciences, Geography, Human Geography, International and Area Studies, Other Geography, Physical and Environmental Geography, Remote Sensing, Spatial Science, Statistical Methodology, Statistical Models, Statistics and Probability
The Kakhovka Dam in southern Ukraine was destroyed on 6 June 2023. This could have changed vegetation in three ways: through the flood below the dam, the draining of the reservoir, and the loss of water for the irrigation canals. All three happened inside an active war zone. I tested each pathway separately with MODIS NDVI at 250 m resolution for 2016–2024. Treated land was defined by what [...]
DOUBLE JEOPARDY: The Vulnerability Spiral of Compound Climate Risk Across 5 Islands
Published: 2026-09-05
Subjects: Biodiversity, Earth Sciences, Environmental Monitoring, Environmental Sciences, Environmental Studies, Geographic Information Sciences, Geography, Geomorphology, Hydrology, International and Area Studies, Marine Biology, Natural Resource Economics, Nature and Society Relations, Oceanography and Atmospheric Sciences and Meteorology, Other Environmental Sciences, Other Geography, Remote Sensing, Spatial Science, Statistical Methodology, Statistical Models, Sustainability
Low islands face two threats at once: the sea rising, and the reefs and mangroves that buffer it weakening. I measured both across 5 island groups in 3 ocean basins (Maldives, Lakshadweep, Seychelles, Fiji and the Canary Islands), testing mangroves and coral reefs as separate pathways. Exposure is the share of people (WorldPop 2020) living on land at or below 1 m, on a bare earth elevation model [...]
A Transformer-Based Surrogate for Distributed Groundwater Dynamics with Zero-Shot Cross-Basin Transfer and Precipitation-Regime Data Augmentation
Published: 2026-09-05
Subjects: Engineering, Physical Sciences and Mathematics
Large-scale physically based groundwater models generate spatially distributed simulations, but their cost limits the regional datasets available for training artificial-intelligence-based surrogates. Here, we developed and systematically evaluated a groundwater-adapted PredFormer surrogate for regional ParFlow-CLM simulations. The framework uses temporal-first factorized attention, [...]
Competing Psychological Pathways Linking Age and Individual and Collective Pro-Environmental Behavior Intentions: The Role of Conservatism
Published: 2026-09-04
Subjects: Environmental Studies
Promoting pro-environmental behavior (PEB) across the lifespan is critical for achieving an effective response to climate change. This may particularly be important in later life, as older adults hold substantial economic resources and electoral influence, enabling them to shape societal responses to environmental challenges. However, they have also been found to be more likely than younger [...]
Healthcare professionals at the frontline of Climate Change: knowledge, attitudes, and practices
Published: 2026-09-04
Subjects: Public Health
Healthcare professionals (HCPs), as trusted cadre of community, play a crucial role advocating climate action to reduce its impact on health. This study aimed to assess the knowledge, attitudes, practices and perceived responsibilities (KAPP), associated factors, of healthcare providers in Karachi, Pakistan, regarding climate change and its associated health effects. We conducted a [...]
Abundance and Spatial Distribution of Third Generation Cephalosporin Resistant Escherichia coli in Wastewater and impact on the receiving Korle Lagoon, Accra, Ghana
Published: 2026-09-04
Subjects: Microbiology
Antimicrobial resistance in the environment is a major public health threat, particularly in low- and middle-income countries where there is inadequate wastewater treatment infrastructure. Third generation cephalosporin resistant Escherichia coli (3GCR E. coli) are of particular concern as they have clinical significance and may spread associated resistance genes in environment. This study [...]
A multicriteria decision analysis framework for generating baseline virtual weather stations in Zimbabwe
Published: 2026-09-04
Subjects: Oceanography and Atmospheric Sciences and Meteorology
In this study, we generate baseline Virtual Weather Stations (VWS) in locations with minimal atmospheric noise by avoiding two major surface factors known to cause noise in remotely sensed weather observations. The study also proposes an improvement to the spatial coverage of Zimbabwe's weather observation network through the identification of environmentally suitable locations for virtual [...]
Testing the Fluorescence Advantage: Does Solar-Induced Fluorescence Signal Agricultural Drought Earlier than NDVI in Marathwada, India?
Published: 2026-09-04
Subjects: Agriculture, Biodiversity, Ecology and Evolutionary Biology, Environmental Studies, Forest Sciences, Geographic Information Sciences, Geography, Nature and Society Relations, Remote Sensing, Spatial Science
India uses rainfall deficits and vegetation indices such as NDVI to declare drought, and PMFBY crop-insurance payouts depend on these declarations. Solar-Induced Fluorescence (SIF) is linked to photosynthesis, so many expect it to show drought stress earlier than NDVI. I tested this in the eight districts of Marathwada, Maharashtra, over nine Kharif seasons (2015–2023). I compared [...]
Stolen Strata: Brick Kilns and the Loss of Karewa Tableland in Budgam, Kashmir,1993–2025, with a Correction to an Earlier Estimate
Published: 2026-09-04
Subjects: Agriculture, Biodiversity, Earth Sciences, Environmental Sciences, Environmental Studies, Geographic Information Sciences, Geography, Geomorphology, Nature and Society Relations, Other Geography, Remote Sensing, Spatial Science
Karewa tablelands are the flat-topped, scarp-bounded remnants of the old lake and river deposits of the Kashmir Valley. Reporting from Kashmir has said for years that they are being dug away for brick clay and fill, but I did not find a satellite measurement of how much, where and when. This study asks three questions: how much karewa tableland that was vegetated in 2013–2015 is no longer [...]
Ghost Infrastructure: Historical Industrial Geography and the Persistence of Path-Dependent Accessibility in Bochum, Germany
Published: 2026-09-04
Subjects: Earth Sciences, Environmental Sciences, Environmental Studies, Geographic Information Sciences, Geography, Human Geography, Nature and Society Relations, Other Geography, Remote Sensing, Spatial Science, Statistics and Probability
The complete 69,393 pedestrian street node network from Bochum was used for a Welch's t-test, which revealed as a surprise that street nodes with low accessibility are actually significantly farther from historical industrial sites than street nodes with high accessibility (t=42.887, p<0.00001, Cohen's d=0.589 - medium-to-large effect), which is the opposite of what the original hypothesis [...]
Magnitude-order improvements to the measurement precision of Antarctic grounding zone dynamics using SAR satellite constellations
Published: 2026-09-04
Subjects: Aerospace Engineering, Earth Sciences, Engineering, Geophysics and Seismology, Glaciology
Glacier loss in Antarctica is strongly influenced by melt in the grounding zone, the transition between grounded and floating ice. Thwaites Glacier is a critical region, with 65 cm of sea-level-equivalent ice. A recent dataset tracks grounding line retreat for Thwaites and other Antarctic ice streams over 30 years. Despite this long-term record, significant uncertainty remains in predictions of [...]
A global assessment of effective fracture porosity and density in crystalline rocks
Published: 2026-09-04
Subjects: Geology
Knowledge of effective fracture porosity in crystalline rocks is important for water resources, geological storage and subsurface biogeochemistry, but remains poorly constrained due to limited and regionally biased data. Here, we use global permeability datasets and equations that relate effective porosity and permeability to estimate effective porosity and hydraulically active fracture density [...]
The Cotton Line: Testing the Institutional Persistence of an Erased Colonial Land-Tenure Boundary Across Vidarbha's Agrarian and Vegetation Geography
Published: 2026-09-04
Subjects: Agriculture, Biodiversity, Earth Sciences, Environmental Sciences, Environmental Studies, Geography, International and Area Studies, Statistics and Probability
Can a provincial boundary abolished in 1956 still be detected in today's farmland? In the nineteenth century Berar, in western Vidarbha, was settled under the Ryotwari land-revenue system. The Central Provinces districts to the east were settled under Malguzari. On district lineage the old line matches the present boundary between Amravati and Nagpur Divisions, which I rebuild as a 384.7 km line [...]