Preprints
There are 7387 Preprints listed.
Floating algal beds and methane dynamics: a potential positive feedback loop
Published: 2026-08-06
Subjects: Terrestrial and Aquatic Ecology
Eutrophic shallow freshwater ecosystems often develop floating filamentous microalgae on their surface during spring and summer, known as floating algal beds (FLAB). In recent years, FLAB has become more frequent and pronounced due to rising temperatures and drier conditions, sometimes even covering the entire surface of water bodies. New evidence suggests that phytoplankton can produce methane [...]
Moving fast without breaking things: The benefits of preprinting for CDR research
Published: 2026-08-05
Subjects: Biogeochemistry, Earth Sciences, Environmental Sciences, Other Earth Sciences, Other Environmental Sciences
Advocates of preprinting usually focus on its benefits to individual researchers — more feedback, citations, and visibility. We argue its greater value is collective: preprinting improves scientific coordination, which the carbon dioxide removal field needs in order to move fast without sacrificing rigor.
Socio-economic characterization and Natural Resource appraisal for watershed development around Pumped Storage Hydroelectric Project sites in Andhra Pradesh, India
Published: 2026-08-05
Subjects: Environmental Studies
A comprehensive baseline study was conducted to develop the watershed treatment plan around four Pumped Storage Hydro-electric Project sites in Andhra Pradesh, India. As a part of study, household survey was conducted with 450 samples around 10 km radius of project reservoir sites. The data was collected on socio-economic conditions of communities and natural resource status around the [...]
Strengthening informal urban functions for climate-resilient cities
Published: 2026-08-05
Subjects: Medicine and Health Sciences, Social and Behavioral Sciences
Informal workers provide essential urban functions, yet climate hazards can disrupt the conditions that sustain them. We propose the informal urban function as an analytical unit linking worker conditions, functional performance, and sustainability outcomes. The framework identifies structural conditions shaping capacity, climate pathways leading to continuity, erosion, disruption, or [...]
Split-Spectrum InSAR for Reliable Ionospheric Correction: A Critical Review of Uncertainty, Validation, and Reproducibility
Published: 2026-08-05
Subjects: Earth Sciences, Physical Sciences and Mathematics
Split-spectrum interferometry provides a physically grounded means of separating dispersive ionospheric phase from non-dispersive deformation-related phase in Interferometric Synthetic Aperture Radar observations. Its practical reliability, however, depends on processing choices that are often reported incompletely and validated inconsistently. This critical narrative review examines the physical [...]
Morphometric and Sedimentological Analysis of Shahnur River Basin, Amravati District, Maharashtra, India
Published: 2026-08-05
Subjects: Earth Sciences
The given study focuses on the morphometric and sedimentological characteristics of Shahnur River Basin. It is situated in the basalt dominated area of Deccan Traps of Amravati District, Maharashtra, India. The basin has various features to investigate the interaction between the lithological control, structural influences, and fluvial processes. Using the SRTM Digital Elevation Model (DEM) data [...]
Plume Origin Localisation with Computer Vision
Published: 2026-08-05
Subjects: Climate, Environmental Monitoring, Physical Sciences and Mathematics
Satellite remote sensing has become a critical tool for monitoring, measuring, and mitigating methane emissions globally. Reliable attribution of methane plumes to their source facility is needed to enable emission mitigation action, robust emissions accounting, and regulatory oversight. Although experts can manually attribute plumes to individual facilities, automated approaches are required for [...]
River dissolved inorganic carbon losses from the Andes to lowland Amazon via cryptic sedimentary exchange processes
Published: 2026-08-05
Subjects: Biogeochemistry, Earth Sciences, Geochemistry, Geomorphology, Hydrology
River carbon transfers and associated greenhouse gas emissions are a major component of the carbon cycle. Proposals to use rivers and their catchments to increase carbon dioxide (CO2) drawdown, by enhanced rock weathering and river alkalinity enhancement, require secure delivery of dissolved inorganic carbon (DIC) and increased cation loads (e.g. Ca2+) to the ocean. Here we explore the fate of [...]
Hydrological contaminant mobilisation from thawing permafrost in Alaska
Published: 2026-08-05
Subjects: Life Sciences, Terrestrial and Aquatic Ecology
Global warming and permafrost thaw increasingly threaten contaminated sites across Alaska, altering contaminant mobilisation risks in sensitive ecosystems and communities. To assess this threat, we used the SIRIUS database to identify 1261 active contaminated sites within Alaska’s permafrost region, noting that many sit near lakes, rivers, and coastlines. We evaluated current and future [...]
Spatiotemporal Variation and Driving Forces of Ecological Quality in the Ili Grassland Based on the Remote Sensing Ecological Index: Implications for Sustainable Ecotourism
Published: 2026-08-04
Subjects: Environmental Studies
Abstract: The Ili Grassland is an important ecological security barrier in northwestern China and a region with abundant ecotourism resources. Scientifically evaluating the spatiotemporal variations in ecological environmental quality and identifying its key driving factors are essential for regional ecological conservation and sustainable ecotourism development. In this study, MODIS remote [...]
Permafrost degradation as a heterogeneous mosaic of tipping and non-tipping behaviour
Published: 2026-08-04
Subjects: Earth Sciences, Geomorphology, Other Earth Sciences
Permafrost thaw can occur as widespread gradual thaw, or as abrupt thaw. Abrupt thaw can occur on decadal or shorter timescales and produce large, often irreversible changes to landscapes, ecosystems, and infrastructure. These changes are frequently described as tipping points, yet the underlying mechanisms differ substantially in their feedback structure, reversibility, and capacity for [...]
Scale-Aware Uncertainty-Aware Machine Learning for Gold Prospectivity Mapping: Evidence-Range Audits for Exploration Targeting
Published: 2026-08-04
Subjects: Physical Sciences and Mathematics
Mineral exploration is expensive because most land has not been tested directly. A missing deposit record is therefore not the same as a true absence record. This paper develops a scale-aware positive-unlabeled learning framework for gold prospectivity mapping using public geological and mineral-occurrence data. The main method is the Non-Gold Evidence Transfer Field (NGETF). NGETF removes every [...]
The Unfinished Map: Observing the Indian Ocean through Model-Corrected, Fleet-Based Sensing
Published: 2026-08-04
Subjects: Earth Sciences, Environmental Monitoring, Environmental Sciences, Oceanography
We make decisions about the ocean-the largest and most consequential system on Earth-from a sample so sparse it would be judged inadmissible in almost any other science. Less than one-thousandth of one percent of the deep seafloor has ever been seen by a human eye or camera; most deep-ocean observation has been carried out by a handful of wealthy nations; and the Indian Ocean-which has absorbed a [...]
Rapid biotransformation and inactivation of subtilisin and α-amylase in wastewater treatment plants Article Type: Research Article
Published: 2026-08-04
Subjects: Environmental Engineering
This study quantified the removal and biotransformation of the industrial enzymes subtilisin and α-amylase in wastewater treatment plants (WWTPs) and activated sludge systems. Measurements of subtilisin and α-amylase at an industrial WWTP showed high inlet concentrations and concentrations below quantification limits in the outlet, corresponding to removals of more than 99% of intact enzymes. [...]
Three-Dimensional Modeling of the Underground Mineral Extraction Process: A Dynamic Three-Dimensional Model of Underground Mining Space
Published: 2026-08-04
Subjects: Geotechnical Engineering, Mining Engineering, Natural Resource Economics, Natural Resources Management and Policy, Other Environmental Sciences
Three-dimensional models of underground space are a core component of digital twins of mining enterprises. The fundamental requirement for such models is that they must be dynamic — accurately reflecting the current state of their physical counterpart at each moment in time. When developing large underground bedded mineral deposits (coal, potash), the mined horizon constitutes a continuously [...]