Preprints

There are 4501 Preprints listed.

Geospatial Modeling and Mapping of Soil Erosion in India

Ravi Raj, Manabendra Saharia, Sumedha Chakma

Published: 2024-03-13
Subjects: Civil and Environmental Engineering, Engineering

Soil erosion generally removes the topmost fertile layer of soil, affecting agricultural productivity on a larger scale. As a significant portion of the Indian economy depends on agricultural productivity, granular assessment of the impact of soil erosion becomes critical. However, a national-scale assessment of soil erosion and an impact classification system currently doesn’t exist over India. [...]

Wildfire smoke exposure and mortality burden in the US under future climate change

Minghao Qiu, Jessica Li, Carlos Gould, et al.

Published: 2024-03-12
Subjects: Environmental Health and Protection, Environmental Indicators and Impact Assessment, Environmental Sciences, Public Health, Social and Behavioral Sciences

Wildfire activity has increased in the US and is projected to accelerate under future climate change. However, our understanding of the impacts of climate change on wildfire smoke and health remains highly uncertain. Here we quantify the mortality burden in the US due to wildfire smoke fine particulate matter (PM2.5) under future climate change. We construct an ensemble of statistical and machine [...]

The Virtual Water Gallery: Art as a catalyst for transforming knowledge and behaviour in water and climate

Louise Arnal, Corinne Schuster-Wallace

Published: 2024-03-12
Subjects: Environmental Studies

Water is life. Water-related challenges, such as droughts, floods, water quality degradation, permafrost thaw and glacier melt, exacerbated by climate change, affect everyone. It is challenging, yet of critical importance, to communicate science on such difficult highly volatile topics. Art is a more approachable medium to traditional scientific outlets that has the potential to diversify voices [...]

Natural sampling and aliasing of marine geochemical signals

Andrew Curtis, Hugo Bloem, Rachel Wood, et al.

Published: 2024-03-09
Subjects: Physical Sciences and Mathematics

It is well known that the sedimentary rock record is both incomplete and biased. Correlation between geographically distinct records is problematic in the absence of absolute age constraints, which can profoundly affect interpretations of geological and geochemical data. We use a computational process model to create canonical examples of carbonate-siliciclastic stratigraphic cross-sections from [...]

The Great Oxidation Event (GOE): Biogeochemical Feedback and Tipping Points

Andrew P Ingersoll

Published: 2024-03-09
Subjects: Physical Sciences and Mathematics

Approximately 1.4 Ga after life first appeared, atmospheric O2 suddenly jumped by more than an order of magnitude over a 20-50 Ma period. The contrast between these two timescales does not seem to be due to any sudden, large-amplitude change in external forcing. However, it could be due to processes intrinsic to the geobiological system itself, namely, positive feedback between atmospheric O2 and [...]

Lunar Crater Detection Using YOLOv8 Deep Learning

Yajnavalkya Bandyopadhyay

Published: 2024-03-09
Subjects: Engineering, Physical Sciences and Mathematics

In lunar exploration missions, the detection of lunar craters is essential for scientific inquiry, navigation, and terrain analysis. Conventional approaches for identifying craters depend on labor- and time-intensive manual inspection or semi-automated procedures. An effective and precise way to automate this procedure is through the use of deep learning algorithms. In this brief message, we [...]

Linking local climate scenarios to global warming levels: Applicability, prospects and uncertainties

Benedikt Becsi, Herbert Formayer

Published: 2024-03-09
Subjects: Climate, Environmental Indicators and Impact Assessment, Environmental Sciences, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics

Global warming levels (GWLs) are increasingly becoming a central concept in climate change studies. In recent years, their integrative quality for climate change impact analysis has been demonstrated, and methodological advancements have helped to compensate for some inherent shortfalls of the concept. However, their applicability at the regional level is debatable, and no study to date has [...]

Evaluation of the Sentinel-1 SAR image processing algorithms performance

Gregoriy Kaplan

Published: 2024-03-08
Subjects: Environmental Monitoring, Physical Sciences and Mathematics

The following paper discussed the performance of previously developed SAR algorithms applied to Sentinel-1 imagery. The outputs of algorithms were correlated to top-performing Sentinel-2 reNDVI algorithms. The study found that Levelled and Normalized Sigma nought outperformed the Gamma Nought, and, especially, Sigma Nought, and RVI algorithms.

The long journey of a benzodiazepine

Harjas Kaur, Fiona Parascandalo, Emma Ko, et al.

Published: 2024-03-08
Subjects: Other Life Sciences

Medications make up 12-25% of health care’s greenhouse gas emissions production. By utilizing a life cycle analysis approach, this article lays out each step of production and disposal and estimates the global journey of a generic clonazepam pill. Generic clonazepam was selected because it is a commonly prescribed medication and is often linked to deprescribing initiatives due to its potential [...]

Assessing the Earthquake Recording Capability of an Ocean-bottom Distributed Acoustic Sensing Array in the Sanriku region, Japan

Yaolin Miao, Amir Salaree, Zack J. Spica, et al.

Published: 2024-03-07
Subjects: Physical Sciences and Mathematics

Sparse seismic instrumentation in the oceans limits our understanding of the Earth’s dynamics. The emerging technology of Distributed Acoustic Sensing (DAS), which can turn existing fiber-optic cable arrays into thousands of seismic sensors, has the potential to fill the data gap. Yet, the power of OBDAS for routine seismic monitoring has to be further explored. In this study, we investigate the [...]

Evaluating Local Climate Policy: Municipal Action Plans through the Lens of Resilience and Environmental Justice

Graham David Diedrich

Published: 2024-03-07
Subjects: Environmental Studies

In the US, local governments are increasingly crucial in driving climate action. Drawing upon Tang et al. (2010) and Baker et al. (2012), this study assesses nine local climate action plans in the state of Michigan. It introduces a comprehensive framework, integrating climate resilience and environmental justice (EJ) indicators to evaluate plan content. Despite recognizing global climate [...]

Fiber-based super-bridging agents improve flotation and settling during water treatment

Badr Raissouni, Mohamed Lotfi Benkara, Mathieu Lapointe

Published: 2024-03-07
Subjects: Chemical Engineering, Civil and Environmental Engineering, Engineering

Increasing demand for water poses a major challenge to the water treatment industry. To maintain their floc removal efficiency, water treatment plants are expected to require larger separation units and use more chemicals, namely, coagulants and flocculants. Conventional physicochemical treatments produce flocs that are limited in size, which limits floc removal efficiency via gravitation-based [...]

Moving graphs: Predicting barchan dune migration rates from their shapes

Daan Beelen

Published: 2024-03-07
Subjects: Physical Sciences and Mathematics

In this study, geometric perspectives on sand dune formation and motion are summarized, introduced, and combined to predict time-averaged velocities (migration rates) of barchan dunes directly from their shapes. First, it is proposed that smaller sediment accumulations outpace larger ones due to differences in surface-to-volume ratio. This ratio is defined by a bedform’s wavelength and its [...]

Plant controls over tropical wetland nitrous oxide dynamics: a review

Hannah Cooper, Scott Davidson, Vincent Gauci, et al.

Published: 2024-03-07
Subjects: Biogeochemistry, Earth Sciences, Environmental Sciences, Physical Sciences and Mathematics

Tropical wetlands are an important global source of greenhouse gas emissions, including nitrous oxide, a potent and long-last greenhouse gas. Tropical wetland ecosystems can be highly heterogeneous, featuring a variety of vegetation types, from grasses through to palms and mangroves. A variety of plant-mediated processes can exert key controls over wetland plant/soil nitrogen transportation and [...]

Sediment Corrections for Distributed Acoustic Sensing

Alister Trabattoni, Clara Vernet, Martijn van den Ende, et al.

Published: 2024-03-06
Subjects: Physical Sciences and Mathematics

On continental margins, sediments cause significant and spatially variable delays in seismic phase arrival times. The strong impedance contrast of the sediment-bedrock interface causes P-wave splitting that is clearly seen on Distributed Acoustic Sensing recordings of earthquakes, resulting in additional phase arrivals that must be picked separately. We introduce sediment corrections to correctly [...]

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