Preprints

Filtering by Subject: Other Environmental Sciences

Evaluating single and multi-date Landsat classifications of land-cover in a seasonally dry tropical forest

João Maria de Andrade, John Elton Brito Leite Cunha, João Nailson de Castro Silva, et al.

Published: 2020-05-28
Subjects: Civil and Environmental Engineering, Earth Sciences, Engineering, Environmental Engineering, Environmental Monitoring, Environmental Sciences, Natural Resources and Conservation, Natural Resources Management and Policy, Other Civil and Environmental Engineering, Other Environmental Sciences, Physical Sciences and Mathematics

Accurate information on the land cover is crucial for efficient monitoring and development of environmental studies in the Brazilian Caatinga forest. It is the largest tropical seasonal forest in South America, presenting high biodiversity and is under intense anthropogenic disturbance. Caatingas land cover is heterogeneous, and rainfall is its primary phenological regulator, presenting mainly [...]

Evaluating UK natural hazards: the national risk assessment

Michael J. Stock, Jonathan Wentworth

Published: 2020-04-15
Subjects: Earth Sciences, Environmental Indicators and Impact Assessment, Environmental Sciences, Other Environmental Sciences, Physical Sciences and Mathematics

Despite its relatively temperate climate and stable geography, natural hazards present multiple risks to human activity in the UK. These range from small-scale local occurrences, such as landslides, through regional incidents, such as flooding, to major high impact, low probability events, such as space weather. The impacts of such hazards can be wide-ranging but may include disruption to [...]

Initial Exploration Free Floating CO2 Fixation Catalysts

Aya Thompson

Published: 2020-04-01
Subjects: Environmental Sciences, Oceanography and Atmospheric Sciences and Meteorology, Other Environmental Sciences, Physical Sciences and Mathematics, Planetary Sciences

Climate change as an inextricable and dire threat to humanity is well established. The primary problem stems from an excess of carbon dioxide in earths atmosphere and oceans causing a gradual increase in average temperature. With this there arises an immediate need for the alteration of this carbon dioxide into differing chemical states. Herein we perform an initial exploration of adapting the [...]

Comment on ‘Unintentional unfairness when applying new greenhouse gas emissions metrics at country level’

Michelle Cain, Keith Shine, Dave Frame, et al.

Published: 2019-12-13
Subjects: Environmental Sciences, Other Environmental Sciences, Physical Sciences and Mathematics

Here, we provide a comment in response to a recently published paper ‘Unintentional unfairness when applying new greenhouse gas emissions metrics at country level’ by Rogelj and Schleussner (2019). We note a number of errors in their critique of the use of GWP* to relate cumulative and short-lived climate pollutants, argue that their logic is flawed, their ethical considerations are narrow and [...]

Characterisation and controls on mineral-sorbed organic matter from a variety of groundwater environments

Phetdala OUDONE, Helen Rutlidge, Martin Andersen, et al.

Published: 2019-12-13
Subjects: Environmental Sciences, Other Environmental Sciences, Physical Sciences and Mathematics

Detailed investigations into natural groundwater organic matter (OM) as carbon sources or sinks in the natural carbon cycle are generally limited. Groundwater OM concentration and composition is altered by biodegradation and sorption to minerals. In the saturated zone of an aquifer, dissolved organic matter (DOM) may represent a significant fraction of the natural groundwater dissolved organic [...]

Future heat extremes likely to have been underestimated

Nicolas Freychet, Gabriele Hegerl, Dann Mitchell, et al.

Published: 2019-12-09
Subjects: Environmental Sciences, Other Environmental Sciences, Physical Sciences and Mathematics

In a warming world, temperature extremes are expected to show a distinguishable change over much of the globe1 and in many regions this change has already been detected in observations2,3. Although previous studies predict an increase in heat extreme events, the magnitude of the change varies greatly among different models even for the same mean warming4. This uncertainty has been linked to [...]

Macrophyte cover type and groundwater as the key drivers of the extremely high organic carbon concentration of soda pans

Emil Boros, Katalin V.-Balogh, Bianka Csitári, et al.

Published: 2019-11-20
Subjects: Biogeochemistry, Earth Sciences, Environmental Sciences, Other Environmental Sciences, Physical Sciences and Mathematics

1. Endorheic soda pans are among the aquatic systems that have the highest dissolved organic carbon (DOC) content on the planet with concentrations reaching values close to 1 g L−1. Considering the importance of inland waters in the global carbon cycle, the understanding of the drivers of such outstanding aquatic organic carbon pools is eminent. The soda pans of the Carpathian Basin present a [...]

The global lake area, climate, and population dataset

Michael Frederick Meyer, Stephanie Labou, Alli N Cramer, et al.

Published: 2019-11-05
Subjects: Environmental Monitoring, Environmental Sciences, Other Environmental Sciences, Physical Sciences and Mathematics

An increasing population in conjunction with a changing climate necessitates a detailed understanding of water abundance at multiple spatial and temporal scales. Remote sensing has provided massive data volumes to track fluctuations in water quantity, yet contextualizing water abundance with other local, regional, and global trends remains challenging by often requiring large computational [...]

On the difficulties of being rigorous in environmental geochemistry studies: some recommendations for designing an impactful paper

Olivier Pourret, BOLLINGER Jean-Claude, Eric D. van Hullebusch

Published: 2019-10-25
Subjects: Biogeochemistry, Chemistry, Earth Sciences, Environmental Chemistry, Environmental Sciences, Geochemistry, Other Environmental Sciences, Physical Sciences and Mathematics

There have been numerous environmental geochemistry studies using chemical, geological, ecological and toxicological methods but each of these fields requires more subject specialist rigour than has generally been applied so far. Field-specific terminology has been misused and the resulting interpretations rendered inaccurate. In this paper, we propose a series of suggestions, based on our [...]

Joint sensing of bedload flux and water depth by seismic data inversion

Michael Dietze, Sophie Lagarde, Eran Halfi, et al.

Published: 2019-08-01
Subjects: Environmental Monitoring, Environmental Sciences, Other Environmental Sciences, Physical Sciences and Mathematics, Water Resource Management

Rivers are the fluvial conveyor belts routing sediment across the landscape. While there are proper techniques for continuous estimates of the flux of suspended solids, constraining bedload flux is much more challenging, typically involving extensive measurement infrastructure or labour-intensive manual measurements. Seismometers are potentially valuable alternatives to in-stream devices, [...]

Information-theoretic Portfolio Decision Model for Optimal Flood Management

Matteo Convertino, Antonio Annis, Fernando Nardi

Published: 2019-06-27
Subjects: Civil and Environmental Engineering, Civil Engineering, Computational Engineering, Earth Sciences, Engineering, Environmental Engineering, Environmental Health and Protection, Environmental Sciences, Geomorphology, Hydraulic Engineering, Hydrology, Life Sciences, Natural Resources and Conservation, Natural Resources Management and Policy, Operations Research, Systems Engineering and Industrial Engineering, Other Civil and Environmental Engineering, Other Engineering, Other Environmental Sciences, Other Physical Sciences and Mathematics, Physical Sciences and Mathematics, Probability, Risk Analysis, Statistics and Probability, Sustainability, Systems Engineering, Water Resource Management

The increasing impact of flooding urges more effective flood management strategies to guarantee sustainable ecosystem development. Recent catastrophes underline the importance of avoiding local flood management, but characterizing large scale basin wide approaches for systemic flood risk management. Here we introduce an information-theoretic Portfolio Decision Model (iPDM) for the optimization of [...]

Decadal land-use/land-cover and land surface temperature change in Dubai and implications on the urban heat island effect: A preliminary assessment

Abdulhakim M Abdi

Published: 2019-06-05
Subjects: Environmental Sciences, Environmental Studies, Geographic Information Sciences, Geography, International and Area Studies, Near and Middle Eastern Studies, Other Environmental Sciences, Physical and Environmental Geography, Physical Sciences and Mathematics, Remote Sensing, Social and Behavioral Sciences

The emirate of Dubai is the most populous and most developed of the seven emirates that comprise the United Arab Emirates. By the end of the 20th century, the emirate had shifted its economy from being primarily petroleum-based to a focus on tourism and financial services. The emirate’s capital, also named Dubai, has been growing at a rapid pace; the population in 1999 was 862,000 inhabitants, [...]

Agriculture-aquaculture transitions on the lower Ganges-Brahmaputra Delta, 1972-2017

Daniel Sousa, Christopher Small

Published: 2019-03-25
Subjects: Earth Sciences, Environmental Indicators and Impact Assessment, Environmental Monitoring, Environmental Sciences, Natural Resources and Conservation, Natural Resources Management and Policy, Other Earth Sciences, Other Environmental Sciences, Physical Sciences and Mathematics, Sustainability

Recent decades have seen a considerable increase in shrimp aquaculture in tropical and subtropical developing countries. This practice is controversial due to its potential for serious economic, food security, and environmental impacts. Of particular concern is the widespread practice of intensive aquaculture in and near mangrove ecosystems where many shrimp species spawn. However, while [...]

Beneficial land use change: Strategic expansion of new biomass plantations can reduce environmental impacts from EU agriculture

Oskar Englund, Pål Börjesson, Göran Berndes, et al.

Published: 2019-03-17
Subjects: Earth Sciences, Environmental Sciences, Other Environmental Sciences, Physical Sciences and Mathematics

Society faces the double challenge of increasing biomass production to meet the future demands for food, materials and bioenergy, while addressing negative impacts of current (and future) land use. In the discourse, land use change (LUC) has often been considered as negative, referring to impacts of deforestation and expansion of biomass plantations. However, strategic establishment of suitable [...]

Google Earth web service as a support for GIS mapping in geospatial research at universities

Polina Lemenkova

Published: 2019-01-25
Subjects: Computer Sciences, Earth Sciences, Ecology and Evolutionary Biology, Education, Environmental Education, Environmental Monitoring, Environmental Sciences, Environmental Studies, Geographic Information Sciences, Geography, Life Sciences, Natural Resources Management and Policy, Other Computer Sciences, Other Earth Sciences, Other Environmental Sciences, Other Geography, Physical and Environmental Geography, Physical Sciences and Mathematics, Remote Sensing, Science and Mathematics Education, Social and Behavioral Sciences, Spatial Science, Terrestrial and Aquatic Ecology

The geospatial work has been performed using combination of the Google Earth imagery, Landsat TM images and Erdas Imagine GIS software. The advantage of utilizing Google Earth scenes with Landsat TM satellite imagery, along with GIS techniques and methods, for inventorying land cover types has been demonstrated for landscape studies. Combination of land cover type characteristics and landscape [...]

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