Preprints

Filtering by Subject: Other Environmental Sciences

Development of a Deep Neural Network (DNN) Model for Feature Selection from Satellite Images

Soma Mitra, Debkumar Chowdhury, Mauparna Nandan, et al.

Published: 2023-09-08
Subjects: Other Earth Sciences, Other Environmental Sciences

Advances in space-based observation, using remotely sensed data, has proved to be an important tool to monitor the globe, including the areas inaccessible to humans. The Sundarban deltaic region, witnessing the confluence of vast expanses of tropical mangrove forests, tidal rivers, and estuaries, is one such area. Considered as one of the richest biodiversity hotspot zones on earth, home to a [...]

Evaluating Climate Signals on Global Coastal Shoreline Positions A commentary on “Influence of El Niño on the variability of global shoreline position” by Almar and colleagues.

Jonathan Warrick, Daniel Buscombe, Kilian Vos, et al.

Published: 2023-07-26
Subjects: Climate, Geomorphology, Oceanography, Other Earth Sciences, Other Environmental Sciences

Almar and colleagues (2023) are correct in stating that, “understanding and predicting shoreline evolution is of great importance for coastal management.” Amongst the different timescales of shoreline change, the interannual and decadal timescales are of particular interest to coastal scientists as they reflect the integrated system response to the Earth’s climate and its natural modes of [...]

Macroplastic fragmentation in rivers

Maciej Liro, Anna Zielonka, Tim van Emmerik

Published: 2023-05-25
Subjects: Earth Sciences, Environmental Indicators and Impact Assessment, Geomorphology, Hydrology, Other Earth Sciences, Other Environmental Sciences, Sedimentology

The process of macroplastic (>0.5 cm) fragmentation results in the production of smaller plastic particles (micro- and nanoplastics), which threaten biota and human health and are difficult to remove from the environment. The global coverage and long retention times of macroplastic waste in fluvial systems (ranging from years to centuries) create long-lasting and widespread potential for its [...]

Revisiting the Climate Narrative

Denis de Bernardy

Published: 2023-04-06
Subjects: Agriculture, Climate, Ecology and Evolutionary Biology, Environmental Engineering, Environmental Studies, Food Science, Forest Management, Hydrology, Natural Resources and Conservation, Natural Resources Management and Policy, Oil, Gas, and Energy, Other Environmental Sciences, Soil Science, Sustainability, Water Resource Management

The rise in atmospheric carbon dioxide is chiefly tied to land stewardship. Farmers and loggers have removed the plants that, until the industrial era, kept the soil fungi alive, kept soil emissions nearby by breaking the wind, and soaked those up. The result is plumes of carbon dioxide. Putting plants back in would curb these emissions. Farmers and loggers could address biodiversity loss [...]

Data, knowledge and modeling challenges for science-informed management of river deltas

Rafael Jan Pablo Schmitt, Philip S. J. Minderhoud

Published: 2023-03-16
Subjects: Environmental Engineering, Environmental Sciences, Natural Resources and Conservation, Natural Resources Management and Policy, Other Civil and Environmental Engineering, Other Environmental Sciences, Sustainability, Water Resource Management

450 million people live on river deltas and thus on land that is precariously low above the sea level and sinking because of human activities and natural processes. Although global debates around coastal risk typically focus on sea level rise, it is sinking lands and rising seas that together endanger lives and livelihoods in river deltas. However, the ability to quantify and address those risks [...]

From source to sea: Floating macroplastic transport along the Rhine river

Boaz Kuizenga, Paolo Tasseron, Katrin Wendt-Pothoff, et al.

Published: 2023-03-13
Subjects: Environmental Monitoring, Environmental Sciences, Fresh Water Studies, Other Environmental Sciences

Rivers are pathways and storage zones for plastic pollution. Land-based plastic waste enters river systems through anthropogenic and hydrometeorological processes, after which they are transported and retained. Only a fraction is assumed to make it into the ocean. Understanding and quantifying river plastic transport is important to optimize prevention and reduction strategies, and to evaluate [...]

Addressing Tidal Flooding Induced uncertainties in Satellite Derived Global Salt Marsh Change Studies: Impact on Blue Carbon Monitoring

Deepak R Mishra, Peter A Hawman

Published: 2023-03-04
Subjects: Environmental Indicators and Impact Assessment, Environmental Monitoring, Other Environmental Sciences, Water Resource Management

In the past few years, it has been established that remote sensing of wetlands change analysis studies would require careful examination of tidal flooding produced uncertainties in satellite datasets. Tide flagging and filtering mechanisms are required to reduce per-pixel variabilities and errors in change detection. We present a technical note summarizing the potential impact of a lack of tide [...]

Rapid seaward expansion of seaport footprints worldwide

Dhritiraj Sengupta, Eli Lazarus

Published: 2023-02-25
Subjects: Civil Engineering, Geographic Information Sciences, Geomorphology, Other Environmental Sciences, Physical and Environmental Geography, Remote Sensing, Sustainability

As global maritime traffic increases, seaports grow to accommodate and compete for higher volumes of trade throughput. However, growth trajectories of seaport footprints around the world have gone unmeasured, likely because of a lack of readily available spatio-temporal data. Here, we use geospatial analysis of global satellite imagery from 1990–2020 to show that 65 seaports among the world's top [...]

An Updated Parametrization of Algorithms to Retrieve the Diffuse Attenuation of Light in the Ocean from Remote Sensing and its Impact on Estimates of Net Primary Productivity

Charlotte Begouen Demeaux, Emmanuel Boss, Toby K. Westberry

Published: 2023-02-10
Subjects: Climate, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Oil, Gas, and Energy, Other Environmental Sciences

We recently found a significant bias while validating frequently used ocean color algorithms retrieving the spectral diffuse attenuation coefficient (Kd(λ))(Begouen and Boss, 2022). Here we modify existing algorithms for Kd(λ) to remove the observed bias at Kd(490), and evaluate the impact on global and regional estimates of net primary production (NPP) using two different primary production [...]

Internal waves and bottom currents interactions around mesophotic reefs, southeastern Mediterranean

Or M. Bialik, Omri Gadol, Aaron Micallef, et al.

Published: 2023-01-25
Subjects: Environmental Monitoring, Geology, Marine Biology, Other Environmental Sciences, Sedimentology

Mesophotic reefs are found in water depths greater than 30m and as such are, for the most part, removed from most direct wave activity, notably in the Mediterranean Sea. There, they are protected from anthropogenic impact and serve as a possible refuge for marine biodiversity in a warming ocean. Yet, like any reef, their growth is modulated by the distribution of the sediment they produce and [...]

Seasonally-decomposed Sentinel-1 backscatter time-series are useful indicators of peatland wildfire vulnerability

Koreen Millard, Samantha Darling, Nicolas Pelletier, et al.

Published: 2022-10-22
Subjects: Environmental Monitoring, Natural Resources and Conservation, Other Environmental Sciences

Peatlands throughout the boreal forest are expected to experience changes in precipitation, evapotranspiration and temperature due to climate change. Correspondingly, changes in hydrologic regimes could lead to increased drought and occurrence of wildfire. Fire management agencies require information about near-real time wildfire vulnerability in boreal peatlands. Remote sensing tools (e.g., [...]

FIELD LEVEL VARIATION INFLUENCED OUTCOMES MORE THAN N-FERTILISER, FYM, COVER CROPS OR THEIR LEGACY EFFECTS FOLLOWING CONVERSION TO A NO-TILL ARABLE SYSTEM

Ana I.M. Natalio, Matthew A. Back, Andrew Richards, et al.

Published: 2022-10-08
Subjects: Agriculture, Biogeochemistry, Earth Sciences, Environmental Chemistry, Other Earth Sciences, Other Environmental Sciences, Soil Science

Crop establishment in no-till arable systems benefits from favourable soil conditions. Combined with the incorporation of crop residues and manures, no-till can influence soil organic carbon (SOC) and organic matter (SOM) dynamics, crop productivity and nutrient cycling. These processes are shaped by spatial and temporal factors and associated microbial processes. There is a lack of diachronic [...]

Reconstructing Rotomahana Basin topography to disclose the lost White Terraces─ New Zealand’s Eighth Wonder of the World

Rex Bunn

Published: 2022-07-05
Subjects: Geographic Information Sciences, Geomorphology, Other Earth Sciences, Other Environmental Sciences, Physical and Environmental Geography, Spatial Science, Stratigraphy, Volcanology

The greatest geoscience and tourist attractions in the southern hemisphere were the Pink and White Terraces, the lost Eighth Wonder of the World. British, American and European tourists bypassed local calcareous terraces, for the sea voyage to New Zealand where the siliceous terraces astonished a global audience. Their allure remains. In 1886, the Mount Tarawera eruption buried the terraces. They [...]

The Eighth Wonder of the World in New Zealand─ the third, Black Terrace

Rex Bunn

Published: 2022-06-29
Subjects: Geology, Geomorphology, Other Earth Sciences, Other Environmental Sciences, Other Planetary Sciences, Stratigraphy, Volcanology

The greatest tourism and geoscience attraction in the southern hemisphere, in the nineteenth century were the siliceous Pink and White Terraces, the lost Eighth Wonder of the World in New Zealand. In 1886, the Mount Tarawera eruption buried the terraces. In the absence of any government survey or evidence of their locations or destruction; debate over their survival continued until the 1940s. [...]

Paleoclimate controls on lithium enrichment in Great Basin Pliocene-Pleistocene lacustrine clays

Catherine A Gagnon, Kristina Butler, Elizabeth Gaviria, et al.

Published: 2022-05-30
Subjects: Climate, Earth Sciences, Environmental Sciences, Geochemistry, Geology, Natural Resources and Conservation, Other Environmental Sciences, Sedimentology

Terminal lakes are important archives of continental hydroclimate and in some cases contain important economic resources. Here, we present an ∼2.9 m.y. lacustrine carbonate carbon and oxygen stable isotope record from a Great Basin continental drill core. We paired these measurements with bulk lithium concentrations to reveal a relationship between past climate and lithium enrichment in [...]

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