Preprints

There are 3074 Preprints listed.

Distinct roles of cyclones and anticyclones in setting the midwinter minimum of the North Pacific eddy activity. Part I: Lagrangian perspective

Satoru Okajima, Hisashi Nakamura, Yohai Kaspi

Published: 2022-06-27
Subjects: Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics

The North Pacific storm-track activity is suppressed substantially under the excessively strong westerlies to form a distinct minimum in midwinter, which seems inconsistent with linear baroclinic instability theory. This “midwinter minimum” of the storm-track activity has been intensively investigated for decades as a test case for the storm-track dynamics. However, the mechanisms controlling it [...]

Advecting Superspecies: Efficiently Modeling Transport of Organic Aerosol with a Mass-Conserving Dimensionality Reduction Method

Patrick Obin Sturm, Astrid Manders, Ruud Janssen, et al.

Published: 2022-06-26
Subjects: Atmospheric Sciences, Climate, Earth Sciences, Engineering, Environmental Chemistry, Environmental Engineering, Environmental Sciences, Other Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics

The chemical transport model LOTOS-EUROS uses a volatility basis set (VBS) approach to represent the formation of secondary organic aerosol (SOA) in the atmosphere. Inclusion of the VBS approximately doubles the dimensionality of LOTOS-EUROS and slows computation of the advection operator by a factor of two. This complexity limits SOA representation in operational forecasts. We develop a [...]

Mapping landslides through a temporal lens: An insight towards multi-temporal landslide mapping using the U-Net deep learning model

Kushanav Bhuyan, Sansar Raj Meena, Lorenzo Nava, et al.

Published: 2022-06-25
Subjects: Engineering

Repeated temporal mapping of landslides is essential for investigating changes in landslide movements, legacy effects of the landslide triggering events, and susceptibility changes in the area. However, in order to perform such investigations, multi-temporal (MT) inventories of landslides are required. The traditional approach of visual interpretation from cloud-free optical remote sensing [...]

Heterogenous controls on lake color and trends across the high-elevation U.S. Rocky Mountain region

Isabella Anna Oleksy, Sarah Collins, Samuel J. Sillen, et al.

Published: 2022-06-25
Subjects: Fresh Water Studies

Global change may be contributing to changes in high-elevation lakes and reservoirs, but a lack of data makes it difficult to evaluate spatiotemporal patterns. Remote sensing imagery can provide more complete records to evaluate whether consistent changes across a broad geographic region are occurring. We used Landsat surface reflectance data to evaluate spatial patterns of contemporary lake [...]

Controls on grain size distribution in an ancient sand sea

GABRIEL BERTOLINI, Adrian Hartley, Juliana Marques, et al.

Published: 2022-06-25
Subjects: Earth Sciences, Geology, Physical Sciences and Mathematics, Sedimentology

Grain size distribution in deserts is driven by a combination of autogenic controls such as grain abrasion and sorting due to wind transport and allogenic controls such as provenance and spatial changes in wind-direction. Downwind grain-size trends in present day sand seas display contrasting results. For example, the Namib and Hexi Corridor sand seas show broad downwind fining and sorting [...]

A Comprehensive Review of Ontologies in the Hydrology Towards Guiding Next Generation Artificial Intelligence Applications

Özlem Baydaroğlu Yeşilköy, Serhan Yeşilköy, Muhammed Yusuf Sermet, et al.

Published: 2022-06-25
Subjects: Engineering

Open science presents a new approach for knowledge discovery, dissemination, and integrity. The idea behind open science is to reinforce research activities and create open knowledge networks by exploring, organizing, and sharing scientific data, as well as making research results transparent, open and integrated. Big data derived from remote sensing, ground-based measurements, models and [...]

Groundwater resource allocation in British Columbia: challenges and ways forward

Tom Gleeson, Diana M Allen

Published: 2022-06-24
Subjects: Environmental Engineering, Hydrology, Sustainability, Water Resource Management

Groundwater allocation in British Columbia is facing a number of important challenges as groundwater is licensed under the Water Sustainability Act and potentially included in modern treaties. These challenges include acknowledging the importance of groundwater in supporting environmental flow needs and human water use, the uncertainty and irrelevance of annual recharge estimates, and the [...]

Evolution of diversity in the editorial boards of Geochimica et Cosmochimica Acta and Chemical Geology

Olivier Pourret, Pallavi Anand, Pieter Bots, et al.

Published: 2022-06-24
Subjects: Geochemistry, Physical Sciences and Mathematics

Background: Editorial board members of academic journals are often considered gatekeepers of knowledge and role models for the community. Editorial boards should have sufficiently diverse backgrounds to facilitate the publication of manuscripts with a wide range of research paradigms, methods, and cultural perspectives. Objectives: This study critically evaluates changes in the representation of [...]

Using sediment geochemical records to infer past lake water total phosphorus concentrations at a site with high internal P loading, Lake Søbygaard, Denmark

John Francis Boyle, Maddy Moyle, Martin Søndergaard, et al.

Published: 2022-06-23
Subjects: Physical Sciences and Mathematics

In lakes where phosphorus (P) supply is dominated by external loads, long-term mean lake water TP concentrations can be successfully reconstructed from sediment P profiles and dating using the SI-TP (Sediment Inferred lake water Total Phosphorus) mass balance model. However, it has not yet been shown that the model is applicable at lakes with high internal P loading, where sediment diagenesis [...]

Harnessing Distributed Acoustic Sensing for Earthquake Early Warning: Magnitude Estimation and Ground Motion Prediction

Itzhak Lior, Diane Rivet, Jean Paul Ampuero, et al.

Published: 2022-06-22
Subjects: Geophysics and Seismology

Earthquake Early Warning (EEW) systems provide seconds to tens of seconds of warning time before potentially-damaging ground motions are felt. For optimal warning times, seismic sensors should be installed as close as possible to expected earthquake sources. However, while the most hazardous earthquakes on Earth occur underwater, most seismological stations are located on-land; precious seconds [...]

Discoverability of open data is critical to Earth system science

Aditi Sengupta, Nicholas Ward, James Stegen

Published: 2022-06-22
Subjects: Education, Life Sciences

There is consensus throughout the Earth system science research community that “open data” is of critical importance. However, discoverability and accessibility are often overlooked, raising the question of how useful archived, but not easily discoverable data are. As part of evaluating databases suitable for our own research data archival, we conducted a data discovery exercise (aggregators and [...]

Pervasive carbonation of peridotite to listvenite (Semail Ophiolite, Sultanate of Oman): clues from iron partitioning and chemical zoning

Thierry Decrausaz, Marguerite Godard, Manuel D. Menzel, et al.

Published: 2022-06-22
Subjects: Geochemistry, Geology

Earth’s long-term cycling of carbon is regulated from mid-ocean ridges to convergent margins by mass transfers involving mantle rocks. Here we examine the conversion of peridotite into listvenite (magnesite+quartz) occurring along the basal thrust of the Semail Ophiolite (Fanja, Sultanate of Oman). At the outcrop scale, this transformation defines reaction fronts, from serpentinized peridotites, [...]

A spatial framework for prioritizing biochar application to arable land: a case study for Sweden

Shivesh Kishore Karan, Fabian Osslund, Elias Sebastian Azzi, et al.

Published: 2022-06-21
Subjects: Engineering

The biochar-agriculture nexus can potentially generate several benefits ranging from soil carbon sequestration to reduction in nutrient leaching from arable soils. However, leveraging these benefits for a particular objective requires spatially-explicit information on suitable locations for biochar application. This study provides a flexible multi-criteria framework that delivers spatial [...]

Regionalized life cycle assessment of present and future lithium production for Li-ion batteries

Vanessa Schenker, Christopher Oberschelp, Stephan Pfister

Published: 2022-06-21
Subjects: Engineering

Existing life cycle assessments (LCA) of lithium carbonate production from brines are mainly based on one single brine operation site, while many different lithium carbonate production routes have been developed in the past. Hence, current life cycle inventories do not capture the variability of brine sites and misestimate life cycle impacts. This study presents a systematic approach for LCA of [...]

Bioenergy with or without carbon dioxide removal: influence of functional unit choice and parameter variability

Lisa Zakrisson, Elias Sebastian Azzi, Cecilia Sundberg

Published: 2022-06-21
Subjects: Environmental Indicators and Impact Assessment, Environmental Sciences, Physical Sciences and Mathematics

PURPOSE. Bioenergy with carbon dioxide removal (CDR) is increasingly presented as an efficient way to mitigate climate change. This study set out to determine under which circumstances and methodological choices CDR bioenergy systems are preferable over a reference bioenergy system from a climate change mitigation perspective. In addition, the CDR systems investigated were compared to each [...]

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