Preprints

Filtering by Subject: Remote Sensing

Fisher Discriminant Analysis for Extracting Interpretable Phenological Information from Multivariate Time Series Data

Conor Doherty, Meagan S Mauter

Published: 2022-10-24
Subjects: Applied Statistics, Environmental Engineering, Environmental Monitoring, Environmental Sciences, Remote Sensing

For many applications in environmental remote sensing, the interpretation of a given measurement depends strongly on what time of year the measurement was taken. This is particularly the case for phenology studies concerned with identifying when plant developmental transitions occur, but it is also true for a wide range of applications including vegetation species classification, crop yield [...]

The Openscapes Flywheel: A framework for managers to facilitate and scale inclusive Open science practices

Erin Robinson, Julia S. Stewart Lowndes

Published: 2022-10-10
Subjects: Adult and Continuing Education, Environmental Studies, Remote Sensing

Solutions to large-scale environmental and social challenges require radical collaboration that blends technology and people — and the Open science movement is answering that call by transforming how we work together. While often the focus is on data, publications, code, software developers, and researchers, the transition to Open involves investment across agencies and organizations of all [...]

Developing seagrass index for long term monitoring of Zostera japonica seagrass bed: a case study in Yellow River Delta, China

Qingqing Zhou, Yinghai Ke, Xinyan Wang, et al.

Published: 2022-06-30
Subjects: Earth Sciences, Environmental Monitoring, Environmental Sciences, Geographic Information Sciences, Geography, Physical and Environmental Geography, Remote Sensing

Seagrass beds offer unique and vital ecological services as an important blue carbon ecosystem in coastal wetlands. Zostera japonica is an intertidal seagrass species native to eastern Asia and is one of the most widely distributed seagrass species in China. However, little is known on the long-term variations of Z. japonica extents. Automatic mapping method for Z. japonica seagrass beds is in [...]

Contemporary Remote Sensing Tools for Integrated Assessment and Conservation Planning of Ice-free Antarctica

Larissa Patricio-Valerio, Justine Shaw, Felipe Gonzalez, et al.

Published: 2022-06-17
Subjects: Environmental Monitoring, Natural Resources and Conservation, Remote Sensing

Monitoring and understanding Antarctica is critical for conservation of its values. Remote sensing has been increasingly employed to observe large areas at higher frequency than traditional monitoring methods, enabling systematic assessments at low cost. However, currently there are limitations in the ability of the available remote sensing tools to answer the most pressing scientific, [...]

Cutting down trees does not build prosperity: On the continued decoupling of Amazon deforestation and economic development in 21st century Brazil

DARREN NORRIS, Terciane Sabadini Carvalho, Angela M. Guerrero, et al.

Published: 2022-05-13
Subjects: Environmental Studies, Forest Management, Life Sciences, Nature and Society Relations, Remote Sensing

Background and aims: We present evidence examining spatial and temporal patterns in forest cover changes and economic progress in Brazilian Amazonia. Specifically we tested two predictions embedded in arguments used by influential interest groups: i) where there is less forest cover economic progress should increase and ii) areas with most recent deforestation should have increased economic [...]

Revealing the Global Longline Fleet with Satellite Radar

David Allen Kroodsma, Tim Hochberg, Pete Davis, et al.

Published: 2022-04-06
Subjects: Aquaculture and Fisheries Life Sciences, Remote Sensing

Because many vessels use the Automatic Identification System (AIS) to broadcast GPS positions, recent advances in satellite technology have enabled us to map global fishing activity. Understanding of human activity at sea, however, is limited because an unknown number of vessels do not broadcast AIS. Those vessels can be detected by satellite-based Synthetic Aperture Radar (SAR) imagery, but this [...]

Large-area mapping of active cropland and short-term fallows in smallholder landscapes using PlanetScope data

Philippe Rufin, Adia Bey, Michelle Picoli, et al.

Published: 2022-03-17
Subjects: Environmental Studies, Geographic Information Sciences, Nature and Society Relations, Remote Sensing, Spatial Science

Cropland mapping in smallholder landscapes is challenged by complex and fragmented landscapes, labor-intensive and unmechanized land management causing high within-field variability, rapid dynamics in shifting cultivation systems, and substantial proportions of short-term fallows. To overcome these challenges, we here present a large-area mapping framework to identify active cropland and [...]

Fire-vegetation interactions in Arctic tundra and their spatial variability

Dong Chen, Cheng Fu, Liza K. Jenkins, et al.

Published: 2022-03-15
Subjects: Earth Sciences, Plant Sciences, Remote Sensing, Terrestrial and Aquatic Ecology

Circumpolar tundra has experienced a greater increase in temperatures compared to any other biome, with a magnitude of the increase nearly three times the global average. Widespread shrubification associated with pronounced observed warming is gradually transforming the tundra ecosystem structure and function. This study confirms that a shrub-dominated fire-biomass positive feedback loop is [...]

Analyzing the uncertainty of the CORINE Land Cover time series (1990-2018) for Spain

David García-Álvarez, María Teresa Camacho Olmedo

Published: 2022-02-10
Subjects: Environmental Studies, Geographic Information Sciences, Geography, Human Geography, Nature and Society Relations, Other Geography, Physical and Environmental Geography, Remote Sensing, Spatial Science

CORINE Land Cover is one of the most relevant Land Use Cover (LUC) databases in Europe because of its degree of detail and long time series. Although some studies have assessed the uncertainty of the database for specific years and periods, no work has been found that analyses all the available CORINE time series (1990-2018). In this study, we analyze the uncertainties of the CORINE time series [...]

Structural uncertainty and uncertainty management in four common Land Use Cover Change (LUCC) model software packages. A comparison

David García-Álvarez, María Teresa Camacho Olmedo, Hedwig Van Delden, et al.

Published: 2022-02-10
Subjects: Environmental Studies, Geographic Information Sciences, Geography, Other Geography, Remote Sensing, Spatial Science

Research on the uncertainty of Land Use Cover Change (LUCC) models is still limited. Through this paper, we aim to globally characterize the structural uncertainty of four common software packages (CA_Markov, Dinamica EGO, Land Change Modeler, Metronamica) and analyse the options that they offer for uncertainty management. The models have been compared qualitatively, based on their structures [...]

Setting up a Land Use Cover Change model application for Greater Sydney. Lessons learnt and challenges ahead

David García-Álvarez, Chris Pettit, Simone Zarpelon Leao, et al.

Published: 2022-02-09
Subjects: Environmental Studies, Geographic Information Sciences, Geography, Human Geography, Nature and Society Relations, Other Geography, Remote Sensing, Spatial Science

This chapter presents a Land Use Cover Change (LUCC) model application developed for Greater Sydney. It aims to help decision making in the context of the strategic and spatial planning of Greater Sydney. To this end, the model simulates the dynamics of industrial, low density residential and medium-high density residential areas at spatial resolution of 100x100 m. A series of three Land Use [...]

Proposal for an index of roads and structures for the mapping of non-vegetated urban surfaces using OSM and Sentinel data

Eduardo Felix Justiniano, Edimilson Rodrigues Santos Junior, Breno Malheiros Melo, et al.

Published: 2022-01-28
Subjects: Remote Sensing

The use of volunteered geographic information (VGI), such as OpenStreetMap (OSM), to assist in mapping land use and coverage together with remote sensing images is relatively recent. Most studies have used OSM to assist in sample collection for image classification or aggregated vectors of buildings, transport, and land-use and coverage as ancillary data to support mapping refinements. This study [...]

A scalable framework for quantifying field-level agricultural carbon outcomes

Kaiyu Guan, Zhenong Jin, Evan H. DeLucia, et al.

Published: 2022-01-01
Subjects: Environmental Studies, Physical and Environmental Geography, Remote Sensing, Social and Behavioral Sciences

Agriculture contributes nearly a quarter of global greenhouse gas (GHG) emissions, which is motivating interest in certain farming practices that have the potential to reduce GHG emissions or sequester carbon in soil. The related GHG emission (including N2O and CH4) and changes in soil carbon stock are defined here as “agricultural carbon outcomes”. Accurate quantification of agricultural carbon [...]

Climate change, fire return intervals and the growing risk of permanent forest loss in boreal Eurasia

Arden L Burrell, Qiaoqi Sun, Robert Baxter, et al.

Published: 2021-11-15
Subjects: Climate, Environmental Indicators and Impact Assessment, Environmental Monitoring, Other Environmental Sciences, Physical and Environmental Geography, Remote Sensing, Spatial Science

Climate change has driven an increase in the frequency and severity of fires in Eurasian boreal forests. A growing number of field studies have linked the change in fire regime to post-fire recruitment failure and permanent forest loss. In this study we used four burnt area and two forest loss datasets to calculate the landscape-scale fire return interval (FRI) and associated risk of permanent [...]

Forest data to insights and experiences using gamification

Mikko Vastaranta, Michael A. Wulder, Juho Hamari, et al.

Published: 2021-10-22
Subjects: Geographic Information Sciences, Geography, Nature and Society Relations, Remote Sensing, Social and Behavioral Sciences

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