Andreas Vollrath
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View article: Slowly getting there: a review of country experience on estimating emissions and removals from forest degradation
Slowly getting there: a review of country experience on estimating emissions and removals from forest degradation Open
View article: A community palm model
A community palm model Open
Palm oil production has been identified as one of the major drivers of deforestation for tropical countries. To meet supply chain objectives, commodity producers and other stakeholders need timely information of land cover dynamics in thei…
View article: Restoring Degraded Landscapes through an Integrated Approach Using Geospatial Technologies in the Context of the Humanitarian Crisis in Cox’s Bazar, Bangladesh
Restoring Degraded Landscapes through an Integrated Approach Using Geospatial Technologies in the Context of the Humanitarian Crisis in Cox’s Bazar, Bangladesh Open
The influx of nearly a million refugees from Myanmar’s Rakhine state to Cox’s Bazar, Bangladesh, in August 2017 put significant pressure on the regional landscape leading to land degradation due to biomass removal to provide shelter and fu…
View article: Monitoring Large-Scale Restoration Interventions from Land Preparation to Biomass Growth in the Sahel
Monitoring Large-Scale Restoration Interventions from Land Preparation to Biomass Growth in the Sahel Open
In this work we demonstrate that restoration interventions in arid to semi-arid landscapes can be independently assessed by remote sensing methods throughout all phases. For early verification, we use Sentinel-1 radar imagery that is sensi…
View article: Sentinel-1 SAR Backscatter Analysis Ready Data Preparation in Google Earth Engine
Sentinel-1 SAR Backscatter Analysis Ready Data Preparation in Google Earth Engine Open
Sentinel-1 satellites provide temporally dense and high spatial resolution synthetic aperture radar (SAR) imagery. The open data policy and global coverage of Sentinel-1 make it a valuable data source for a wide range of SAR-based applicat…
View article: Forest disturbance alerts for the Congo Basin using Sentinel-1
Forest disturbance alerts for the Congo Basin using Sentinel-1 Open
A humid tropical forest disturbance alert using Sentinel-1 radar data is presented for the Congo Basin. Radar satellite signals can penetrate through clouds, allowing Sentinel-1 to provide gap-free observations for the tropics consistently…
View article: Angular-Based Radiometric Slope Correction for Sentinel-1 on Google Earth Engine
Angular-Based Radiometric Slope Correction for Sentinel-1 on Google Earth Engine Open
This article provides an angular-based radiometric slope correction routine for Sentinel-1 SAR imagery on the Google Earth Engine platform. Two established physical reference models are implemented. The first model is optimised for vegetat…
View article: Mapping wetland characteristics using temporally dense Sentinel-1 and Sentinel-2 data: A case study in the St. Lucia wetlands, South Africa
Mapping wetland characteristics using temporally dense Sentinel-1 and Sentinel-2 data: A case study in the St. Lucia wetlands, South Africa Open
View article: Participatory mapping of forest plantations with Open Foris and Google Earth Engine
Participatory mapping of forest plantations with Open Foris and Google Earth Engine Open
View article: Forest plantation mapping in the Southern Highlands, Tanzania 2016: species map, link to geotiff file
Forest plantation mapping in the Southern Highlands, Tanzania 2016: species map, link to geotiff file Open
The resulting forest plantation species map (raster) for the Southern Highlands area, created using the collected reference data and different remote sensing data sets from 2013-2015 as listed in the abstract of the publication. In the ras…
View article: Forest plantation mapping in the Southern Highlands, Tanzania 2016: reference point data set
Forest plantation mapping in the Southern Highlands, Tanzania 2016: reference point data set Open
Reference point data set of Southern Highlands land use / land cover, collected in a participatory mapping event, Mapathon, in Tanzania, October 2016, using Google Earth / Collect Earth software, later used in the final forest plantation c…
View article: Forest plantation mapping in the Southern Highlands, Tanzania 2016
Forest plantation mapping in the Southern Highlands, Tanzania 2016 Open
Recent years have witnessed the practical value of open-access Earth observation data catalogues and software in land and forest mapping. Combined with cloud-based computing resources, and data collection though the crowd, these solutions …
View article: Forest plantation mapping in the Southern Highlands, Tanzania 2016: validation dataset
Forest plantation mapping in the Southern Highlands, Tanzania 2016: validation dataset Open
Validation data set collected by the author team, November 2016, using Google Earth / Collect Earth software
View article: Decomposing DInSAR Time-Series into 3-D in Combination with GPS in the Case of Low Strain Rates: An Application to the Hyblean Plateau, Sicily, Italy
Decomposing DInSAR Time-Series into 3-D in Combination with GPS in the Case of Low Strain Rates: An Application to the Hyblean Plateau, Sicily, Italy Open
Differential Interferometric SAR (DInSAR) time-series techniques can be used to derive surface displacement rates with accuracies of 1 mm/year, by measuring the one-dimensional distance change between a satellite and the surface over time.…