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TerEcoData: a webservice to monitor terrestrial ecology changes from Earth Observing systems
Aline Deprez1,2, Jean-Phillipe Malet1,2,3, David Michea2, Anne Puissant1,4
1Data-Terra / THEIA data hub – UAR 2013 CNRS, Montpellier, France; 2École et Observatoire des Sciences de la Terre/EOST – UAR 830 CNRS, Université de Strasbourg, Strasbourg, France; 3Institut Terre et Environnement de Strasbourg/ITES – UMR 7063 CNRS, Université de Strasbourg, Strasbourg, France; 4Laboratoire Image, Ville, Environnement/LIVE – UMR 7362 CNRS, Université de Strasbourg, Strasbourg, France
Natural landscapes (grasslands, meadows, forests) are essential for environmental well-being because of their provision of ecosystem services. These landscapes are under increasing pressure from climate change, resource extraction, and human-induced disturbances. The results are changes in habitats most of the time accompanied with a loss of species diversity. Satellite EO enables global and systematic monitoring of biodiversity dynamics. The objective of this demonstration is to present the Terrestrial Ecology Data service (TerEcoData) developed by the French Data-Terra/THEIA Research Infrastructure which providing advanced indicators of ecosystem properties (space-time vegetation changes, plant phenological stages) from high-resolution Sentinel-2 time series. The on-demand service offers the creation of multiple products according to the user needs and expertise in satellite remote sensing. The web-service allows selecting the period and region of interest, the indicators to be computed and their representation (pixel, polygon). It is based on a datacube technology to manage and process massive satellite datasets and derive zonal statistics and time series, and is optimized for high-performance computing environments. The products can be visualized on-line and downloaded. Since only the needed information is extracted, the products are directly usable on a simple desktop computer for further advanced processing. The functionalities of TerEcoData and examples of products to quantify ecological changes over several mountainous (European Alpine, South French Alps), agricultural (Grand-Est Region, France), tropical forests (Zambia) and coastal environments (South Madagascar) will be presented. The service was developed with the support of the CNES / Space Climate Observatory program.
The service demonstration is composed of three parts: - 1. A presentation of the main functionalities of the service - 2. A on-line trial of the service with a specific focus on the on-line visualization of the products - 3. A discussion with the audience to determine potential improvements (functionalities, data, ergonomy) to complement the service.
