Cloud services for global elevation data - Geomorphometry Coffee Talks #3
Автор: International Society for Geomorphometry
Загружено: 2023-05-04
Просмотров: 28
Описание:
#DEM #OpenGeoHub #openscience
In recent years, a number of global public topography datasets at high spatial resolutions (30m) have been released, including GLO-30 and ALOS AW3D. These can be combined with MERITDEM and ICESat-2 + GEDI point-based ground surface elevation data and global canopy height estimates to produce an ensemble estimate of the terrain/land surface height. Our results for Continental Europe show that machine learning can be used to remove canopy and buildings, although some post-processing is still needed to create hydrologically correct DTMs. The produced ensemble model is shared as Cloud-Optimized GeoTIFFs to allow for unrestricted access simply via QGIS or similar. Google Earth, Microsoft Planetary computer, OpenEO.cloud further provide "free" computing capacity allowing for the testing of algorithms and methods. These types of data infrastructures will revolutionize Geomorphometry and lead to more accurate, more usable and easier to access flood / landslide risks maps and similar.
Slides: https://docs.google.com/presentation/...
Github code: https://github.com/openlandmap/spatia...
The Geomorphometry Coffee Talks (GCTs) are ane opportunity to discuss, exchange, initiate, train, present, outline topics, research agendas, papers, questions in an informal way between our main biannual conferences.
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