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Towards the global HydroSHEDS-X dataset: DEM pre-processing for the derivation of rivers and catchments

Warmedinger, Leena und Tubbesing, Raphael und Huber, Martin und Anand, Mira und Lehner, Bernhard und Roth, Achim und Walper, Carolin (2022) Towards the global HydroSHEDS-X dataset: DEM pre-processing for the derivation of rivers and catchments. Living Planet Symposium 2022, 2022-05-23 - 2022-05-27, Bonn, Deutschland.

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Kurzfassung

The increased availability and accuracy of recent remote sensing data accelerates the development of data products for hydrological modelling. Most hydrological models rely on the accurate representation of the Earth’s terrestrial surface including all waterways from small mountain streams to great lowland rivers in order to compute discharge. In light of this, the creation of the HydroSHEDS-X database, which is currently developed in an international collaborative project between the German Aerospace Center (DLR), McGill University, Confluvio Consulting, and the World Wildlife Fund, represents a new source for global digital hydrographic information. HydroSHEDS-X is the second version of the well-established HydroSHEDS database, which is freely available at https://hydrosheds.org. While the first version was derived from the digital elevation model (DEM) of the Shuttle Radar Topography Mission (SRTM), the foundation of HydroSHEDS-X are the elevation data of the TanDEM-X mission (TerraSAR-X add-on for Digital Elevation Measurement), which was created in partnership between the German Aerospace Center (DLR) and Airbus. HydroSHEDS-X benefits from the higher resolution of the underlying TanDEM-X DEM given its resolution of 0.4 arc-seconds worldwide including regions with latitudes higher than 60° North, which are not covered by the SRTM DEM. Details of this high-resolution DEM are preserved in the HydroSHEDS-X dataset by applying enhanced pre-processing techniques. This pre-processing of the elevation data comprises DEM infills for invalid and unreliable areas, an automatic coastline delineation with manual quality control, the generation of an open water mask, and the reduction that are caused by distortions of vegetation and settlements. The pre-processed DEM is further treated at a resolution of 3 arc-seconds to obtain a hydrologically conditioned DEM. Derived from this hydrologically conditioned version of the DEM, the HydroSHEDS-X core products comprise flow direction and flow accumulation maps as gridded datasets. The core products are complemented with secondary information on river networks, lake shorelines, catchment boundaries, and their hydro-environmental attributes in vector format. Finally, the database is completed with associated products. Available in standardized spatial units and at multiple scales starting from a resolution of 3 arc-seconds, HydroSHEDS-X is fully compatible with its original version and thus provides a consistent and easy-to-use database for hydrological applications from local to global scale. The main release of HydroSHEDS-X is scheduled for 2022 under a free license.

elib-URL des Eintrags:https://elib.dlr.de/187271/
Dokumentart:Konferenzbeitrag (Poster)
Titel:Towards the global HydroSHEDS-X dataset: DEM pre-processing for the derivation of rivers and catchments
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Warmedinger, LeenaLeenaJulia.Warmedinger (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Tubbesing, RaphaelRaphael.Tubbesing (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Huber, MartinMartin.Huber (at) dlr.dehttps://orcid.org/0000-0003-2665-2149NICHT SPEZIFIZIERT
Anand, Miramira.anand (at) confluvio.comNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Lehner, Bernhardbernhard.lehner (at) mcgill.cahttps://orcid.org/0000-0003-3712-2581NICHT SPEZIFIZIERT
Roth, AchimAchim.Roth (at) dlr.dehttps://orcid.org/0000-0002-8913-0930NICHT SPEZIFIZIERT
Walper, CarolinCarolin.Walper (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2022
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:TanDEM-X, DEM Editing, Hydrographie
Veranstaltungstitel:Living Planet Symposium 2022
Veranstaltungsort:Bonn, Deutschland
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:23 Mai 2022
Veranstaltungsende:27 Mai 2022
Veranstalter :ESA
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Geoprodukte u. - Systeme, Services
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum > Dynamik der Landoberfläche
Hinterlegt von: Warmedinger, Leena Julia
Hinterlegt am:27 Jul 2022 09:55
Letzte Änderung:24 Apr 2024 20:48

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