74539266-4a28-4148-b252-a9b3e4c8720b dataset German Aerospace Center (DLR) geoservice@dlr.de 2024-06-20T14:12:15 ISO 19115-1:2014/19139 1.0 3 61109 90 54789 90 1 1 false EPSG:3031 TanDEM-X - PolarDEM - Antarctica, 90m 2020-07-21T12:13:30 https://geoservice.dlr.de/catalogue/srv/metadata/74539266-4a28-4148-b252-a9b3e4c8720b DOI: 10.15489/9jhr18jepi65 The TanDEM-X PolarDEM is a project developed by the German Remote Sensing Data Center (DFD) at the German Aerospace Center (DLR) within the activities of the TanDEM-X mission. It is a framework for the provision of derivatives of the global Digital Elevation Model (DEM) of the TanDEM-X mission for Polar Regions. The TanDEM-X PolarDEM 90m of Antarctica is a gap-free and edited version of the TanDEM-X 90m digital elevation model (DEM). The TanDEM-X PolarDEM 90m of Antarctica is provided in Antarctic Polar Stereographic projection (EPSG:3031) with a pixel spacing of 90 meters. The DEM elevation values represent ellipsoidal heights relative to the WGS84 ellipsoid. The majority of the data were acquired between April 2013 and October 2014. The TanDEM-X PolarDEM 90m of Antarctica is split into four tiles. For more information concerning the TanDEM-X PolarDEM, the reader is referred to: https://www.dlr.de/eoc/en/desktopdefault.aspx/tabid-11882/20871_read-66374/ The main objective of the TanDEM-X PolarDEM project is to provide derivatives of the global Digital Elevation Model (DEM) of the TanDEM-X mission for Polar Regions. German Aerospace Center (DLR) td-polardem@dlr.de German Aerospace Center (DLR) geoservice@dlr.de Birgit Wessel German Aerospace Center (DLR) birgit.wessel@dlr.de Martin Huber German Aerospace Center (DLR) martin.huber@dlr.de https://geoservice.dlr.de/catalogue/srv/api/records/74539266-4a28-4148-b252-a9b3e4c8720b/attachments/polardem_antarctica_ql.jpg large_thumbnail https://geoservice.dlr.de/catalogue/srv/api/records/74539266-4a28-4148-b252-a9b3e4c8720b/attachments/polardem_antarctica_ql_s.jpg thumbnail TanDEM-X Digital Elevation Model TDX-1 TSX-1 SAR X-Band PolarDEM Antarctica inspireidentifiziert Höhe GEMET - INSPIRE themes, version 1.0 2008-06-01 Global Spatial scope 2019-05-22 Nutzungseinschränkungen: Das DLR ist nicht haftbar für Schäden, die sich aus der Nutzung ergeben. / Use Limitations: DLR not liable for damage resulting from use. Öffentlicher Zugriff beschränkt entsprechend Artikel 13(1)(e) der INSPIRE-Richtlinie: e) aufgrund nachteiliger Auswirkungen auf die Rechte des geistigen Eigentums License: https://geoservice.dlr.de/resources/licenses/polardem90/TanDEM-X-PolarDEM_User_Licence.pdf 180000 elevation -180.00 180.00 -90.00 -60.00 2013-04-29T04:28:28 2017-09-07T08:24:10 GeoTIFF https://download.geoservice.dlr.de/TDM_POLARDEM90/files/ANTARCTICA/ WWW:DOWNLOAD-1.0-http--download HTTP download (PolarDEM Antarctica) https://download.geoservice.dlr.de/TDM_POLARDEM90/ANTARCTICA/ WWW:LINK-1.0-http--link EOC Download Service EOC Download Service (PolarDEM90) https://tandemx-science.dlr.de/ WWW:LINK-1.0-http--link TanDEM-X DEM access - scientific users Webpage with links and description for accessing TanDEM-X elevation models for scientific users. https://www.intelligence-airbusds.com/ WWW:LINK-1.0-http--link TanDEM-X DEM access - non-scientific users Webpage for accessing/ordering TanDEM-X elevation models for non-scientific users. https://geoservice.dlr.de/web/dataguide/tdm90/ WWW:LINK-1.0-http--link TDM90 - EOC Geoservice Data Guide EOC Geoservice Data Guide https://geoservice.dlr.de/web/maps/tdm:polardem90:antarctica WWW:LINK-1.0-http--link EOC Geoservice Map Context EOC Geoservice Map Context (tdm:polardem90:antarctica) https://geoservice.dlr.de/eoc/elevation/wms? OGC:WMS TDM_POLARDEM90_ANT_DEM WMS Access: TanDEM-X PolarDEM 90m of Antarctica (DEM) https://geoservice.dlr.de/eoc/elevation/wms? OGC:WMS TDM_POLARDEM90_ANT_HSC WMS Access: TanDEM-X PolarDEM 90m Hillshade Combined of Antarctica (HSC) https://geoservice.dlr.de/eoc/elevation/wms? OGC:WMS TDM_POLARDEM90_ANT_HSM WMS Access: TanDEM-X PolarDEM 90m Hillshade Multidirectional of Antarctica (HSM) https://geoservice.dlr.de/eoc/elevation/wms?SERVICE=WMS&REQUEST=GetCapabilities OGC:WMS-http-get-capabilities Conformity_001 INSPIRE VERORDNUNG (EG) Nr. 1089/2010 DER KOMMISSION vom 23. November 2010 zur Durchführung der Richtlinie 2007/2/EG des Europäischen Parlaments und des Rates hinsichtlich der Interoperabilität von Geodatensätzen und -diensten 2010-12-08 See the referenced specification true The PolarDEM is a derivative of the global TanDEM-X product provided by the TanDEM-X mission. The production steps comprised the following steps: - gaps in the global TanDEM-X DEM are filled using additional TanDEM-X acquisitions where possible - the editing process comprises a smoothing of noisy areas, the removal of voids and a replacement of frozen and partially open sea-ice areas with geoid undulations. A semi-automatic approach for coastline delineation was developed and applied to identify the water areas and assign homogeneous height values. - the editing and gap filling was applied to the TanDEM-X DEM products in their original spacing in geographic coordinates. The TanDEM-X PolarDEM is finally transformed into a polar stereographic projection with a homogeneous metric spacing in northing and easting. For more information concerning the TanDEM-X PolarDEM product, the reader is referred to https://www.dlr.de/eoc/en/desktopdefault.aspx/tabid-11882/20871_read-66374/ and: Wessel, B., Huber, M., Wohlfart, C., Bertram, A., Osterkamp, N., Marschalk, U., Gruber, A., Reuß, F., Abdullahi, S., Georg, I., and Roth, A.: TanDEM-X PolarDEM 90 m of Antarctica: Generation and error characterization, The Cryosphere Discuss. [preprint], https://doi.org/10.5194/tc-2021-19, in review, 2021. TanDEM-X PolarDEM Processing: Data: The PolarDEM is based on the global TanDEM-X DEM and additional TanDEM-X acquisitions which are used for gap filling. Geoid undulations from the Earth Gravitational Model 2008 (EGM2008) are used to replace open sea elevations. Processing: DEM gap filling is performed with additional TanDEM-X acquisitions utilizing the Mosaicking and Calibration Processor (MCP) of the TanDEM-X mission. Water body detection, flattening, smoothing and interpolation of outliers and voids is performed within the editing process. The resulting DEM is transformed into a stereographic projection with a homogeneous metric spacing in northing and easting. Quality Assurance: An interactive quality control of the DEM gap filling as well as the PolarDEM generation is performed. The resulting PolarDEM is e.g. compared to the global TanDEM-X DEM.