10.5880/GFZ.1.2.2024.002 Abrykosov, Oleh Oleh Abrykosov 0000-0003-1463-412X GFZ German Research Centre for Geosciences, Potsdam, Germany Ince, E. Sinem E. Sinem Ince 0000-0002-3393-1392 GFZ German Research Centre for Geosciences, Potsdam, Germany Förste, Christoph Christoph Förste 0000-0002-4476-9183 GFZ German Research Centre for Geosciences, Potsdam, Germany GFZ Data Services 2024 Earth relief grids topography ice surface elevation bedrock elevation ice thickness land-type masks Earth Observation Satellites > TDX EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHY EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > LANDFORMS EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > SURFACE ROUGHNESS EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TOPOGRAPHIC EFFECTS EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TOPOGRAPHICAL RELIEF EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHY EARTH SCIENCE SERVICES > MODELS > DIGITAL ELEVATION/DIGITAL TERRAIN MODELS Abrykosov, Oleh Oleh Abrykosov 0000-0003-1463-412X GFZ German Research Centre for Geosciences, Potsdam, Germany Abrykosov, Oleh Oleh Abrykosov 0000-0003-1463-412X GFZ German Research Centre for Geosciences, Potsdam, Germany Abrykosov, Oleh Oleh Abrykosov 0000-0003-1463-412X GFZ German Research Centre for Geosciences, Potsdam, Germany Ince, E. Sinem E. Sinem Ince 0000-0002-3393-1392 GFZ German Research Centre for Geosciences, Potsdam, Germany Ince, E. Sinem E. Sinem Ince 0000-0002-3393-1392 GFZ German Research Centre for Geosciences, Potsdam, Germany Förste, Christoph Christoph Förste 0000-0002-4476-9183 GFZ German Research Centre for Geosciences, Potsdam, Germany Ince, E. Sinem GFZ German Research Centre for Geosciences, Potsdam, Germany Dataset 10.5880/ICGEM.2015.1 10.5194/tc-7-375-2013 10.5285/e0f0bb80-ab44-2739-e053-6c86abc0289c 10.5285/f98b053b-0cbc-6c23-e053-6c86abc0af7b 10.1016/j.jag.2015.03.001 10.1038/s41597-022-01132-9 10.1002/2017GL074954 10.1038/s41561-019-0510-8 10.5067/FPSU0V1MWUB6 10.5067/GMEVBWFLWA7X 10.25921/fd45-gt74 https://tandemx-science.dlr.de 10.1016/j.isprsjprs.2018.02.017 10.1029/2019GC008515 CC BY 4.0 We merged various digital elevation models (DEMs) published in the recent years and created an up-to-date composite and global solution for Earth’s topography and bathymetry. Compared to the original geographically limited data sets, the final product is a seamless merged grid which additionally provides high resolution and accuracy topography and depth globally.

We provide Earth relief grids w.r.t EIGEN-6C4 global geoid in terms of surface and bedrock elevation, ice thickness, and land-type masks which have been substantially improved w.r.t the global grids found in literature. We assessed the quality of the merged surface elevations w.r.t the heights given for about globally distributed 5000 ITRF stations. The merged surface model shows improvement of a factor of three w.r.t the other commonly used DEMs in terms of standard deviation. In addition to the four grids, GDEMM2024_SUR, GDEMM2024_BED, GDEMM2024_ICE, and GDEMM2024_LTM, we provide two additional files, the surface elevation without water (GDEMM2024_TBI) and the GDEMM2024_GEO file to transform the heights above EIGEN_6C4 geoid to ellipsoidal heights. The final grids are provided both in 30 arcsec and 1arcmin resolution and in GeoTIFF format which is one of the standards that is available in GMT (Generic Mapping Tools), GDAL (Geospatial Data Abstraction Library) and in almost all GIS software systems.
Global -180 180 -90 90 German Research Foundation (DFG) 505165206 Research Grant