DEM

: Last Updated: 16 February 2023

The following is a reference list of GDEMs:

CFI Support	Name	Spacial Resolution	Coverage	Remarks
√	ACE-2	3 arcseconds (~90 m)	Global	- Available through NASA SEDAC - Produced by ESA/ESRIN - Composed of binary image tiles - Tiles of 15° latitude by 15° longitude - The data is 32-bit floating point - Null value is -32768 - WGS84 for sea surface - EGM96 for land surface - Sources: SRTM, SRTM 30, ACE-1, GLOBE, MSS
√	ACE-2	9 arcseconds (~270 m)
√	ACE-2	30 arcseconds (~1 km)
√	ACE-2	5 arcminutes (~10 km)
√	ASTER GDEM V1	1 arcseconds (~30 m)	Near Global (between 83N and 83S)	- Produced by NASA/JPL and METI/JSS - GeoTIFF - Acknowledged to be experimental/research grade - Released 2009
√	ASTER GDEM V2	1 arcseconds (~30 m)	Near Global (between 83N and 83S)	- Produced by NASA (USA) and METI (Japan) - GeoTIFF - Improved horizontal and vertical accuracy wrt v1 - Improved water body coverage and detection - Released 2011
√	ASTER GDEM V3	1 arcseconds (~30 m)	Near Global (between 83N and 83S)	- Produced by NASA (USA) and METI (Japan) - GeoTIFF - Improved horizontal and vertical accuracy wrt v2 - Improved water body coverage and detection - Released 2019
√	GETASSE 3.0	30 arcseconds (~1 km)	Global	- Produced by ESA/ESRIN - Composite of SRTM 30, ACE-1 and Mean Sea Surface - Reference ellipsoid: WGS84 - Released 2008
	GLOBE	30 arcseconds (~1 km)	Global	- Produced by NOAA - Released 1999 (pre-SRTM)
	GMTED2010	7.5 arcseconds (~250 meters)	Near Global (land areas from 84N to 56S; from 84°N to 90°S for several other products)	- Produced by USGS and NGA - GeoTIFF - Reference: EGM96 - Released 2010
	GMTED2010	15 arcseconds (~500 m)
	GMTED2010	30 arcseconds (~1 km)
	SRTM	3 arcseconds (~90 m)	Near Global (between 60N and 60S)	- Produced by NASA/JPL and NIMA - Contains voids - Released 2003
	SRTM 30	30 arcseconds (~1 km)	Near Global (between 60N and 60S)	- Produced by NASA/JPL and NIMA - SRTM averaged to 1km resolution - Released 2008.
√	TanDEM-X 90m	3 arcseconds (~90 m)	Global	- Produced by DLR, EADS Astrium and Infoterra - GeoTIFF format - Varying longitudinal pixel-spacing in function of latitude - Reference ellipsoid: WGS84 (realization G1150) - Land mass only coverage; sea areas marked as void - Note: 1 arcsecond and 0.4 arcseconds versions of TanDEM-X are available as commercial products. These versions are not supported by EOCFI.
	Copernicus DEM	10 m 30 m 90 m	Global	- Produced by Astrium (link) - Availalbe in 3 resolutions: * 10 m (EEA area) * 30 and 90 m (Global) - 30m and 90m versions are free and open - Based on TanDEM-X and other data - Coordinate Reference System: * Horizontal WGS84-G1150 (EPSG 4326) * Vertical EGM2008 (EPSG 3855) - Releases: 2019, 2020, 2021 and 2022
√	Copernicus DEM - EOCFI SW Generic format	30 m 90 m	Global	Based on Copernicus DEM converted to format compatible with EOCFI SW (Generic DEM format) - Release: 2023 Availability on request: This email address is being protected from spambots. You need JavaScript enabled to view it.