Copernicus Digital Elevation Model (DEM) for Europe at 3 arc seconds (ca. 90 meter) resolution derived from Copernicus Global 30 meter DEM dataset

The Copernicus DEM is a Digital Surface Model (DSM) which represents the surface of the Earth including buildings, infrastructure and vegetation. The original GLO-30 provides worldwide coverage at 30 meters (refers to 10 arc seconds). Note that ocean areas do not have tiles, there one can assume height values equal to zero. Data is provided as Cloud Optimized GeoTIFFs. Note that the vertical unit for measurement of elevation height is meters.

The Copernicus DEM for Europe at 3 arcsec (0:00:03 = 0.00083333333 ~ 90 meter) in COG format has been derived from the Copernicus DEM GLO-30, mirrored on Open Data on AWS, dataset managed by Sinergise (https://registry.opendata.aws/copernicus-dem/).

Processing steps:

The original Copernicus GLO-30 DEM contains a relevant percentage of tiles with non-square pixels.

We created a mosaic map in https://gdal.org/drivers/raster/vrt.html format and defined within the VRT file the rule to apply cubic resampling while reading the data, i.e. importing them into GRASS GIS for further processing. We chose cubic instead of bilinear resampling since the height-width ratio of non-square pixels is up to 1:5. Hence, artefacts between adjacent tiles in rugged terrain could be minimized:

gdalbuildvrt -input_file_list list_geotiffs_MOOD.csv -r cubic -tr 0.000277777777777778 0.000277777777777778 Copernicus_DSM_30m_MOOD.vrt

In order to reduce the spatial resolution to 3 arc seconds, weighted resampling was performed in GRASS GIS (using r.resamp.stats -w) and the pixel values were scaled with 1000 (storing the pixels as integer values) for data volume reduction.

In addition, a hillshade raster map was derived from the resampled elevation map (using r.relief, GRASS GIS).

Eventually, we exported the elevation and hillshade raster maps in Cloud Optimized GeoTIFF (COG) format, along with SLD and QML style files.

Citation proposal
(2022) . Copernicus Digital Elevation Model (DEM) for Europe at 3 arc seconds (ca. 90 meter) resolution derived from Copernicus Global 30 meter DEM dataset. https://gdk.gdi-de.org/geonetwork/srv/api/records/c1b4ca8b-81ce-40f1-9100-c7ff5ca44069

INSPIRE
SDS

INSPIRE

Identification

File identifier: c1b4ca8b-81ce-40f1-9100-c7ff5ca44069 XML

Hierarchy level: Dataset

Online resource

Protocol: WWW:LINK-1.0-http--related

Resource identifier

code: 10.5281/zenodo.6211701

Metadata language: English

Spatial representation type: Grid

Encoding

Format: GeoTIFF

Version

Projection

code: Latitude-Longitude/WGS84 (EPSG: 4326)

Classification of data and services

Topic category

Elevation
Geoscientific information

Classification of data and services

Coupled resource

Classification of data and services

Coupled resource

Keywords

GEMET - INSPIRE themes, version 1.0 ( Theme )

Elevation

Other keywords

Keywords ( Theme )

digital terrain model
elevation
Copernicus
DEM
DSM
geomorphometry
environment

Keywords ( Place )

Europe

Keywords ( Discipline )

remote sensing
radar
space

Keywords ( Theme )

MOOD-H2020
Tularaemia
Lyme
TBE
WNV
USUTU
Mosquito borne Flaviviruses

Geographic coverage

Temporal reference

Temporal extent

Date ( Publication ): 2022-02-21

Quality and validity

Lineage: derived from Copernicus DEM GLO-30

Distance: 90 meters

Conformity

Explanation: See specified reference

Restrictions on access and use

Access constraints: Creative Commons Namensnennung - Weitergabe unter gleichen Bedingungen 4.0 International (CC-BY-SA 4.0)

Access constraints: { "id": "cc-by-sa/4.0", "name": "Creative Commons Namensnennung - Weitergabe unter gleichen Bedingungen 4.0 International", "url": "http://creativecommons.org/licenses/by-sa/4.0/", "quelle": "Source: mundialis" }