README.md

metadata

license: other
license_name: copernicus-dem-eula
license_link: >-
  https://spacedata.copernicus.eu/documents/20123/121286/CSCDA_ESA_Mission-specific+Annex.pdf
pretty_name: World Copernicus 30 m DEM (Cloud-Optimized GeoTIFF)
tags:
  - geospatial
  - dem
  - digital-elevation-model
  - elevation
  - raster
  - cog
  - cloud-optimized-geotiff
  - copernicus
  - earth-observation

World Copernicus 30 m DEM — Cloud-Optimized GeoTIFF

A single-file, global digital elevation model at ~30 m resolution, packaged as a Cloud-Optimized GeoTIFF (COG) so it can be read by range request directly from the Hub (no full download needed). Derived from Copernicus DEM data.

File

File	Description
copernicus_world_30m_lerc.cog.tif	Global 30 m elevation, COG, LERC_ZSTD compressed

Raster specification

Property	Value
Dimensions	1,296,005 × 626,400 px
Bands	1 (elevation, Float32, meters)
CRS	EPSG:4326 (WGS 84, geographic)
Pixel size	0.0002777778° ≈ 1 arc-second (~30 m at equator)
Extent	lon −180.0014 → 180.0000, lat −89.9999 → 84.0001
Layout	COG, 512 × 512 internal tiles, BAND interleave
Compression	LERC_ZSTD, MAX_Z_ERROR=1 (≤ 1 m vertical error)
Overviews	11 levels (down to 633 × 306)
NoData	none set

Reading without downloading

The COG layout + overviews let clients stream only the tiles/zoom they need.

GDAL (vsicurl):

gdalinfo /vsicurl/https://huggingface.co/datasets/OneAvailableUsername/worldcog/resolve/main/copernicus_world_30m_lerc.cog.tif

Python (rasterio):

import rasterio
url = "https://huggingface.co/datasets/OneAvailableUsername/worldcog/resolve/main/copernicus_world_30m_lerc.cog.tif"
with rasterio.open(url) as src:
    print(src.profile)
    # windowed read of a small AOI, only the needed tiles are fetched
    window = rasterio.windows.from_bounds(144.9, -37.9, 145.1, -37.7, src.transform)
    elev = src.read(1, window=window)

Notes

• Values are ellipsoidal/orthometric elevations in meters as provided by the source Copernicus DEM product.
• LERC_ZSTD is lossy to a bounded 1 m vertical error — suitable for visualization and most analysis, not for sub-meter vertical work.

Attribution & licence

Produced from Copernicus DEM © ESA / European Commission. Use is subject to the Copernicus DEM licence terms — attribute the source when redistributing or publishing derived products. Confirm the exact source product (GLO-30 / GLO-90 / EEA-10) and licence before downstream use.