ELEVATION PREPARATION

Prepare GLO-30 elevation for your study area.

Download supported public elevation files, inspect their original values, and prepare a local raster that retains the product's scientific meaning.

Development workflow guide · Scope checked October 2, 2026

What this workflow produces

A local project containing Copernicus DEM GLO-30 Public source tiles and supported clipped or same-grid mosaicked GeoTIFF results, preserving Float32 elevation values.

This describes the current development build. Public installation instructions will follow the verified Windows release.

GeoD development workspace displaying a processed Copernicus GLO-30 elevation raster in a Chinese interface.
Actual development capture · Copernicus DEM GLO-30 Public processing. The current captured interface is in Chinese.

From area to local project

  1. Check public coverage for the area

    Select Copernicus DEM GLO-30 Public and inspect available tiles. Coverage depends on the public product; an area without a tile may be outside its published coverage.

  2. Download the elevation source tiles

    Keep the original files in your project with their source and product identity. Read grid spacing from the actual file metadata.

  3. Inspect original elevation values

    Use the local display and source-pixel inspection. Elevations are in meters with the EGM2008 vertical reference. Zero and negative elevations can be valid.

  4. Clip or mosaic supported grids

    Prepare compatible source tiles using the supported project operation. Preserve Float32 values and keep display stretching separate from the output measurements.

  5. Confirm the downstream interpretation

    Check the resulting GeoTIFF's extent, horizontal CRS, grid spacing, values, and vertical reference before using it in your next GIS task.

Current scope

GLO-30 is a digital surface model and includes buildings and vegetation. Its horizontal grid is geographic EPSG:4326, so angular spacing should not be described as a constant number of meters. General reprojection, different-spacing resampling, and terrain analysis remain pending. This workflow does not establish support for GLO-90 or protected NASA elevation products.

Review all data and access requirements

Continue in your GIS workflow

Continue with the GIS tools you use for reprojection and terrain analysis. Preserve product attribution and vertical-reference information with the deliverable.