Geomorpho90m: Global High-Resolution Geomorphometric Layers

Geomorpho90m is a global dataset of 26 standardized geomorphometric variables derived from the MERIT-Digital Elevation Model. The variables, describing elevation change rates, ruggedness, and geomorphological forms, are available at 90m, 250m, and 100m spatial resolutions. It was developed by Giuseppe Amatulli of Yale University and published in Nature Scientific Data.

Use Cases

• Modeling hydrological flow and watershed delineation based on terrain derivatives.
• Analyzing ecological niche distributions based on topographic ruggedness and form.
• Simulating climate processes influenced by terrain relief and elevation gradients.
• Conducting geomorphological feature extraction and landform classification.

Strengths

• Derived from the MERIT-DEM, described as the best global, high-resolution DEM available.
• Offers 26 fully-standardized geomorphometric variables.
• Provides data at three spatial resolutions: ~90m, ~250m, and 100m.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.

Provenance

Source

Yale University (Giuseppe Amatulli)

Collection Method

Derived from the MERIT-Digital Elevation Model.

Geography

Global