ISLSCP II Global Elevation Derivatives from HYDRO1k

Coarse-scale global elevation and derived parameters at 1.0 and 0.5-degree resolutions were developed for the International Satellite Land Surface Climatology Project (ISLSCP) Initiative II. The dataset provides statistical moments up to the fourth to describe sub-cell distributions of parameters like elevation, slope, aspect, and compound topographic index. It is derived from the HYDRO1k product, which has a native 1 km resolution.

Use Cases

• Global climate and land surface modeling using aggregated elevation statistics at 0.5 and 1.0-degree grids.
• Hydrological analysis leveraging derived parameters like slope, aspect, and compound topographic index.
• Statistical description of sub-grid terrain variability for model parameterization up to the fourth moment.

Strengths

• Derived from HYDRO1k, a high-resolution (1 km) global database of elevation derivatives.
• Provides statistical information up to the fourth moment for sub-cell distribution analysis.
• Available at two standardized spatial resolutions (0.5 and 1.0 degrees) for global modeling.

Limitations

• Specific column names, row counts, and dataset size are not provided by any source.
• Conflicting 'last updated' dates exist: one source reports 2026-03-13, another reports 1995-12-31.

Provenance

Source

ORNL_CLOUD (Oak Ridge National Laboratory Distributed Active Archive Center). Derived from the USGS/EROS HYDRO1k product.

Collection Method

Statistical aggregation and derivation from the 1 km resolution HYDRO1k database.

Freshness

2026-03-13 01:24:11.589567

Geography

Global