ISLSCP II HYDRO1K ELEVATION-DERIVED PRODUCTS

Global coarse-scale elevation and elevation-based parameters developed for the International Satellite Land Surface Climatology Project (ISLSCP) Initiative II. The data set provides statistical information up to the fourth moment for parameters like elevation, slope, and aspect at 1.0 and 0.5-degree spatial resolutions. It was derived from the HYDRO1k product by Kristine L. Verdin to support a wide variety of global modeling activities.

Use Cases

• Modeling global land surface climatology based on elevation-derived parameters.
• Statistical analysis of sub-cell topographic distributions based on the provided moments.
• Deriving hydrological indices like compound topographic index from the underlying HYDRO1k data.
• Supporting coarse-resolution Earth system models with standardized elevation-based inputs.

Strengths

• Derived from the HYDRO1k product, which has a native 1 km resolution and is described as the highest resolution global database of standard elevation-based derivatives.
• Provides statistical information up to the fourth moment for parameters, allowing a good statistical description of sub-cell distributions.
• Available at two standardized coarse spatial resolutions (1.0 and 0.5-degree) for global modeling compatibility.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.
• Row count and file size are unknown, which may limit suitability assessment.

Provenance

Source

ORNL DAAC (Oak Ridge National Laboratory Distributed Active Archive Center).

Collection Method

Derived from the HYDRO1k product, which has a native spatial resolution of 1 km.

Time Range

Temporal coverage is not specified in the provided description.

Freshness

Last updated date is unknown.

Geography

Global coverage.