OPERA CSLC-S1: Coregistered Sentinel-1 Radar Imagery for North America

OPERA CSLC-S1 validated products are coregistered Single Look Complex (SLC) radar images derived from Copernicus Sentinel-1A and Sentinel-1B Interferometric Wide data. Each product contains geocoded amplitude and phase information for a single burst, distributed as HDF5 files with a 5x10 meter posting in UTM/Polar stereographic projections. The dataset covers North America, including the USA, its territories, Canada within 200 km of the U.S. border, and mainland countries down to Panama.

Use Cases

• Measuring ground deformation from earthquakes or volcanoes based on the phase information representing residual distance and target movement.
• Analyzing surface properties like roughness and slope using the amplitude data determined by ground characteristics.
• Conducting change detection over time using the coregistered stack of SLC images for consistent geometry.
• Correcting for atmospheric propagation delays in radar signal analysis using the provided phase data.

Strengths

• Products are precisely coregistered to a standard map projection, facilitating time-series analysis.
• Data includes both amplitude and phase components, enabling advanced radar interferometry techniques.
• Coverage is defined for a specific, large region (North America from Panama to northern Canada).
• Available under a permissive CC-BY-4.0 license, as stated on two platforms.

Limitations

• Key metadata such as row count, size, last update date, and complete column list is unavailable across all sources.
• Spatial coverage is restricted to North America, limiting global applicability.
• Static radar-geometry layers are provided separately, requiring users to manage and integrate multiple data products.

Provenance

Source

Derived from Copernicus Sentinel-1A and Sentinel-1B data by the OPERA project; organization listed as ASF on one platform.

Collection Method

Processed from Sentinel-1 Interferometric Wide (IW) SLC data, coregistered and geocoded using a Digital Elevation Model.

Time Range

One source mentions data from 2016-2025, but this is not explicitly confirmed as the dataset's temporal coverage.

Freshness

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Geography

North America, including the USA, U.S. Territories, Canada within 200 km of the U.S. border, and mainland countries from the southern U.S. border down to and including Panama.