Sentinel-1A SAR VV Backscatter Quicklooks: Medium-Resolution Ocean Data

Sentinel-1A SAR VV Backscatter Quicklooks are medium-resolution (approximately 20m pixel size) radar images processed by CSIRO for the eReefs Phase 5 project. The product is derived from Level 1 IW GRD data with VV polarization, reprojected onto a regular grid and filtered to reduce speckle. It is available as a multi-format geospatial service for environmental monitoring.

Use Cases

• Monitoring ocean surface roughness and wind patterns based on calibrated VV backscatter.
• Detecting oil spills or marine pollution using speckle-filtered radar imagery.
• Supporting coastal change detection and habitat mapping through georeferenced quicklooks.
• Validating oceanographic models with regularly gridded, medium-resolution satellite data.

Strengths

• Data is reprojected onto a regular grid and calibrated using the SNAP toolbox, ensuring geometric consistency.
• Speckle noise is reduced via a three-pass combination of radiometric filters, improving interpretability.
• Product is part of the multi-phase eReefs project by CSIRO, indicating a structured scientific program.

Limitations

• Critical metadata such as row count, file size, license, and specific column names are not provided.
• The dataset description is repeated verbatim across multiple entries, suggesting sparse or templated metadata.
• Only VV polarization is specified, limiting analysis compared to dual-polarization SAR data.

Provenance

Source

CSIRO, produced under the eReefs Phase 5 project.

Collection Method

Derived from Sentinel-1 Level 1 IW GRD data using the SNAP toolbox, with nearest neighbor resampling and radiometric filtering.

Freshness

Last updated 2026-06-04 08:06:17.105696

Geography

Likely covers the Great Barrier Reef region (inferred from eReefs project focus), but explicit spatial coverage is not stated.