Products
Product Description Document
The Product Description Document provides an overview of the product suites and gives a top-level description of the primary data and metadata layers in each Level-2 / Level-3 product generated by the OPERA Science Data System.
Product Validation Document
The Product Validation Document outlines the scopes, objectives, and timelines associated with the validation of each OPERA product.
Product Specification Documents and Product Samples
The Product Specification Documents provide the detailed information about the contents and specifications of a given OPERA product. Specifically, this includes the structure and specifics of the product layers and all product metadata.
These documents together with sample products and basic user visualization guides are provided for each OPERA product suite below.
OPERA is developing three Level-3 products that respond to the needs identified by various federal agencies during the 2018 cycle (a.k.a. Cycle 2) of the Satellite Needs Working Group (SNWG) development activities, namely:
- A near-global Dynamic Surface Water Extent (DSWx) product suite
- A near-global Surface disturbance (DIST) product suite
- A North America* Surface Displacement (DISP) product suite
In addition, OPERA is producing two intermediate Level-2 data products:
- A North America* Coregistered Single-look Complex (CSLC) product suite
- A near-global land-surface Radiometric Terrain Corrected (RTC) SAR backscatter product
Near-global corresponds to all landmasses excluding Antarctica. North America* corresponds to the United States (USA) and U.S. Territories, Canada within 200 km of the U.S. border, and all mainland countries from the southern US border up to and including Panama.
The image above is an example of DSWx by Dr. John Jones compared with NAIP data (copyright 2021)
OPERA is releasing these products according to a staggered schedule as follows:
HLS = Harmonized Landsat Sentinel-2; S1 = Sentinel-1; NISAR = NASA-ISRO Synthetic Aperture Radar; SWOT = Surface Water and Ocean Topography.
The following table provides a summary of key product characteristics including the spatial coverage and resolution, the start of the product record, and the temporal sampling of the sensors used as input for the products:
Summary of OPERA Product characteristics. * = United States (USA) and U.S. Territories, Canada within 200 km of the US border, and all mainland countries from the southern U.S. border up to and including Panama. ** = all land-masses excluding Antarctica. ***This indicates the beginning of the product record, not the beginning of OPERA processing assuming nominal sensor availability.
CL#21-6388