NASA's OPERA project has discovered a processing error affecting DSWx-S1 data products generated from May 2025 onwards. This error is causing Sentinel-1A and Sentinel-1C data to be incorrectly mixed into a single product. Learn more.

OPERA

Observational Products for End-Users from Remote Sensing Analysis

NASA's Observational Products for End-Users from Remote Sensing Analysis (OPERA) project located at the Jet Propulsion Laboratory generates data products that help scientists understand key areas in Earth systems.

OPERA's focus areas include surface water extent, surface disturbance, surface displacement, and vertical land motion. These were selected in response to needs identified by the Satellite Needs Working Group (SNWG) in 2018 and 2020.

Learn more about OPERA's data products, workshops, and mission.

Data Centers

PO.DAAC

ASF DAAC

LP DAAC

OPERA Level-2 SAR Data Products

Coregistered Single-Look Complex from Sentinel-1 (CSLC-S1)

Data Center: ASF DAAC
Spatial Extent: USA and U.S. Territories, Canada within 200 km of the U.S. border, and all mainland countries from the southern U.S. border down to and including Panama
DOI (product description): 10.5067/SNWG/OPERA_L2_CSLC-S1_V1

Coregistered Single-Look Complex from Sentinel-1 Static Layers (CSLC-S1-STATIC)

Data Center: ASF DAAC
DOI (product description): 10.5067/SNWG/OPERA_L2_CSLC-S1-STATIC_V1

Radiometric Terrain-Corrected from Sentinel-1 (RTC-S1)

Data Center: ASF DAAC
Spatial Extent: Near Global (all land masses excluding Antarctica)
DOI (product description): 10.5067/SNWG/OPERA_L2_RTC-S1_V1

Radiometric Terrain-Corrected SAR from Sentinel-1 Static Layers (RTC-S1-STATIC)

Data Center: ASF DAAC
DOI (product description): 10.5067/SNWG/OPERA_L2_RTC-S1-STATIC_V1

OPERA Level-3 SAR and Optical Data Products

Surface Displacement from Sentinel-1 (DISP-S1)

Data Center: ASF DAAC
Spatial Extent: USA and U.S. Territories, Canada within 200 km of the U.S. border, and all mainland countries from the southern U.S. border down to and including Panama
DOI (product description): 10.5067/SNWG/OPL3DISPS1-V1

Dynamic Surface Water eXtent (DSWx)

Data Center: PO.DAAC

Surface Disturbance (DIST)

Data Center: LP DAAC

OPERA Level 4 Data Products

Tropospheric Correction at Zenith (TROPO-ZENITH)

Data Center: ASF DAAC
Spatial Extent: Global
DOI (product description): 10.5067/SNWG/OPL4TROZEN-V1

OPERA Ancillary Data Products

ECMWF TROPO Data

Data Center: ASF DAAC
Spatial Extent: Global
Data Catalog product description

Product	Document / file	Description	Format	Download
CSLC-S1	Product Specification Document	Specifications of the OPERA Level-2 Coregistered Single-Look Complex (CSLC) product that uses Sentinel-1 SLC products as the primary image-based input. Accordingly, this data product is referred to by the short name CSLC-S1.	.pdf	CSLC-S1 Product Specification document
CSLC-S1	Algorithm Theoretical Basis Document (ATBD)	Provides an in-depth description of the algorithm employed for generating OPERA’s L2_CSLC_S1 products. Subsequent sections describe the algorithm’s implementation, its underlying mathematical assumptions, their implications on data quality, and relative and absolute geolocation accuracy. Furthermore, the document delves into the algorithm’s input data and the output products generated by the CSLC-S1 algorithm.	.pdf	CSLC-S1 ATBD
CSLC-S1-STATIC	Product Specification Document	Specifications of the OPERA Level-2 Radiometric Terrain-Corrected SAR Backscatter from Sentinel-1 (CSLC-S1) Static Layers (CSLC-S1-STATIC) product. It is distributed separately from the CSLC-S1 products, and it is only produced once (or a limited amount of times) for CSLC-S1 products characterized by the same burst identification string, i.e., for all the Sentinel-1 bursts covering the same geographical area on the ground. The CSLC-S1-STATIC contains both data raster layers (e.g., geocoded geometry layers) and product metadata.	.pdf	CSLC-S1-Static Product Specification document
CSLC-NI	Documentation	NISAR launched July 2025. Documents will be posted here as soon as they become available.	-	-
RTC-S1	Product Specification Document	Describes the specifications of the OPERA Level-2 Radiometric Terrain-Corrected (RTC) product that uses Sentinel-1 SLC data as the primary image-based input.	.pdf	RTC-S1 Product Specification document
RTC-S1 STATIC	Product Specification Document	The describes the specifications of the OPERA Level-2 Radiometric Terrain-Corrected SAR Backscatter from Sentinel-1 (RTC-S1) Static Layers (RTC-S1-STATIC) product. The RTC-S1-STATIC product provides radar geometry layers, such as local incidence angle or incidence angle, that describe the Sentinel-1 acquisition geometry associated with the OPERA RTC-S1 products with the same burst ID.	.pdf	RTC-S1-Static Product Specification document
RTC-NI	Documentation	NISAR launched July 2025. Documents will be posted here as soon as they become available.
DISP-S1	Product Specification Document	Describes the specifications of the OPERA Level-3 Land-Surface Displacement (DISP) product from Sentinel-1 (S1). It is generated from a sequence of Level 2 CSLC products and is a high-quality InSAR-derived displacement product with reduced decorrelation noise using a hybrid Persistent Scatterer (PS) and Distributed Scatterer (DS) time series processing approach. The DISP-S1 product provides information on anthropogenic and natural changes on Earth's surface, such as subsidence, tectonics, and landslides.	.pdf	DISP-S1 Product Specification document
DISP-NI	Documentation	NISAR launched July 2025. Documents will be posted here as soon as they become available.	-	-