OPERA Dynamic Surface Water Extent from Sentinel-1 (Version 1)
(OPERA_L3_DSWX-S1_V1)| Version | 1.0 |
| Processing Level | 3 |
| Start/Stop Date | 2023-Dec-01 to Present |
| Short Name | OPERA_L3_DSWX-S1_V1 |
| Description | This dataset contains Level-3 Dynamic OPERA Surface Water Extent from Sentinel-1 (DSWx-S1) product version 1. DSWx-S1 provides near-global geographical mapping of surface water extent over land at a spatial resolution of 30 meters over the Military Grid reference System (MGRS) grid system, with a temporal revisit frequency between 6-12 days. Using Sentinel-1 radar observations, DSWx-S1 maps open inland water bodies greater than 3 hectares and 200 meters in width, irrespective of cloud conditions and daylight illumination that often pose challenges to optical sensors. Forward production of the DSWx-S1 data record began in Sept 2024. Each product is distributed as a set of 3 GeoTIFF (Geographic Tagged Image File Format) files including water classification and associated confidence layers. The OPERA DSWx-S1 product contains modified Copernicus Sentinel data (2024-2025). To access the calibration/validation database for OPERA Dynamic Surface Water Extent Products, please contact podaac@podaac.jpl.nasa.gov OPERA was informed by the Satellite Needs Working Group (SNWG), an interagency effort of the U.S. Government dedicated to identifying and addressing Earth observation needs across U.S. civilian federal agencies. |
| DOI | 10.5067/OPDSWS1-L3V1 |
| Measurement | TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER PROCESSES/MEASUREMENTS |
| Platform/Sensor | Sentinel-1A / Platform Name: Sentinel-1A (Sentinel-1A) Orbit Period: 98.6 minutes Inclination Angle: 98.18 degrees SENTINEL-1 C-SAR SENSOR Name: SENTINEL-1 C-SAR (SENTINEL-1 C-SAR) Sentinel-1B / Platform Name: Sentinel-1B (Sentinel-1B) Orbit Period: 98.6 minutes Inclination Angle: 98.18 degrees SENTINEL-1 C-SAR SENSOR Name: SENTINEL-1 C-SAR (SENTINEL-1 C-SAR) |
| Project | Observational Products for End-Users from Remote Sensing Analysis, Satellite Needs Working Group (SNWG/OPERA) |
| Data Provider | Publisher: PO.DAAC Creator: OPERA Release Place: PO.DAAC Release Date: 2024-Aug-19 |
| Format | Cloud Optimized GeoTIFF |
| Keyword(s) | surface water, surface water extent, water area, DSWX, OPERA, Sentinel-1, S1, Radar |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution Spatial Resolution: 30 Meters x 30 Meters Temporal Resolution: Daily - < Weekly Coverage North Bounding Coordinate: 84 degrees South Bounding Coordinate: -84 degrees West Bounding Coordinate: -180 degrees East Bounding Coordinate: 180 degrees Time Span: 2023-Dec-01 to Present Projection Projection Type: Universal Transverse Mercator (UTM) Projection Detail: Geolocation information included for each pixel Ellipsoid: WGS 84 |
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| DIRECT S3-ACCESS | |
| Available for access in-region with AWS Cloud | |
Region | |
| us-west-2 | |
| podaac-ops-cumulus-protected/OPERA_L3_DSWX-S1_V1 | |
| podaac-ops-cumulus-public/OPERA_L3_DSWX-S1_V1 | |
AWS S3 Credentials | |
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| DATA CITATION GUIDELINES | |
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| GENERAL DOCUMENTATION | |
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| ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD) | |
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| SCIENCE DATA PRODUCT VALIDATION | |
Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.
| Citation | OPERA . 2024. OPERA Dynamic Surface Water Extent from Sentinel-1 product (Version 1). Ver. 1.0. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/OPDSWS1-L3V1
For more information see Data Citations and Acknowledgments.
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