DSWx Product Suite
The Dynamic Surface Water eXtent (DSWx) products map pixel-wise surface water detections using optical or SAR imagery. The DSWx suite is composed of complementary products, which are named according to their input datasets. Specifically, a separate DSWx product is generated from Sentinel-1, NISAR, and the Harmonized Landsat Sentinel-2 (HLS) data. The products are designed to share the same structure, GeoTiff file format, file-naming convention, and have posting of 30 m. These DSWx products are provided as an analysis ready dataset but are not harmonized across the different sensors. All products will be accessible through NASA’s Physical Oceanography Distributed Active Archive Center (PO.DAAC).
Below we provide per DSWx product the product specification document as well as the corresponding product samples conforming to the detailed specifications. Interactive guides are provided demonstrating how products can be loaded and manipulated in an open-source GIS package. Interactive white papers provided through a Jupyter notebook environment outline product introductions and showcase select applications.
DSWx from Harmonized Landsat Sentinel-2 (DSWx-HLS)
DSWx-HLS Product Specification Document
This document describes the specifications of the OPERA Level-3 Dynamic Surface Water Extent (DSWx) product that uses Harmonized Landsat-8 Sentinel-2A/B/C (HLS) as the primary image-based inputs. Accordingly, this data product is referred to by the short name DSWx-HLS.
Access to Validated Products
Validated products are available through:
With the following accuracy (details are captured in DSWx-HLS calval database, contact podaac@podaac.jpl.nasa.gov to access
DSWx from Sentinel-1 (DSWx-S1)
DSWx-S1 Product Specification Document
This document describes the specifications of the OPERA Level-3 Dynamic Surface Water Extent (DSWx) product that uses Sentinel-1 A/B (S1) as the primary image-based inputs. Accordingly, this data product is referred to by the short name DSWx-S1.
Access to Validated Products
Validated products are available through:
With the following accuracy (details are captured in DSWx-S1 calval database, contact podaac@podaac.jpl.nasa.gov to access)
DSWx from NISAR (DSWx-NI) - Under Development
Interactive Guides
Visualization Guide
Refer to the following visualization guide, which illustrates how users can manipulate products in the open-source QGIS software.
Jupyter Notebook Tutorials
Guides below are written in Jupyter notebook environment outline and are intended to outline product introductions and showcase select applications.
- Data Discovery
Demonstrations on how to query data using CMR STAC or using direct file links (HTTPS or AWS S3).
Stream and Visualize from the Cloud
Stream and Visualize from a PO.DAAC link
- Flood Mapping Application
How to generate floods maps using OPERA DSWx-HLS without downloading the data locally.
Flood Extent Application
- Reservoir Monitoring Application
How to use OPERA DSWx-HLS to monitor water extent changes, i.e. Lake Mead, Nevada, USA
Reservoir Monitoring Application
To contact us or give feedback: opera.sep@jpl.nasa.gov
CL#21-6388, CL#26-0250