Imaging · collection · 2024

OPERA Dynamic Surface Water Extent from Sentinel-1 (Version 1)

Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/opdsws1-l3v1

This dataset contains Level-3 Dynamic OPERA Surface Water Extent from Sentinel-1 (DSWx-S1) product version 1.

Description

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).

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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.

Topics

Stated by source: SENTINEL-1A · SENTINEL-1B · SENTINEL-1 C-SAR · Total Surface Water
From keywords: Astronomy & Astrophysics · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
Inferred from text: Hydrology 71% · Image 75% · Satellite remote sensing 65%

Provenance · 2 source records, 21 field assertions

Source	Key	Last seen	Raw
NASA Earthdata CMR	C2949811996-POCLOUD	8 d ago	JSON v1
NASA Data Portal	ed2cea26-ed6c-4138-be69-3d32d4ce4858	5 d ago	JSON v1

Field	Assertion	Extractor	Evidence
access_level	source · NASA CMR	connector:nasa_cmr@1.0.0
concepts[field].anzsrc:group:3707	enrichment · NASA CMR	taxonomy-embedding@1.0.0	title+keywords+description (71%)
concepts[field].local:field:astronomy	mapping · data nasa gov	connector:data_nasa_gov@1.0.0
concepts[field].local:field:earth-environmental	mapping · data nasa gov	connector:data_nasa_gov@1.0.0
concepts[field].local:field:ocean-atmospheric	mapping · data nasa gov	connector:data_nasa_gov@1.0.0
concepts[field].local:field:physics	mapping · data nasa gov	connector:data_nasa_gov@1.0.0
concepts[instrument].gcmd_instrument:sentinel-1-c-sar	source · NASA CMR	connector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/terrestrial-hydrosphere/surface-water/surface-water-processes-measurements/total-surface-water	source · NASA CMR	connector:nasa_cmr@1.0.0
concepts[modality].local:modality:image	enrichment · NASA CMR	keyword-concept-rules@1.0.0	title+description (75%)
concepts[modality].local:modality:remote-sensing	enrichment · NASA CMR	keyword-concept-rules@1.0.0	title+description (65%)
concepts[platform].gcmd_platform:sentinel-1a	source · NASA CMR	connector:nasa_cmr@1.0.0
concepts[platform].gcmd_platform:sentinel-1b	source · NASA CMR	connector:nasa_cmr@1.0.0
created_date	source · NASA CMR	connector:nasa_cmr@1.0.0
description	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/Abstract
license_text	source · data nasa gov	connector:data_nasa_gov@1.0.0
publication_date	source · NASA CMR	connector:nasa_cmr@1.0.0
spatial	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/SpatialExtent
temporal	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/TemporalExtents
title	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/EntryTitle
updated_date	source · data nasa gov	connector:data_nasa_gov@1.0.0
version_label	source · NASA CMR	connector:nasa_cmr@1.0.0

OPERA Dynamic Surface Water Extent from Sentinel-1 (Version 1)

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