EEA geospatial data catalogue
Copernicus High Resolution Water Snow and Ice Monitoring: Water Layer Rolling Archive (WLRA) 2009-2021, 10m
The Rolling Archive database (WLRA) is one of the products of the pan-European High-Resolution Water Snow & Ice portfolio (HR-WSI), which are provided at high spatial resolution from the Sentinel-2 and Sentinel-1 constellations data from September 1, 2016 onwards.
The High Resolution Water Layer portfolio consists of the Water Layer (WL), the Water Presence Index (WPI), the Water confidence layer (WCL) and the Rolling archive (WLRA).
The WLRA consists of intermediate production layers such as water and wetness masks showing the seasonal water and dry occurrences starting 2009. The masks are used for the generation of the Water Layer which covers a period of seven years per reference year and is regularly updated every three years. It is therefore important that it is consistent over
the entire period. To guarantee reproducibility and future continuation of the baseline product, these masks are provided within a database consisting of all
seasonal masks starting from 2009.
With the new update of the Water product, the HR WL for the reference year 2021 only water masks will be continued. Additionally, the computation frequency changed from seasonal to monthly masks. This update covers a period from 2016.09.01 to 20211231 including an update of the masks already availbe from the historic 2018 production. The binary masks are provided across Europe in a spatial resolution of 10 m x 10 m as GeoTiffs zipped in a ZARR file.
Simple
Identification info
- Date (Publication)
- 2025-04-23
- Edition
-
01.00
- Citation identifier
- copernicus_r_3035_10_m_wlra_p_2009-now_v01_r00
- Citation identifier
- da67c24d-a8b3-4b43-a321-aedf9e5f0c83
Identifier
- Spatial representation type
- Grid
Spatial resolution
- Spatial resolution
- 10 m
- Topic category
-
- Environment
Extent
Temporal extent
- Time period
- 2009-01-01 2021-12-31
Extent
))
- Maintenance and update frequency
- Continual
- Continents, countries, sea regions of the world.
-
-
EEA38 (from 2020)
-
United Kingdom
-
- Temporal resolution
-
-
Monthly
-
Resource constraints
- Access constraints
- Other restrictions
- Other constraints
- no limitations to public access
Resource constraints
- Use constraints
- Other restrictions
- Other constraints
-
The Copernicus component is governed by Regulation (EU) No 2021/696 of the European Parliament and of the Council of 28 April 2021 establishing the Union Space Programme and the European Union Agency for the Space Programme and repealing Regulations (EU) No 912/2010, (EU) No 1285/2013 and (EU) No 377/2014 and Decision No 541/2014/EU. Within the Copernicus component, a portfolio of land monitoring activities has been delegated by the European Union to the European Environment Agency (EEA) and the DG Joint Research Centre of the European Commission.
The Copernicus land monitoring products and services are made available on a principle of full, open and free access, as established by the Commission Delegated Regulation (EU) No 1159/2013 of 12 July 2013.
Free, full and open access to the products and services of the Copernicus Land Monitoring Service is made on the conditions that:
1. When distributing or communicating Copernicus Land Monitoring Service products and services (data, software scripts, web services, user and methodological documentation and similar) to the public, users shall inform the public of the source of these products and services.
2. Where the Copernicus Land Monitoring Service products and services have been adapted or modified by the user, the user shall clearly state this.
3. Users shall make sure not to convey the impression to the public that the user's activities are officially endorsed by the European Union.
- Language
- English
- Character encoding
- UTF8
Data quality info
- Hierarchy level
- Dataset
Report
Result
- Date (Publication)
- 2010-12-08
- Explanation
-
See the referenced specification
Resource lineage
- Statement
-
Input data are the Water and Ice cover products (WIC S2) and Sentinel-1 and Sentinel-2 and Landsat of the 12 years time period.
- Hierarchy level
- Dataset
Reference System Information
Reference System Information
- Code
- EPSG:3035
- Maintenance and update frequency
Metadata
- Metadata identifier
- c4803f9f-f0ef-412c-8519-407f36986133
- Language
- English
- Character encoding
- UTF8
- Contact
-
Organisation Individual Electronic mail address Website Role European Environment Agency
Point of contact
Type of resource
- Resource type
- Dataset
- Date info (Creation)
- 2025-03-24T17:23:04.049613Z
- Date info (Revision)
- 2026-03-03T17:22:43.619785Z
Metadata standard
- Title
-
ISO 19115/19139
- Edition
-
1.0
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