Arctic SDI catalogue
Imperviousness Change 2018-2021 (raster 20 m), Europe, 3-yearly, Jun 2025
The Imperviousness Change (IMDC) 2018-2021 layer is part of the High Resolution Layer (HRL) Imperviousness. It contains the imperviousness change per pixel (increase or decrease in percentage) as derived from the difference between the Imperviousness Density (IMD) status layers for reference years 2018 and 2021, in an aggregated version of 20m spatial resolution. The production of the HRL Imperviousness is coordinated by EEA in the frame of Copernicus, the Earth observation component of the European Union’s Space programme.
The product is a raster dataset with 20-meter grid spacing (spatial resolution) that covers the 38 Eionet member and cooperating countries as well as the United Kingdom (i.e. EEA38+UK). It is distributed as 100 x 100 km tiles that are fully conformant with the EEA reference grid.
Simple
- Date ( Creation )
- 2025-05-01
- Date ( Publication )
- 2025-06-18
- Edition
- 01.00
- Identifier
- copernicus_r_3035_20_m_imdc-2018-2021_p_2018-2021_v01_r00
- Identifier
- DAT-14-en
- Unique resource identifier
- 10.2909/b862001d-6635-44c3-8448-d9e793188e8a
Point of contact
- Maintenance and update frequency
- Continual
- GEMET - INSPIRE themes, version 1.0 ( Theme )
- Keywords
-
- Continents, countries, sea regions of the world. ( Place )
-
- EEA38 (from 2020)
- United Kingdom
- Keywords
-
- GEMET ( Theme )
- Spatial scope ( Theme )
- EEA topics ( Theme )
- Access constraints
- Other restrictions
- Other constraints
- no limitations to public access
- 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.
- Spatial representation type
- Grid
- Distance
- 20 m
- Metadata language
- en
- Character set
- UTF8
- Topic category
-
- Environment
- Imagery base maps earth cover
- Begin date
- 2018-01-01
- End date
- 2021-12-31
))
- Supplemental Information
-
Pixel codes:
0 to 99: 0-100% Imperviousness Density decrease
100: Unchanged impervious areas
101-200: 0-100% Imperviousness Density increase
201: Unchanged non-impervious areas
255: Outside area
- Unique resource identifier
- EPSG:3035
- Distribution format
-
-
GeoTIFF
(
1.0
)
-
GeoTIFF
(
1.0
)
- OnLine resource
-
HRL_NVLCC_IMDC_20m
(
OGC:WMS
)
CLMS_NVLCC_IMDC_C2018-2021_R20m
- OnLine resource
- WEkEO Portal ( WWW:URL )
- OnLine resource
- Product Information & Technical Documentation ( WWW:LINK-1.0-http--link )
OnLine resource
- OnLine resource
- https://doi.org/10.2909/b862001d-6635-44c3-8448-d9e793188e8a ( DOI )
- Hierarchy level
- Dataset
Conformance result
- Date ( Publication )
- 2010-12-08
- Explanation
- See the referenced specification
- Statement
-
The Imperviousness Change 2018-2021 layers (20m/100m) were derived by computing the difference between the Imperviousness Density status layers for the reference years 2021 and 2018 (IMD 2021 – IMD 2018) and applying a change mask, followed by an averaging operation to aggregate pixels to a coarser resolution (20m or 100m). The change mask, derived using the harmonic coefficients of NDVI data from 2018 and 2021, was used in the process as it served as a proxy for land-cover change.
Changes to previous release (2018):
- Introduction of a new production system and algorithm (U-Net CNN).
- Reduction of in-situ data dependency for dataset production.
- First Impervious Built-up Change (IBUC) layer (2018-2021).
- File identifier
- b862001d-6635-44c3-8448-d9e793188e8a XML
- Metadata language
- en
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2025-09-22T13:11:21.385054Z
- Metadata standard name
- ISO 19115/19139
- Metadata standard version
- 1.0
Overviews
Spatial extent
Provided by
