# Data attribution

This data is Corine Land Cover (CLC) 2018, produced by the European
Environment Agency (EEA) under the framework of the Copernicus Land
Monitoring Service.

  Source:       https://land.copernicus.eu/pan-european/corine-land-cover
  Product:      Corine Land Cover (CLC) 2018, Version 2020 20u1
  Producer:     European Environment Agency (EEA), Copernicus programme
  Access:       Full, open and free access under the Copernicus data and
                information policy, Regulation (EU) No 1159/2013
  Attribution:  (c) European Union, Copernicus Land Monitoring Service,
                European Environment Agency (EEA)

Downstream users of these files MUST:
  1. Credit the Copernicus Land Monitoring Service and the EEA in any
     product produced from this data.
  2. Keep this notice with the data when redistributing it.

# Nomenclature and legend

Land cover classes are the standard CLC three-digit codes in the
`Code_18` column (111 continuous urban fabric ... 523 sea and ocean, 999
NODATA). The official 47-colour legend is built into GeoPQ Workbench:
styling by `Code_18` applies it, with the class names, automatically.

# Countries

The `country` column (ISO 3166-1 alpha-2) is not part of CLC. It was
added by Geomermaids: each polygon goes whole to the country it overlaps
most, or to the nearest one when it overlaps none (tidal flats, sea). No
polygon is cut, so a polygon across a border sits in one country's file
only. The borders are GAUL 2024, following the UN delineation: Kosovo's
polygons are in Serbia (RS), and Northern Cyprus is in Cyprus (CY).

  FAO. 2024. Global Administrative Unit Layers (GAUL).
  [Accessed on 23 September 2026]. https://data.apps.fao.org/?lang=en.
  Licence: CC-BY-4.0

FAO has not participated in, sponsored, approved or endorsed this use of
GAUL. The designations employed and the presentation of material in GAUL
do not imply the expression of any opinion whatsoever on the part of FAO
concerning the legal status of any country, territory, city or area or of
its authorities, or concerning the delimitation of its frontiers or
boundaries.

# Source notes

Original distribution: GeoPackage, ETRS89 / LAEA Europe (EPSG:3035),
2,375,406 features. Converted to GeoParquet with a covering bbox column,
sorted by country then along a Hilbert curve, in row groups of
10,240 polygons, so a filter on country or on a bbox reads only
the groups it touches. Geometry, attributes and CRS are unchanged from the
source; `country` is the one column added.

This data is packaged and hosted by Geomermaids:
  https://geoparquet.geomermaids.com/
  contact: gsueur@geomermaids.com