ESA WorldCover

Date modified: 31 July 2022

Product Overview

Contexte

The ESA WorldCover product is a freely accessible global land cover map at 10m resolution for the year 2020 and 2021, based on both Sentinel-1 and Sentinel-2 data. The discrete classification map provides 11 land cover/land use classes and is defined using the Land Cover Classification System (LCCS) developed by the United Nations (UN) Food and Agricultre Organization (FAO).

Digital Earth Africa provides free and open access to a copy of the ESA WorldCover 10m for 2020 and 2021 product over Africa. For more information on the ESA WorldCover product, see the ESA WorldCover website.

Product User Manual

Product User Manual for ESA WorldCover 2020

Product User Manual for ESA WorldCover 2021

A Jupyter Notebook which demonstrates loading and using landcover datasets in the Sandbox is also available.

Spécifications

Couverture spatiale et temporelle

Relevant metadata for the ESA WorldCover product can be viewed on the DE Africa Metadata Explorer.

Table 1: ESA WorldCover product specifications

Spécifications

Nom du produit

esa_worldcover

Cell size - X (degrees)

0.000083° (~10m)

Cell size - Y (degrees)

0.000083° (~10m)

Système de référence des coordonnées

EPSG:4326

Résolution temporelle

Annuel

Plage temporelle

2020 , 2021

Fréquence de mise à jour

Annuel

The specific temporal and geographic extents for the product can be explored as an interactive map on the Metadata Explorer. Data is available for the region shaded in blue.

Figure 1: ESA WorldCover product geographic extent

ESA WorldCover Geographic Extent

Mesures

Table 2: ESA WorldCover product measurements

ID de la bande

Description

Unités

Type de données

Pas de données\(^\dagger\)

classification

Land cover classification

1

uint8

0.0

Traitement

The ESA WorldCover global land cover product was generated using both Sentinel-2 multi-spectral imagery and Sentinel-1 C-band Synthetic Aperture Radar (SAR) imagery. The algorithm used to generate the product is based on the algorithm used to produce the dynamic annual Copernicus Global Land Service Land Cover map at 100m resolution (CGLS_LC100m). A summary of the algorithm is presented in the Product User Manual for 2020 and Product User Manual for 2021.

Médias et exemples d’images

Figure 2: ESA WorldCover 2020 land cover classification data for Madagascar

ESA Worldcover Madagascar 2020

Figure 3: ESA WorldCover 2021 land cover classification data for Madagascar

ESA Worldcover Madagascar 2021

© ESA WorldCover project 2021 / Contains modified Copernicus Sentinel data (2021) processed by ESA WorldCover consortium

Références

Zanaga, D., Van De Kerchove, R., De Keersmaecker, W., Souverijns, N., Brockmann, C., Quast, R., Wevers, J., Grosu, A., Paccini, A., Vergnaud, S., Cartus, O., Santoro, M., Fritz, S., Georgieva, I., Lesiv, M., Carter, S., Herold, M., Li, Linlin, Tsendbazar, N.E., Ramoino, F., Arino, O., 2021. ESA WorldCover 10 m 2020 v100. https://doi.org/10.5281/zenodo.5571936

Zanaga, D., Van De Kerchove, R.,Daems, D.,De Keersmaecker, W., Brockmann, C., Kirches, G., Wevers, J., Cartus, O., Santoro, M., Fritz, S., Lesiv, M., Herold, M., Tsendbazar, N.E., Xu, P., Ramoino, F., Arino, O. ESA WorldCover 10 m 2021 v200 https://zenodo.org/record/7254221

License and Acknowledgements

The ESA WorldCover product is provided free of charge, without restriction of use. For the full license information see the Creative Commons Attribution 4.0 International License.

Data Acess

Amazon Web Service

The ESA WorldCover 10m 2020 and 2021 products are avaliable in AWS S3.

Table 3: AWS data acess details.

Détails sur AWS S3

Seau ARD

arn:aws:s3:::esa-worldcover

Région

eu-central-1

The products are hosted on the esa-worldcover S3 bucket in the AWS eu-central-1 region.

The file paths follow the format: https://esa-worldcover.s3.eu-central-1.amazonaws.com/v100/{year}/map/

Services Web de l’OGC (OWS)

The ESA WorldCover 10m product esa_worldcover is available through the Digital Earth Africa’s OWS.

Table 4: OWS data access details.

Détails de l’OWS

Nom

DE Africa Services

URL des services cartographiques Web (WMS)

https://ows.digitalearth.africa/wms?version=1.3.0

URL du service de couverture Web (WCS)

https://ows.digitalearth.africa/wcs?version=2.1.0

Nom de la couche

esa_worldcover_{year}

Les détails de Digital Earth Africa OWS peuvent être trouvés sur https://ows.digitalearth.africa/.

Pour obtenir des instructions sur la manière de se connecter à OWS, consultez ce tutoriel.

Open Data Cube (ODC)

The ESA WorldCover product can be accessed through the Digital Earth Africa ODC API, which is available through the Digital Earth Africa Sandbox.

ODC product name: esa_worldcover_{year}

The esa_worldcover product has only one specific band of data which can be called by using the default name, classification, as listed in the table below. ODC Datacube.load commands without specified bands will load the classification band.

Table 5: ODC product esa_worldcover band names.

Nom du groupe

Noms alternatifs

Valeur de remplissage

classification

NaN

0.0

Informations techniques

The ESA WorldCover product was independently validated with accuracies shown below:

Nom du produit

Global

Africa

ESA WorldCover 2020

74.4% ±0.1%

73.6% ±0.2%

ESA WorldCover 2021

76.7% ±0.5

76.5% ±1.3

In terms of land cover types, tree cover and snow/ice, cropland, water body, and bare/sparse vegetation classes had high accuracies, while shrubs, herbaceous wetland, and moss/lichen classes were mapped with lower accuracies. The validation dataset used was the multi-purpose Global Land Cover Validation dataset developed for Copernicus Global Land Service- Land Cover 100 product which was updated for the reference year 2020 by revisiting random and targeted (for land cover change) subsets.

Overall, the WorldCover 2021 v200 product shows promising improvements in characterizing the World’s land cover at 10 m resolution making use of Sentinel 1 and Sentinel 2 data for the year 2021. Users of the map are encouraged to make use of the statistical accuracy analysis at the global and continental level to best apply the WorldCover product for their purposes.

A detailed explanation of the validation results of the ESA WorldCover 10m product is presented in the:

Product Validation Report 2022

Product Validation Report 2021