Glob Cover
Introduction
GlobCover is an ESA initiative which began in 2005 in partnership with JRC, EEA, FAO, UNEP, GOFC-GOLD and IGBP. The aim of the project was to develop a service capable of delivering global composites and land cover maps using as input observations from the 300m MERIS sensor on board the ENVISAT satellite mission. ESA makes available the land cover maps, which cover 2 periods: December 2004 - June 2006 and January - December 2009. See more at: http://due.esrin.esa.int/globcover/
There is a validation report available at: http://due.esrin.esa.int/globcover/LandCover2009/GLOBCOVER2009_Validation_Report_2.2.pdf
Coverage
This dataset has a global coverage (except for the arctics). It is based on a 300 m x 300 m grid.
Legends
The Globcover dataset has 23 different categories that EMD has mapped in to a suggest roughness length, z0.
| ID | Land Cover Type | EMD Roughness Class |
|---|---|---|
| 11 | Post-flooding or irrigated croplands (or aquatic) | z0=0.100 |
| 14 | Rainfed croplands | z0=0.100 |
| 20 | Mosaic cropland (50-70%) / vegetation (grassland/shrubland/forest) (20-50%) | z0=0.07 |
| 30 | Mosaic vegetation (grassland/shrubland/forest) (50-70%) / cropland (20-50%) | z0=0.07 |
| 40 | Closed to open (>15%) broadleaved evergreen or semi-deciduous forest (>5m) | z0=0.5 |
| 50 | Closed (>40%) broadleaved deciduous forest (>5m) | z0=0.4 |
| 60 | Open (15-40%) broadleaved deciduous forest/woodland (>5m) | z0=0.4 |
| 70 | Closed (>40%) needleleaved evergreen forest (>5m) | z0=0.5 |
| 90 | Open (15-40%) needleleaved deciduous or evergreen forest (>5m) | z0=0.4 |
| 100 | Closed to open (>15%) mixed broadleaved and needleleaved forest (>5m) | z0=0.4 |
| 110 | Mosaic forest or shrubland (50-70%) / grassland (20-50%) | z0=0.07 |
| 120 | Mosaic grassland (50-70%) / forest or shrubland (20-50%) | z0=0.07 |
| 130 | Closed to open (>15%) (broadleaved or needleleaved, evergreen or deciduous) shrubland (<5m) | z0=0.07 |
| 140 | Closed to open (>15%) herbaceous vegetation (grassland, savannas or lichens/mosses) | z0=0.05 |
| 150 | Sparse (<15%) vegetation | z0=0.07 |
| 160 | Closed to open (>15%) broadleaved forest regularly flooded (semi-permanently or temporarily) - Fresh or brackish water | z0=0.1 |
| 170 | Closed (>40%) broadleaved forest or shrubland permanently flooded - Saline or brackish water | z0=0.1 |
| 180 | Closed to open (>15%) grassland or woody vegetation on regularly flooded or waterlogged soil - Fresh, brackish or saline water | z0=0.03 |
| 190 | Artificial surfaces and associated areas (Urban areas >50%) | z0=0.4 |
| 200 | Bare areas | z0=0.02 |
| 210 | Water bodies | z0=0.0002 |
| 220 | Permanent snow and ice | z0=0.001 |
| 230 | No data (burnt areas, clouds,…) | z0=N/A |
License and Acknowledgement
When using the dataset please use the following acknowledgement:
Global land cover data: © ESA 2010 and UCLouvain http://due.esrin.esa.int/