Glob Cover

Introduction

GlobCover Roughness Data in WindPRO

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.

Table: GlobCover legend with Roughness Classification Data by EMD

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/

External Link

http://due.esrin.esa.int/globcover/