GFCC30FCC v001

Global Forest Cover Change (GFCC) Forest Cover Change Multi-Year Global 30 m


PI: J. Townshend

Description

The Land Processes Distributed Active Archive Center (LP DAAC) archives and distributes Global Forest Cover Change (GFCC) data products through the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program. The GFCC Forest Cover Change Multi-Year Global dataset provides estimates of changes in forest cover from 1990 to 2000 and from 2000 to 2005 at 30 meter spatial resolution. The GFCC30FCC product represents a global record of fine-scale changes in forest dynamics between observation periods. The forest cover change product was generated from the GFCC Tree Cover (GFCC30TC) product which is based on Global Land Survey (GLS) data acquired by the Landsat 5 Thematic Mapper (TM) and Landsat 7 Enhanced Thematic Mapper Plus (ETM+) sensors.

Each forest cover product has two GeoTIFF files associated with it; a change map file and a change probability file. Data follow the Worldwide Reference System-2 tiling scheme. Additional details regarding the methodology used to create the data are available in the Algorithm Theoretical Basis Document (ATBD).

Characteristics

Collection and Granule

Collection

Characteristic Description
CollectionMEaSUREs GFCC
DOI10.5067/MEaSUREs/GFCC/GFCC30FCC.001
File Size~10 MB
Temporal ResolutionMulti-Year
Temporal Extent1990-01-01 to 2004-12-31
Spatial ExtentGlobal
Coordinate SystemUniversal Transverse Mercator (UTM)
DatumWorld Geodetic System (WGS84)
File FormatGeoTIFF
Geographic Dimensions170 km x 183 km

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers2
Columns/RowsVaries by scene
Pixel Size30 m

Layers

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor
CM Forest Cover Change Map N/A 8-bit signed integer 0 N/A 1 to 99 N/A
CP Forest Cover Change Probability Percent 32-bit floating point 255 N/A 0 to 100 N/A

Forest Cover and Change Map Values

Value Description
0 No Data
2 Shadow
3 Cloud
4 Water
11 Persistent Forest
19 Forest Loss
91 Forest Gain
99 Persistent Non-forest

Product Quality

Additional information on Quality Assessment is provided in the User Guide under Section 5.2 on page 27.

Documentation

Using the Data

Tools

Citation

DOI: 10.5067/MEaSUREs/GFCC/GFCC30FCC.001

About the Image

Forest cover change map of part of Brazil, 2000 - 2005.