Global Forest Cover Change (GFCC) tree cover data from the GFCC30TC product over Brazil, 2010.View full-size image
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 Tree Cover Multi-Year Global dataset is available for four epochs centered on the years 2000, 2005, 2010, and 2015. The dataset is derived from the GFCC Surface Reflectance product (GFCC30SR), which is based on enhanced Global Land Survey (GLS) datasets. The GLS datasets are composed of high-resolution Landsat 5 Thematic Mapper (TM) and Landsat 7 Enhanced Thematic Mapper Plus (ETM+) images at 30 meter resolution. GFCC30TC provides tree canopy information and can be used to understand forest changes. Each tree cover product features four files associated with it; a tree cover layer with an embedded color map, a tree cover error (uncertainty) file, and an index (provenance) file, plus a list of path/rows that relate to the Surface Reflectance input files. Note that the index file and file list were not generated for the 2015 epoch. 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).
|File Size||~70 MB|
|Temporal Extent||1999-06-01 to 2015-12-31|
|Coordinate System||Universal Transverse Mercator (UTM)|
|Datum||World Geodetic System (WGS84)|
|Geographic Dimensions||170 km x 183 km|
|Number of Science Dataset (SDS) Layers||3|
|Columns/Rows||Varies by scene|
|Pixel Size||30 m|
|SDS Name||Description||Units||Data Type||Fill Value||No Data Value||Valid Range||Scale Factor|
|TC||Tree Cover||Percent||8-bit unsigned integer||200 to 220||N/A||0 to 100||N/A|
|TC.idx¹||Tree Cover Index||N/A||8-bit unsigned integer||0||N/A||1 to 255||N/A|
|TC.err||Tree Cover Error||Percent||32-bit floating point||-9999||N/A||0 to 4294966531||N/A|
¹TC.idx files are only available for 2000, 2005, and 2010; they were not generated for the 2015 epoch.
|0 to 100||Percent of pixel area covered by tree cover|
Additional information on Quality Assessment is provided in the User Guide under Section 18.104.22.168 on page 25.