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In order to generate these data, we first project the data into a Lambert Azimuthal Equal Area projection
Linear Unit: Meter (1.000000)
Geographic Coordinate System: GCS_WGS_1984
Angular Unit: Degree (0.017453292519943299)
Prime Meridian: Greenwich (0.000000000000000000)
Semimajor Axis: 6378137.000000000000000000
Semiminor Axis: 6356752.314245179300000000
Inverse Flattening: 298.257223563000030000
If a MODIS pixel was detected by Terra-i it is counted as fully changed which can lead to an over estimation of the real rate. Moreover, Terra-i spatial resolution (~250m) does not allow to observe small scale events. The rates in hectare presented in the tables and reports should therefore be used as an indicator of the rate trend but should not be considerate as the exact trend present in the analyzed area.
DATASET: The data distributed here is in CSV format for different administrative level. These data are derived from the Terra-i output at 250m spatial resolution, in decimal degrees and datum WGS84. It is derived from the USGS/NASA MODIS data. CIAT processed this data to provide habitat change maps. The detections were made using algorithms described by Reymondin et al. (2012).
DISTRIBUTION: : Users are prohibited from any commercial, non-free resale, or redistribution without explicit written permission from CIAT. Users should acknowledge CIAT as the source used in the creation of any reports, publications, new data sets, derived products, or services resulting from the use of this data set. CIAT also request reprints of any publications and notification of any redistributing efforts. For commercial access to the data, send requests to Louis Reymondin (email@example.com).
Additional data sources:
● Countries limit: Global Administrative Unit Layers (GAUL) by FAO.
● Protected areas: World Database of Protected Areas Annual Release 2009.
● Indigenous areas: World Database of Protected Areas Annual Release 2009 - Query Indigenous Lands.
● Ecosystems: Global Terrestrial Ecoregions by WWF Release 2003.
NO WARRANTY OR LIABILITY: CIAT provides this data without any warranty of any kind whatsoever, either express or implied, including warranties of merchantability and fitness for a particular purpose. CIAT shall not be liable for incidental, consequential, or special damages arising out of the use of any data.
ACKNOWLEDGEMENT AND CITATION: We kindly ask any users to cite this data in any published material produced using this data, and if possible link web pages to the CIAT-Terra-i website (www.terra-i.org).
REFERENCE: Louis Reymondin, Andrew Jarvis, Andres Perez-Uribe, Jerry Touval, Karolina Argote, Julien Rebetez, Edward Guevara, Mark Mulligan (2012), A methodology for near real-time monitoring of habitat change at continental scales using MODIS-NDVI and TRMM. Submitted Remote Sensing of Environment.