Prior to downloading a Data Map, please be sure to review the Metadata.  By downloading the Data Map, you automatically agree to the conditions stated in each Metadata file.  We strongly encourage you to read the source journal paper for each Data Map because our methodology has dramatically changed and improved from 2009 to present.  In this sense, the maps are not comparable between projects.

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Map of mean aboveground carbon density (ACD) at a resolution of one hectare for 659,592 hectares of tropical forest in northern Madagascar. Mapping units are metric tons (megagrams or Mg) of carbon per hectare.  A map data value of -9999 indicates missing data.  The method applied combined airborne LiDAR, field plot inventory, and satellite data in a regional stratification approach reported by Asner et al. (2012; below).  This map represents all woody vegetation with diameter at breast height (DBH) estimated in nested classes during field calibration.  The map represents the vegetation as imaged in 2010.

The data are provided as a GeoTIFF format (, and the data and the reference PDF(s) are compressed as a single, self-extracting 7Zip ( file.  When prompted, the password is "caodata" (without quotes).

Use, reporting, presentation or publication of results based on this map requires the following citation:

Asner, G.P., J.K. Clark, J. Mascaro, R. Vaudry, K.D. Chadwick, G. Vieilledent, M. Rasamoelina, A. Balaji, T. Kennedy-Bowdoin, L. Maatoug, M.S. Colgan, and D.E. Knapp. 2012. Human and environmental controls over aboveground carbon storage in Madagascar. Carbon Balance and Management 7(2) doi:10.1186/1750-0680-7-2

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