TY - GEN T1 - ISLSCP II Continuous Fields of Vegetation Cover, 1992-1993 AU - DEFRIES, R.S. AU - HANSEN, M.C. DO - 10.3334/ORNLDAAC/931 UR - http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=931 AB - The objective of this study was to derive continuous fields of vegetation cover from multi-temporal Advanced Very High Resolution Radiometer (AVHRR) data using all available bands and derived Normalized Difference Vegetation Index (NDVI). The continuous fields describe sub-pixel proportions of cover for tree, herbaceous, bare ground and water cover types. For tree cover, additional fields describing leaf longevity (evergreen and deciduous) and leaf morphology (broadleaf and needleleaf) were also generated. The modeling of carbon dynamics and climate require knowing tree characteristics such as these. These products were resampled and aggregated to 0.25, 0.5 and 1.0 degree grids for the International Satellite Land Surface Climatology Project (ISLSCP) data initiative II. The data set describes the geographic distributions of three fundamental vegetation characteristics: tree, herbaceous and bare ground cover, plus a water layer. For tree cover, leaf longevity and morphology layers were produced. PY - 2009 PB - ORNL Distributed Active Archive Center LA - en ER -