huffingtonpost...WHRC's National Biomass and Carbon Dataset (NBCD) project, released in 2011, measured the density of organic carbon in vegetation across the United States.
The project, which used computer models, space-based radar, satellite sensors and ground-based data, was completed in six years in collaboration with the U.S. Forest Service and U.S. Geological Survey. According to NASA Earth Observatory, "It is possibly the highest resolution and most detailed view of forest structure and carbon storage ever assembled for any country."
According to Gizmodo, the map has a 30 meter resolution. Thus every four pixels represent one acre (10 pixels to a hectare). WHRC's Josef Kellndorfer claims that the entire biomass mapping project measured "about five million trees," reported NASA Earth Observatory.
