The GEDI (Global Ecosystem Dynamics Initiative) has completed processing and distributed its initial data as Version 2 (V2) products to the appropriate Distributed Active Archives Centers (DAACs). Readers can find more information about the DAACs and other aspects of Earth Science data collection and processing in the article “Earth Science Data Operations: Acquiring, Distributing, and Delivering NASA Data for the Benefit of Society” in The Earth Observer, Volume 29, Issue 2, pages 4-18. A table listing the DAACs and their URL links can be found on pages 7-8 of this issue.
The Land Processes DAAC (LP DAAC) and Oak Ridge National Laboratory (ORNL) DAAC are the two primary DAACs responsible for processing GEDI data. The LP DAAC houses GEDI Level-1 (L1) data, including geolocated waveforms, and L2 data, which is further divided into L2A and L2B. L2A data provides information on ground elevation, canopy height, and relative height metrics. Detailed descriptions of waveform measurements can be found in a sidebar in the Summary of the Second GEDI Science Team Meeting in The Earth Observer, Volume 28, Issue 6, pages 31-36. L2B data includes canopy cover fraction (CCF) and leaf area index (LAI).
On the other hand, ORNL DAAC contains GEDI L3 gridded land surface metrics data, L4A footprint level aboveground biomass density data, and L4B gridded aboveground biomass density data. Figure 2 illustrates some of the data housed at the ORNL DAAC.
