GEDI L4A Aboveground Biomass Density

The GEDI L4A Footprint Level Aboveground Biomass Density, Version 2.1 dataset provides comprehensive measurements of aboveground biomass density (AGBD) and prediction standard error for individual laser footprints. These predictions are generated from the Global Ecosystem Dynamics Investigation (GEDI) instrument, which is mounted on the International Space Station (ISS).

The GEDI instrument utilizes three lasers to produce eight beam ground transects, sampling ~25 meter footprints approximately every 60 meters along-track. AGBD is derived from parametric models that correlate simulated GEDI Level 2A (L2A) waveform relative height (RH) metrics with field plot estimates of AGBD across various world regions and plant functional types. The dataset covers the nominal latitude band of 51.6 degrees N and S and includes data from 2019-04-18 to 2024-11-27, with a pause in acquisitions between March 2023 and April 2024.

This resource is invaluable for earth observation, ecosystem monitoring, and land cover analysis, particularly for understanding global biomass distribution and carbon cycling. The data is organized in sub-orbit granules and utilizes specific algorithm settings, including modifications for Evergreen Broadleaf Trees in South America to enhance accuracy.