We are in the process of migrating all NASA Earth science data sites into Earthdata from now until end of 2026. Not all NASA Earth science data and resources will appear here until then. Thank you for your patience as we make this transition.Read about the Web Unification Project
Description
This Global Ecosystem Dynamics Investigation (GEDI) L4B product provides 1 km x 1 km (1 km, hereafter) estimates of mean aboveground biomass density (AGBD) based on observations from mission week 19 starting on 2019-04-18 to mission week 223 ending on 2023-03-16. The GEDI L4A Footprint Biomass product converts each high-quality waveform to an AGBD prediction, and the L4B product uses the sample present within the borders of each 1 km cell to statistically infer mean AGBD. The gridding procedure is described in the GEDI L4B Algorithm Theoretical Basis Document (ATBD). Patterson et al. (2019) describes the hybrid model-based mode of inference used in the L4B product. Corresponding 1 km estimates of the standard error of the mean are also provided in the L4B product. Uncertainty is due to both GEDI's sampling of the 1 km area (as opposed to making wall-to-wall observations) and the fact that L4A biomass values are modeled in a process subject to error instead of measured in a process that may be assumed to be error-free.
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
Copy Citation
Citation Copied
Dubayah, R. O., Armston, J., Healey, S. P., Yang, Z., Patterson, P. L., Saarela, S., Stahl, G., Duncanson, L., Kellner, J. R., Bruening, J. M., & Pascual, A. (2023). GEDI L4B Gridded Aboveground Biomass Density, Version 2.1 (Version 2.1). ORNL Distributed Active Archive Center. https://doi.org/10.3334/ORNLDAAC/2299 Date Accessed: 2026-05-13
Dubayah, R.O., J. Armston, S.P. Healey, Z. Yang, P.L. Patterson, S. Saarela, G. Stahl, et al. “GEDI L4B Gridded Aboveground Biomass Density, Version 2.1.” ORNL Distributed Active Archive Center, January 1, 2023. doi:10.3334/ORNLDAAC/2299. Date Accessed: 2026-05-13
Dubayah, R. O., et al. GEDI L4B Gridded Aboveground Biomass Density, Version 2.1. 2.1, ORNL Distributed Active Archive Center, 1 Jan. 2023, doi:10.3334/ORNLDAAC/2299. Date Accessed: 2026-05-13
Worden, Matthew A., Bilir, T. Eren, Bloom, A. Anthony, Fang, Jianing, Klinek, Lily P., Konings, Alexandra G., Levine, Paul A., Milodowski, David T., Quetin, Gregory R., Smallman, T. Luke, BarOn, Yinon M., Braghiere, Renato K., David, Cedric H., Fischer, Nina A., Gentine, Pierre, Green, Tim J., Jones, Ayanna, Liu, Junjie, Longo, Marcos, Ma, Shuang, Magney, Troy S., Massoud, Elias C., Myrgiotis, Vasileios, Norton, Alexander J., Parazoo, Nick, Tajfar, Elahe, Trugman, Anna T., Williams, Mathew, Worden, Sarah, Zhao, Wenli, Zhu, Songyan