GEDI L4B Gridded Aboveground Biomass Density, Version 2

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 138 ending on 2021-08-04. 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.

Resources

Name Format Description Link
5 https://doi.org%2F10.3334%2FORNLDAAC%2F2017
5 https://daac.ornl.gov%2Fgraphics%2Fbrowse%2Fproject%2Fsquare%2Fgedi_logo_square.png
5 https://gedi.umd.edu%2F
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fgedi%2FGEDI_L4B_Gridded_Biomass%2Fcomp%2FGEDI_L4B_Gridded_Biomass.pdf
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fgedi%2FGEDI_L4B_Gridded_Biomass%2Fcomp%2FGEDI_L4B_ATBD_v1.0.pdf
5 https://daac.ornl.gov%2FABOVE%2Fguides%2FGEDI%2Fguides%2FGEDI_L4B_Gridded_Biomass.html
21 GEDI_L4B_Gridded_Biomass.html https://daac.ornl.gov/ABOVE/guides/GEDI/guides/GEDI_L4B_Gridded_Biomass.html
21 https://doi.org/10.3334/ORNLDAAC/2017
34 gedi_logo_square.png https://daac.ornl.gov/graphics/browse/project/square/gedi_logo_square.png
5 https://gedi.umd.edu/
33 GEDI_L4B_Gridded_Biomass.pdf https://data.ornldaac.earthdata.nasa.gov/public/gedi/GEDI_L4B_Gridded_Biomass/comp/GEDI_L4B_Gridded_Biomass.pdf
33 GEDI_L4B_ATBD_v1.0.pdf https://data.ornldaac.earthdata.nasa.gov/public/gedi/GEDI_L4B_Gridded_Biomass/comp/GEDI_L4B_ATBD_v1.0.pdf
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C3495301474-ORNL_CLOUD.iso19115
5 https://gedi.umd.edu

Tags

  • earth-science-lidar-spectral-engineering-lidar-waveform
  • earth-science-ecosystems-biosphere-terrestrial-ecosystems
  • earth-science-vegetation-biosphere-biomass

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