GEDI L4B Gridded Aboveground Biomass Density, Version 2.1
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.
Resources
9 resources available
-
Original Metadata
ISO -
Resource 2
PNG -
Resource 3
ZIP -
Resource 4
PDF -
Resource 5
PDF -
Resource 6
JSON -
Resource 7
HTML -
Resource 8
BIN -
Resource 9
BIN
Find Related Datasets
Search by Tags
Click any tag below to search for similar datasets
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"026:00"
]
|
| contactPoint |
{
"fn": "Earthdata Forum",
"@type": "vcard:Contact",
"hasEmail": "mailto:earthdata-support@nasa.gov"
}
|
| 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. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Original Metadata",
"format": "ISO",
"mediaType": "text/xml",
"conformsTo": "http://www.isotc211.org/2005/gmi",
"description": "The metadata's original source.",
"downloadURL": "https://cmr.earthdata.nasa.gov/search/concepts/C2792577683-ORNL_CLOUD.iso19115"
},
{
"@type": "dcat:Distribution",
"format": "PNG",
"mediaType": "image/png",
"downloadURL": "https://daac.ornl.gov/GEDI/guides/GEDI_L4B_Gridded_Biomass_V2_1_Fig1.png"
},
{
"@type": "dcat:Distribution",
"format": "ZIP",
"mediaType": "application/zip",
"downloadURL": "https://data.ornldaac.earthdata.nasa.gov/protected/bundle/GEDI_L4B_Gridded_Biomass_V2_1_2299.zip"
},
{
"@type": "dcat:Distribution",
"format": "PDF",
"mediaType": "application/pdf",
"downloadURL": "https://data.ornldaac.earthdata.nasa.gov/public/gedi/GEDI_L4B_Gridded_Biomass_V2_1/comp/GEDI_L4B_ATBD_V2.0.pdf"
},
{
"@type": "dcat:Distribution",
"format": "PDF",
"mediaType": "application/pdf",
"downloadURL": "https://data.ornldaac.earthdata.nasa.gov/public/gedi/GEDI_L4B_Gridded_Biomass_V2_1/comp/GEDI_L4B_Gridded_Biomass_V2_1.pdf"
},
{
"@type": "dcat:Distribution",
"format": "JSON",
"mediaType": "application/json",
"downloadURL": "https://data.ornldaac.earthdata.nasa.gov/public/gedi/GEDI_L4B_Gridded_Biomass_V2_1/comp/gedi_l4b_excluded_granules_v21.json"
},
{
"@type": "dcat:Distribution",
"format": "HTML",
"mediaType": "text/html",
"downloadURL": "https://doi.org/10.3334/ORNLDAAC/2299"
},
{
"@type": "dcat:Distribution",
"format": "BIN",
"mediaType": "application/octet-stream",
"downloadURL": "https://gedi.umd.edu"
},
{
"@type": "dcat:Distribution",
"format": "BIN",
"mediaType": "application/octet-stream",
"downloadURL": "https://search.earthdata.nasa.gov/search?q=GEDI_L4B_Gridded_Biomass_V2_1_2299&ac=true"
}
]
|
| identifier | 10.3334/ORNLDAAC/2299 |
| keyword |
[
"earth-science-ecosystems-biosphere-terrestrial-ecosystems",
"earth-science-lidar-spectral-engineering-lidar-waveform",
"earth-science-vegetation-biosphere-biomass"
]
|
| license | https://www.usa.gov/government-works |
| modified | 2026-05-18 |
| programCode |
[
"026:000"
]
|
| publisher |
{
"name": "ORNL_DAAC",
"@type": "org:Organization"
}
|
| spatial |
"[[{"WestBoundingCoordinate":-180.0,"NorthBoundingCoordinate":52.0,"EastBoundingCoordinate":180.0,"SouthBoundingCoordinate":-52.0}],"CARTESIAN"]"
|
| temporal | 2019-04-18/2023-03-16 |
| theme |
[
"Earth Science"
]
|
| title | GEDI L4B Gridded Aboveground Biomass Density, Version 2.1 |
