Pantropical Forest Height and Biomass from GEDI and TanDEM-X Data Fusion

Description

This dataset includes maps of canopy height and aboveground biomass at spatial resolutions of 25 m and 100 m for Mexico, Gabon, French Guiana, and the Amazon Basin. The GEDI-TanDEM-X (GTDX) fusion maps were created by combining data from NASA's Global Ecosystem Dynamics Investigation (GEDI) Version 2 footprint data (from 2019-04-18 to 2021-08-18) and TanDEM-X (abbreviated as TDX) Interferometric Synthetic Aperture Radar (InSAR) images (from 2011-01-06 to 2020-12-31). The GTDX canopy height maps were generated by using the TDX coherence maps to invert the TDX height and subsequently using GEDI canopy height as reference data to calibrate the inverted height. The GTDX aboveground biomass maps were produced based on a generalized hierarchical model-based (GHMB) framework that utilizes GEDI biomass as training data to establish models for estimating biomass based on the GTDX canopy height. The dataset also includes maps of canopy height uncertainty, biomass uncertainty, and ancillary data including a regional modeling parameter and forest disturbance. The uncertainty of GTDX canopy height was estimated for each pixel by propagating the GEDI-TDX model error to each GTDX pixel prediction. The uncertainty of GTDX aboveground biomass was estimated by considering the error in both the GEDI footprint biomass data and the GEDI-TDX model, and then applying it to each GTDX biomass pixel prediction. The regional model parameter indicates the size of the analysis window (2 to 50 km or country wide) used for each pixel. The forest disturbance information identifies pixels where disturbance occurred between 2011 and 2020, and provides the year of last disturbance.

Resources

Name Format Description Link
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/2298
21 GEDI Project Site https://gedi.umd.edu
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F2298
33 Pantropical Forest Height and Biomass from GEDI and TanDEM-X Data Fusion: ForestHt_Biomass_GEDI_TDX.pdf https://data.ornldaac.earthdata.nasa.gov/public/global_vegetation/ForestHt_Biomass_GEDI_TDX/comp/ForestHt_Biomass_GEDI_TDX.pdf
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/daacdata/gedi/ForestHt_Biomass_GEDI_TDX/
33 Pantropical Forest Height and Biomass from GEDI and TanDEM-X Data Fusion: ForestHt_Biomass_GEDI_TDX.pdf https://data.ornldaac.earthdata.nasa.gov/public/gedi/ForestHt_Biomass_GEDI_TDX/comp/ForestHt_Biomass_GEDI_TDX.pdf
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/GEDI/guides/ForestHt_Biomass_GEDI_TDX.html
22 Forest canopy height from GEDI-TDX data fusion over Gabon, Mexico, French Guiana and the Amazon Basin. Source: height_mexico_25m.tif, height_gabon_25m.tif, height_frenchguiana_25m.tif, height_amazon_25m.tif https://daac.ornl.gov/GEDI/guides/ForestHt_Biomass_GEDI_TDX_Fig1.jpg
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/daacdata/global_vegetation/ForestHt_Biomass_GEDI_TDX/data/
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/VEGETATION/guides/ForestHt_Biomass_GEDI_TDX.html
22 Forest canopy height from GEDI-TDX data fusion over Gabon, Mexico, French Guiana and the Amazon Basin. Source: height_mexico_25m.tif, height_gabon_25m.tif, height_frenchguiana_25m.tif, height_amazon_25m.tif https://daac.ornl.gov/VEGETATION/guides/ForestHt_Biomass_GEDI_TDX_Fig1.jpg

Tags

  • ecosystems
  • land-use-land-cover
  • land-surface
  • biosphere
  • vegetation
  • earth-science

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