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Carbon Stocks of Individual Trees in African Drylands: Allometry and Output Data

Metadata Updated: December 7, 2023

This dataset provides allometrically-estimated carbon stocks of 9,947,310,221 tree crowns derived from 50-cm resolution satellite images within the 0 to 1000 mm/year precipitation zone of Africa north of the equator and south of the Sahara Desert. These data are presented in GeoPackage (.gpkg) format and are summarized in Cloud-Optimized GeoTIFF (COG) format. An interactive viewer application developed to display these carbon estimates at the individual tree level across the study area is available at: https://trees.pgc.umn.edu/app. The analysis utilized 326,523 Maxar multispectral satellite images collected between 2002 to 2021 for the early dry season months of November to March to identify tree crowns. Metadata from satellite image processing across the study area are presented in Shapefile (.shp) format. Additionally, field measurements from destructive harvests used to derive allometry equations are contained in comma-separated values (*.csv) files. These data demonstrate a new tool for studying discrete semi-arid carbon stocks at the tree level with immediate applications provided by the viewer application. Uncertainty of carbon estimates are +/- 19.8%.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date October 25, 2023
Metadata Updated Date December 7, 2023

Metadata Source

Harvested from NASA Data.json

Graphic Preview

Wood, foliage and root carbon of 9,947,310,221 trees (> 3 m^2 in crown area) across 9,685,324 km^2 were mapped. a, The study area covered the southern Sahara, the Sahel, and the northern Sudanian zone of Africa and shows the aggregated tree carbon density and carbon (foliage + wood + root) per hectare. The isohyets mark the 150, 300, 600, and 1000 mm/year rainfall zones (from north to south). b, An example of the carbon stock of each tree for an agroforestry area in Senegal. Figure from Tucker et al. (2023).

Additional Metadata

Resource Type Dataset
Metadata Created Date October 25, 2023
Metadata Updated Date December 7, 2023
Publisher ORNL_DAAC
Maintainer
Identifier C2787710838-ORNL_CLOUD
Data First Published 2023-10-19
Language en-US
Data Last Modified 2023-10-23
Category Vegetation, NASA ACCESS, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Citation Tucker, C.J., M. Brandt, P. Hiernaux, A. Kariryaa, J.L. Small, and J. Meyers. 2022. Carbon Stocks of Individual Trees in African Drylands: Allometry and Output Data. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2117
Graphic Preview Description Wood, foliage and root carbon of 9,947,310,221 trees (> 3 m^2 in crown area) across 9,685,324 km^2 were mapped. a, The study area covered the southern Sahara, the Sahel, and the northern Sudanian zone of Africa and shows the aggregated tree carbon density and carbon (foliage + wood + root) per hectare. The isohyets mark the 150, 300, 600, and 1000 mm/year rainfall zones (from north to south). b, An example of the carbon stock of each tree for an agroforestry area in Senegal. Figure from Tucker et al. (2023).
Graphic Preview File https://daac.ornl.gov/VEGETATION/guides/Semi-Arid_Tree_Carbon_50cm_Fig1.jpg
Harvest Object Id 7dbe5c1e-50ee-4fa9-adc4-bd349789a174
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://doi.org/10.3334/ORNLDAAC/2117
Metadata Type geospatial
Old Spatial -18.2 9.4 42.31 24.2
Program Code 026:001
Source Datajson Identifier True
Source Hash 819b496682c7dbf9b3da44149c335c81e7fbab4ca6fa40db6c00dd4359278ae6
Source Schema Version 1.1
Spatial
Temporal 2002-11-01T00:00:00Z/2021-03-31T23:59:59Z

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