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GEDI L2B Canopy Cover and Vertical Profile Metrics Data Global Footprint Level V002

Metadata Updated: March 28, 2024

The Global Ecosystem Dynamics Investigation (GEDI) ) mission aims to characterize ecosystem structure and dynamics to enable radically improved quantification and understanding of the Earth’s carbon cycle and biodiversity. The GEDI instrument produces high resolution laser ranging observations of the 3-dimensional structure of the Earth. GEDI is attached to the International Space Station (ISS) and collects data globally between 51.6° N and 51.6° S latitudes at the highest resolution and densest sampling of any light detection and ranging (lidar) instrument in orbit to date. Each GEDI Version 2 granule encompasses one-fourth of an ISS orbit and includes georeferenced metadata to allow for spatial querying and subsetting.

The purpose of the GEDI Level 2B Canopy Cover and Vertical Profile Metrics product (GEDI02_B) is to extract biophysical metrics from each GEDI waveform. These metrics are based on the directional gap probability profile derived from the L1B waveform. Metrics provided include canopy cover, Plant Area Index (PAI), Plant Area Volume Density (PAVD), and Foliage Height Diversity (FHD). The GEDI02_B product is provided in HDF5 format and has a spatial resolution (average footprint) of 25 meters.

The GEDI02_B data product contains 96 layers for each of the eight-beam ground transects (or laser footprints located on the land surface). Datasets provided include precise latitude, longitude, elevation, height, canopy cover, and vertical profile metrics. Additional information for the layers can be found in the GEDI Level 2B Data Dictionary.

Improvements for Version 2 * Metadata has been updated to include spatial coordinates. * Granule size has been reduced from one full ISS orbit (~1.2 GB) to four segments per orbit (~0.3 GB). * Filename has been updated to include segment number and version number. * Improved Geolocation. * Added elevation from the SRTM digital elevation model for comparison. * Modified the method to predict an optimum algorithm setting group per laser shot. * Added additional land cover datasets related to phenology, urban infrastructure, and water persistence. * Added selected_mode_flag dataset to root beam group using selected algorithm. * Removed shots when the laser is not firing. * Modified file name.

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 March 28, 2024
Metadata Updated Date March 28, 2024

Metadata Source

Harvested from NASA Data.json

Graphic Preview

Browse image for Earthdata Search

Additional Metadata

Resource Type Dataset
Metadata Created Date March 28, 2024
Metadata Updated Date March 28, 2024
Publisher LP DAAC
Maintainer
Identifier C2142776747-LPCLOUD
Data First Published 2021-07-27
Language en-US
Data Last Modified 2023-03-16
Category GEDI, 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 Ralph Dubayah, Hao Tang, John Armston, Scott Luthcke, Michelle Hofton, James Blair. 2024-03-01. GEDI02_B.002. GEDI L2B Canopy Cover and Vertical Profile Metrics Data Global Footprint Level V002. Sioux Falls, South Dakota, USA. Archived by National Aeronautics and Space Administration, U.S. Government, NASA EOSDIS Land Processes Distributed Active Archive Center. https://doi.org/10.5067/GEDI/GEDI02_B.002. https://doi.org/10.5067/GEDI/GEDI02_B.002. The DOI landing page provides citations in APA and Chicago styles..
Creator Ralph Dubayah, Hao Tang, John Armston, Scott Luthcke, Michelle Hofton, James Blair
Graphic Preview Description Browse image for Earthdata Search
Graphic Preview File https://cmr.earthdata.nasa.gov/browse-scaler/browse_images/granules/G2751989897-LPCLOUD?h=85&w=85
Harvest Object Id be79e9df-942c-4503-a454-c81c087dd6ff
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://doi.org/10.5067/GEDI/GEDI02_B.002
Metadata Type geospatial
Old Spatial -180.0 -54.0 180.0 54.0
Program Code 026:001
Release Place Sioux Falls, South Dakota, USA
Series Name GEDI02_B.002
Source Datajson Identifier True
Source Hash 170fe6c3e1f822295c1f7280a685e7d189b23b36e1ac5803b8c058a0177ab263
Source Schema Version 1.1
Spatial
Temporal 2019-04-04T00:00:00Z/2023-03-16T23:59:59.999Z

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