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GEDI L1B Geolocated Waveform Data Global Footprint Level V002

Metadata Updated: December 7, 2023

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 GEDI Level 1B Geolocated Waveforms product (GEDI01_B) provides geolocated corrected and smoothed waveforms, geolocation parameters, and geophysical corrections for each laser shot for all eight GEDI beams. GEDI01_B data are created by geolocating the GEDI01_A raw waveform data. The GEDI01_B product is provided in HDF5 format and has a spatial resolution (average footprint) of 25 meters.

The GEDI01_B data product contains 85 layers for each of the eight beams including the geolocated corrected and smoothed waveform datasets and parameters and the accompanying ancillary, geolocation, and geophysical correction. Additional information can be found in the GEDI L1B Product Data Dictionary.

Improvements for Version 2 * Metadata has been updated to include spatial coordinates. * Granule size has been reduced from one full ISS orbit (~5.8 GB) to four segments per orbit (~1.5 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 December 1, 2022
Metadata Updated Date December 7, 2023

Metadata Source

Harvested from NASA Data.json

Graphic Preview

Browse image for Earthdata Search

Additional Metadata

Resource Type Dataset
Metadata Created Date December 1, 2022
Metadata Updated Date December 7, 2023
Publisher LP DAAC
Maintainer
Identifier C1908344278-LPDAAC_ECS
Data First Published 2019-04-04
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, Scott Luthcke, James Blair, Michelle Hofton, John Armston, Hao Tang. 2021-04-16. GEDI01_B.002. GEDI L1B Geolocated Waveform Data Global Footprint Level V002. Archived by National Aeronautics and Space Administration, U.S. Government, NASA EOSDIS Land Processes DAAC. https://doi.org/10.5067/GEDI/GEDI01_B.002. https://doi.org/10.5067/GEDI/GEDI01_B.002. The DOI landing page provides citations in APA and Chicago styles..
Creator Ralph Dubayah, Scott Luthcke, James Blair, Michelle Hofton, John Armston, Hao Tang
Graphic Preview Description Browse image for Earthdata Search
Graphic Preview File https://e4ftl01.cr.usgs.gov//WORKING/BRWS/Browse.001/2021.04.11/GEDI01_B_2020106212107_O07604_03_T02729_02_005_01_V002.png
Harvest Object Id bae11db1-b88b-463e-bde9-822f9040e176
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://doi.org/10.5067/GEDI/GEDI01_B.002
Metadata Type geospatial
Old Spatial -180.0 -54.0 180.0 54.0
Program Code 026:001
Series Name GEDI01_B.002
Source Datajson Identifier True
Source Hash b28df1ceca5e77c7d0bcfb40a4d6f678d7fca13e26fb9769b45cd498d28418a8
Source Schema Version 1.1
Spatial
Temporal 2019-04-04T00:00:00Z/2023-08-21T00:00:00Z

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