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Description
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 instrument was removed from the ISS and placed into storage on March 17, 2023. No data were acquired during the hibernation period from March 17, 2023, to April 24, 2024. GEDI has since been reinstalled on the ISS and resumed operations as of April 26, 2024.
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.
Known Issues
Data acquisition gaps: GEDI data acquisitions were suspended on December 19, 2019 (2019 Day 353) and resumed on January 8, 2020 (2020 Day 8).
Incorrect Reference Ground Track (RGT) number in the filename for select GEDI files: GEDI Science Data Products for six orbits on August 7, 2020, and November 12, 2021, had the incorrect RGT number in the filename. There is no impact to the science data, but users should reference this document for the correct RGT numbers.
Known Issues: Section 8 of the User Guide provides additional information on known issues.
Version Description
The following changes and improvements were implemented for GEDI Version 2 data products: (1) Reduced granule size from one full ISS orbit (~7.99 GB) to four segments per orbit (~2.00 GB), (2) Modified file name to include segment number and dataset version, (3) Improved geolocation for orbital segments, (4) Added elevation from the SRTM digital elevation model for comparison, (5) Modified the method to predict an optimum algorithm setting group per laser shot, (6) Added additional land cover datasets related to phenology, urban infrastructure, and water persistence, (7) Added selected_mode_flag dataset to root beam group using selected algorithm, and (8) Removed shots when the laser is not firing.
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
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Dubayah, R., Tang, H., Armston, J., Luthcke, S., Hofton, M., & Blair, J. (2021). GEDI L2B Canopy Cover and Vertical Profile Metrics Data Global Footprint Level V002 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/GEDI/GEDI02_B.002 Date Accessed: 2026-05-14
Dubayah, Ralph, Hao Tang, John Armston, Scott Luthcke, Michelle Hofton, and James Blair. “GEDI L2B Canopy Cover and Vertical Profile Metrics Data Global Footprint Level V002.” NASA Land Processes Distributed Active Archive Center, 2021. doi:10.5067/GEDI/GEDI02_B.002. Date Accessed: 2026-05-14
Dubayah, Ralph, et al. GEDI L2B Canopy Cover and Vertical Profile Metrics Data Global Footprint Level V002. NASA Land Processes Distributed Active Archive Center, 2021, doi:10.5067/GEDI/GEDI02_B.002. Date Accessed: 2026-05-14
The file name begins with the Product Short Name (GEDI02_B), followed by the Julian Date and Time of Acquisition designated as YYYYDDDHHMMSS (2024333221021), the Orbit Number starting with the letter O (O33779), the Sub-Orbit Granule Number (03), Track Number (T07960), the Positioning and Pointing Determination System type where 00 is predict, 01 rapid, 02 and higher is final (02), the Product Generation Executables Version (004), the Granule Production Version (01), the Version Number (V002), and the Data Format (h5).
Abbasi, Akane O., Tang, Xiaolu, Harris, Nancy L., Goldman, Elizabeth D., Gamarra, Javier G. P., Herold, Martin, Kim, Hyun Seok, Luo, Weixue, Silva, Carlos Alberto, Tchebakova, Nadezhda M., Mitra, Ankita, Finegold, Yelena, Jahanshahi, Mohammad Reza, Alvarez, Cesar Ivan, Kim, Tae Kyung, Ryu, Daun, Liang, Jingjing
de Sousa, Celio, Fatoyinbo, Lola, Honzak, Miroslav, Wright, Timothy Max, Murillo Sandoval, Paulo Jose, Whapoe, Zargou Elijah, Yonmah, Jerry, Olatunji, Emmanuel Temitope, Garteh, Jerry, Stovall, Atticus, Neigh, Christopher S. R., Portela, Rosimeiry, Gaddis, Keith D., Larsen, Trond, Juhn, Daniel
Crockett, Erin T.H., Atkins, Jeff W., Guo, Qinfeng, Sun, Ge, Potter, Kevin M., Ollinger, Scott, Silva, Carlos A., Tang, Hao, Woodall, Christopher W., Holgerson, Justin, Xiao, Jingfeng
Duncanson, L., Liang, M., Leitold, V., Armston, J., Krishna Moorthy, S. M., Dubayah, R., Costedoat, S., Enquist, B. J., Fatoyinbo, L., Goetz, S. J., Gonzalez-Roglich, M., Merow, C., Roehrdanz, P. R., Tabor, K., Zvoleff, A.
The table below lists the variables contained within a single granule for this
dataset. Variables often contain observed or derived geophysical measurements
collected from a variety of sources, including remote sensing instruments on
satellite and airborne platforms, field campaigns, in situ measurements, and
model outputs. The terms variable, parameter, scientific data set, layer, and band
have been used across NASA’s Earth science disciplines; however, variable is the
designated nomenclature in NASA’s Common Metadata Repository (CMR).
Variable metadata attributes such as Name, Description, Units, Data Type, Fill
Value, Valid Range, and Scale Factor allow users to efficiently process and analyze
the data. The full range of attributes may not be applicable to all variables.
Additional information on variable attributes is typically available in the data,
user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
Integral of the ground component in the RX waveform for each L2A processing version
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_a6
Integral of the ground component in the RX waveform for each L2A processing version
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_a1
Amplitude of the extended Gaussian fit to the ground of RX waveform.
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_a2
Amplitude of the extended Gaussian fit to the ground of RX waveform.
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_a3
Amplitude of the extended Gaussian fit to the ground of RX waveform.
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_a4
Amplitude of the extended Gaussian fit to the ground of RX waveform.
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_a5
Amplitude of the extended Gaussian fit to the ground of RX waveform.
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_a6
Amplitude of the extended Gaussian fit to the ground of RX waveform.
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_error_a1
Error in rg_eg_amplitude
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_error_a2
Error in rg_eg_amplitude
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_error_a3
Error in rg_eg_amplitude
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_error_a4
Error in rg_eg_amplitude
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_error_a5
Error in rg_eg_amplitude
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_amplitude_error_a6
Error in rg_eg_amplitude
counts
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_a1
Center of the extended Gaussian fit to the ground of RX waveform.
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_a2
Center of the extended Gaussian fit to the ground of RX waveform.
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_a3
Center of the extended Gaussian fit to the ground of RX waveform.
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_a4
Center of the extended Gaussian fit to the ground of RX waveform.
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_a5
Center of the extended Gaussian fit to the ground of RX waveform.
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_a6
Center of the extended Gaussian fit to the ground of RX waveform.
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_error_a1
Error in rg_eg_center
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_error_a2
Error in rg_eg_center
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_error_a3
Error in rg_eg_center
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_error_a4
Error in rg_eg_center
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_error_a5
Error in rg_eg_center
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_center_error_a6
Error in rg_eg_center
ns
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_chisq_a1
Chi square of R (ground) fit
N/A
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_chisq_a2
Chi square of R (ground) fit
N/A
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_chisq_a3
Chi square of R (ground) fit
N/A
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_chisq_a4
Chi square of R (ground) fit
N/A
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_chisq_a5
Chi square of R (ground) fit
N/A
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_chisq_a6
Chi square of R (ground) fit
N/A
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_flag_a1
Extended Gaussian fit status flag. 1=convergence in chi2 value, 2=convergence in parameter value, 3=convergence in chi2 and parameter values, 4=convergence in orthogonality, 5=maximum number of iterations reached, 6=ftol too small (no further improvement), 7=xtol too small (no further improvement), 8=gtol too small (no further improvement).
N/A
int8
N/A
0 to -1
N/A
N/A
/BEAM0000/rx_processing/rg_eg_flag_a2
Extended Gaussian fit status flag. 1=convergence in chi2 value, 2=convergence in parameter value, 3=convergence in chi2 and parameter values, 4=convergence in orthogonality, 5=maximum number of iterations reached, 6=ftol too small (no further improvement), 7=xtol too small (no further improvement), 8=gtol too small (no further improvement).
N/A
int8
N/A
0 to -1
N/A
N/A
/BEAM0000/rx_processing/rg_eg_flag_a3
Extended Gaussian fit status flag. 1=convergence in chi2 value, 2=convergence in parameter value, 3=convergence in chi2 and parameter values, 4=convergence in orthogonality, 5=maximum number of iterations reached, 6=ftol too small (no further improvement), 7=xtol too small (no further improvement), 8=gtol too small (no further improvement).
N/A
int8
N/A
0 to -1
N/A
N/A
/BEAM0000/rx_processing/rg_eg_flag_a4
Extended Gaussian fit status flag. 1=convergence in chi2 value, 2=convergence in parameter value, 3=convergence in chi2 and parameter values, 4=convergence in orthogonality, 5=maximum number of iterations reached, 6=ftol too small (no further improvement), 7=xtol too small (no further improvement), 8=gtol too small (no further improvement).
N/A
int8
N/A
0 to -1
N/A
N/A
/BEAM0000/rx_processing/rg_eg_flag_a5
Extended Gaussian fit status flag. 1=convergence in chi2 value, 2=convergence in parameter value, 3=convergence in chi2 and parameter values, 4=convergence in orthogonality, 5=maximum number of iterations reached, 6=ftol too small (no further improvement), 7=xtol too small (no further improvement), 8=gtol too small (no further improvement).
N/A
int8
N/A
0 to -1
N/A
N/A
/BEAM0000/rx_processing/rg_eg_flag_a6
Extended Gaussian fit status flag. 1=convergence in chi2 value, 2=convergence in parameter value, 3=convergence in chi2 and parameter values, 4=convergence in orthogonality, 5=maximum number of iterations reached, 6=ftol too small (no further improvement), 7=xtol too small (no further improvement), 8=gtol too small (no further improvement).
N/A
int8
N/A
0 to -1
N/A
N/A
/BEAM0000/rx_processing/rg_eg_gamma_a1
Gamma value of the extended Gaussian fit to the ground of RX waveform.
N/A
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_gamma_a2
Gamma value of the extended Gaussian fit to the ground of RX waveform.
N/A
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_gamma_a3
Gamma value of the extended Gaussian fit to the ground of RX waveform.
N/A
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_gamma_a4
Gamma value of the extended Gaussian fit to the ground of RX waveform.
N/A
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_gamma_a5
Gamma value of the extended Gaussian fit to the ground of RX waveform.
N/A
float32
-9999
N/A
N/A
N/A
/BEAM0000/rx_processing/rg_eg_gamma_a6
Gamma value of the extended Gaussian fit to the ground of RX waveform.