GEDI L2A Vector Canopy Top Height (Version 2)

LARSE/GEDI/GEDI02_A_002

Description

GEDI's Level 2A Geolocated Elevation and Height Metrics Product (GEDI02_A) is primarily composed of 100 Relative Height (RH) metrics, which collectively describe the waveform collected by GEDI.

The original GEDI02_A product is a table of point with a spatial resolution (average footprint) of 25 meters.

Please see User Guide for more information.

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, attached to the International Space Station (ISS), collects data globally between 51.6° N and 51.6° S latitudes at the highest resolution and densest sampling of the 3-dimensional structure of the Earth. The GEDI instrument consists of three lasers producing a total of eight beam ground transects, which instantaneously sample eight ~25 m footprints spaced approximately every 60 m along-track.

Product Description
L2A Vector LARSE/GEDI/GEDI02_A_002
L2A Monthly raster LARSE/GEDI/GEDI02_A_002_MONTHLY
L2A table index LARSE/GEDI/GEDI02_A_002_INDEX
L2B Vector LARSE/GEDI/GEDI02_B_002
L2B Monthly raster LARSE/GEDI/GEDI02_B_002_MONTHLY
L2B table index LARSE/GEDI/GEDI02_B_002_INDEX
L4A Biomass Vector LARSE/GEDI/GEDI04_A_002
L4A Monthly raster LARSE/GEDI/GEDI04_A_002_MONTHLY
L4A table index LARSE/GEDI/GEDI04_A_002_INDEX
L4B Biomass LARSE/GEDI/GEDI04_B_002

Table Schema

Table Schema

Name Type Description
beam INT

Beam identifier
degrade_flag INT

Flag indicating degraded state of pointing and/or positioning information.

  • 3X - ADF CHU solution unavailable (ST-2)
  • 4X - Platform attitude
  • 5X - Poor solution (filter covariance large)
  • 6X - Data outage (platform attitude gap also)
  • 7X - ST 1+2 unavailable (similar boresight FOV)
  • 8X - ST 1+2+3 unavailable
  • 9X - ST 1+2+3 and ISS unavailable
  • X1 - Maneuver
  • X2 - GPS data gap
  • X3 - ST blinding
  • X4 - Other
  • X5 - GPS receiver clock drift
  • X6 - Maneuver & GPS receiver clock drift
  • X7 - GPS data gap & GPS receiver clock drift
  • X8 - ST blinding & GPS receiver clock drift
  • X9 - Other & GPS receiver clock drift
delta_time DOUBLE

Time delta since Jan 1 00:00 2018
digital_elevation_model DOUBLE

TanDEM-X elevation at GEDI footprint location
digital_elevation_model_srtm DOUBLE

SRTM elevation at GEDI footprint location
elev_highestreturn DOUBLE

Elevation of highest detected return relative to reference ellipsoid
elev_lowestmode DOUBLE

Elevation of center of lowest mode relative to reference ellipsoid
elevation_bias_flag INT

Elevations potentially affected by 4bin (~60 cm) ranging error
energy_total DOUBLE

Integrated counts in the return waveform relative to the mean noise level
landsat_treecover DOUBLE

Tree cover in the year 2010, defined as canopy closure for all vegetation taller than 5 m in height as a percentage per output grid cell
landsat_water_persistence INT

Percent UMD GLAD Landsat observations with classified surface water
lat_highestreturn DOUBLE

Latitude of highest detected return
leaf_off_doy INT

GEDI 1 km EASE 2.0 grid leaf-off start day-of-year
leaf_off_flag INT

GEDI 1 km EASE 2.0 grid flag
leaf_on_cycle INT

Flag that indicates the vegetation growing cycle for leaf-on observations
leaf_on_doy INT

GEDI 1 km EASE 2.0 grid leaf-on start day-of-year
lon_highestreturn DOUBLE

Longitude of highest detected return
modis_nonvegetated DOUBLE

Percent non-vegetated from MODIS MOD44B V6 data
modis_nonvegetated_sd DOUBLE

Percent non-vegetated standard deviation from MODIS MOD44B V6 data
modis_treecover DOUBLE

Percent tree cover from MODIS MOD44B V6 data
modis_treecover_sd DOUBLE

Percent tree cover standard deviation from MODIS MOD44B V6 data
num_detectedmodes INT

Number of detected modes in rxwaveform
pft_class INT

GEDI 1 km EASE 2.0 grid Plant Functional Type (PFT)
quality_flag INT

Flag indicating likely invalid waveform (1=valid, 0=invalid)
region_class INT

GEDI 1 km EASE 2.0 grid world continental regions
selected_algorithm INT

Identifier of algorithm selected as identifying the lowest non-noise mode
selected_mode INT

Identifier of mode selected as lowest non-noise mode
selected_mode_flag INT

Flag indicating status of selected_mode
sensitivity DOUBLE

Maxmimum canopy cover that can be penetrated. Valid range is [0, 1]. Values outside of this range may be present but must be ignored. They represent noise and non-land surface waveforms.
solar_azimuth DOUBLE

The azimuth of the sun position vector from the laser bounce point position in the local ENU frame. The angle is measured from North and is positive towards East.
solar_elevation DOUBLE

The elevation of the sun position vector from the laser bounce point position in the local ENU frame. The angle is measured from the East-North plane and is positive Up.
surface_flag INT

Indicates elev_lowestmode is within 300m of Digital Elevation Model (DEM) or Mean Sea Surface (MSS) elevation
urban_focal_window_size INT

The focal window size used to calculate urban_proportion. Values are 3 (3x3 pixel window size) or 5 (5x5 pixel window size).
urban_proportion INT

The percentage proportion of land area within a focal area surrounding each shot that is urban land cover.
orbit_number INT

Orbit number
minor_frame_number INT

Minor frame number 0-241()
shot_number_within_beam INT

Shot number within beam
local_beam_azimuth DOUBLE

Azimuth in radians of the unit pointing vector for the laser in the local ENU frame. The angle is measured from North and positive towards East.
local_beam_elevation DOUBLE

Elevation in radians of the unit pointing vector for the laser in the local ENU frame. The angle is measured from North and positive towards East.
shot_number STRING

Shot number, a unique identifier. This field has the format of OOOOOBBRRGNNNNNNNN, where:

  • OOOOO: Orbit number
  • BB: Beam number
  • RR: Reserved for future use
  • G: Sub-orbit granule number
  • NNNNNNNN: Shot index
rh0 DOUBLE

Relative height metrics at 0%
rh1 DOUBLE

Relative height metrics at 1%
rh2 DOUBLE

Relative height metrics at 2%
rh3 DOUBLE

Relative height metrics at 3%
rh4 DOUBLE

Relative height metrics at 4%
rh5 DOUBLE

Relative height metrics at 5%
rh6 DOUBLE

Relative height metrics at 6%
rh7 DOUBLE

Relative height metrics at 7%
rh8 DOUBLE

Relative height metrics at 8%
rh9 DOUBLE

Relative height metrics at 9%
rh10 DOUBLE

Relative height metrics at 10%
rh11 DOUBLE

Relative height metrics at 11%
rh12 DOUBLE

Relative height metrics at 12%
rh13 DOUBLE

Relative height metrics at 13%
rh14 DOUBLE

Relative height metrics at 14%
rh15 DOUBLE

Relative height metrics at 15%
rh16 DOUBLE

Relative height metrics at 16%
rh17 DOUBLE

Relative height metrics at 17%
rh18 DOUBLE

Relative height metrics at 18%
rh19 DOUBLE

Relative height metrics at 19%
rh20 DOUBLE

Relative height metrics at 20%
rh21 DOUBLE

Relative height metrics at 21%
rh22 DOUBLE

Relative height metrics at 22%
rh23 DOUBLE

Relative height metrics at 23%
rh24 DOUBLE

Relative height metrics at 24%
rh25 DOUBLE

Relative height metrics at 25%
rh26 DOUBLE

Relative height metrics at 26%
rh27 DOUBLE

Relative height metrics at 27%
rh28 DOUBLE

Relative height metrics at 28%
rh29 DOUBLE

Relative height metrics at 29%
rh30 DOUBLE

Relative height metrics at 30%
rh31 DOUBLE

Relative height metrics at 31%
rh32 DOUBLE

Relative height metrics at 32%
rh33 DOUBLE

Relative height metrics at 33%
rh34 DOUBLE

Relative height metrics at 34%
rh35 DOUBLE

Relative height metrics at 35%
rh36 DOUBLE

Relative height metrics at 36%
rh37 DOUBLE

Relative height metrics at 37%
rh38 DOUBLE

Relative height metrics at 38%
rh39 DOUBLE

Relative height metrics at 39%
rh40 DOUBLE

Relative height metrics at 40%
rh41 DOUBLE

Relative height metrics at 41%
rh42 DOUBLE

Relative height metrics at 42%
rh43 DOUBLE

Relative height metrics at 43%
rh44 DOUBLE

Relative height metrics at 44%
rh45 DOUBLE

Relative height metrics at 45%
rh46 DOUBLE

Relative height metrics at 46%
rh47 DOUBLE

Relative height metrics at 47%
rh48 DOUBLE

Relative height metrics at 48%
rh49 DOUBLE

Relative height metrics at 49%
rh50 DOUBLE

Relative height metrics at 50%
rh51 DOUBLE

Relative height metrics at 51%
rh52 DOUBLE

Relative height metrics at 52%
rh53 DOUBLE

Relative height metrics at 53%
rh54 DOUBLE

Relative height metrics at 54%
rh55 DOUBLE

Relative height metrics at 55%
rh56 DOUBLE

Relative height metrics at 56%
rh57 DOUBLE

Relative height metrics at 57%
rh58 DOUBLE

Relative height metrics at 58%
rh59 DOUBLE

Relative height metrics at 59%
rh60 DOUBLE

Relative height metrics at 60%
rh61 DOUBLE

Relative height metrics at 61%
rh62 DOUBLE

Relative height metrics at 62%
rh63 DOUBLE

Relative height metrics at 63%
rh64 DOUBLE

Relative height metrics at 64%
rh65 DOUBLE

Relative height metrics at 65%
rh66 DOUBLE

Relative height metrics at 66%
rh67 DOUBLE

Relative height metrics at 67%
rh68 DOUBLE

Relative height metrics at 68%
rh69 DOUBLE

Relative height metrics at 69%
rh70 DOUBLE

Relative height metrics at 70%
rh71 DOUBLE

Relative height metrics at 71%
rh72 DOUBLE

Relative height metrics at 72%
rh73 DOUBLE

Relative height metrics at 73%
rh74 DOUBLE

Relative height metrics at 74%
rh75 DOUBLE

Relative height metrics at 75%
rh76 DOUBLE

Relative height metrics at 76%
rh77 DOUBLE

Relative height metrics at 77%
rh78 DOUBLE

Relative height metrics at 78%
rh79 DOUBLE

Relative height metrics at 79%
rh80 DOUBLE

Relative height metrics at 80%
rh81 DOUBLE

Relative height metrics at 81%
rh82 DOUBLE

Relative height metrics at 82%
rh83 DOUBLE

Relative height metrics at 83%
rh84 DOUBLE

Relative height metrics at 84%
rh85 DOUBLE

Relative height metrics at 85%
rh86 DOUBLE

Relative height metrics at 86%
rh87 DOUBLE

Relative height metrics at 87%
rh88 DOUBLE

Relative height metrics at 88%
rh89 DOUBLE

Relative height metrics at 89%
rh90 DOUBLE

Relative height metrics at 90%
rh91 DOUBLE

Relative height metrics at 91%
rh92 DOUBLE

Relative height metrics at 92%
rh93 DOUBLE

Relative height metrics at 93%
rh94 DOUBLE

Relative height metrics at 94%
rh95 DOUBLE

Relative height metrics at 95%
rh96 DOUBLE

Relative height metrics at 96%
rh97 DOUBLE

Relative height metrics at 97%
rh98 DOUBLE

Relative height metrics at 98%
rh99 DOUBLE

Relative height metrics at 99%
rh100 DOUBLE

Relative height metrics at 100%

Terms of Use

Terms of Use

This dataset is in the public domain and is available without restriction on use and distribution. See NASA's Earth Science Data & Information Policy for additional information.

Citations

Citations:

  • GEDI L2A Elevation and Height Metrics Data Global Footprint Level - GEDI02_A Dubayah, R., M. Hofton, J. Blair, J. Armston, H. Tang, S. Luthcke. GEDI L2A Elevation and Height Metrics Data Global Footprint Level V002. 2021, distributed by NASA EOSDIS Land Processes DAAC. Accessed YYYY-MM-DD.

DOIs

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Code Editor (JavaScript)

var dataset = ee.FeatureCollection('LARSE/GEDI/GEDI02_A_002/GEDI02_A_2021244154857_O15413_04_T05622_02_003_02_V002');
dataset = dataset.style({color: 'black',  pointSize: 1});
Map.setCenter(-64.88, -31.77, 15);
Map.addLayer(dataset);
Open in Code Editor
GEDI's Level 2A Geolocated Elevation and Height Metrics Product (GEDI02_A) is primarily composed of 100 Relative Height (RH) metrics, which collectively describe the waveform collected by GEDI. The original GEDI02_A product is a table of point with a spatial resolution (average footprint) of 25 meters. Please see User Guide for …
LARSE/GEDI/GEDI02_A_002, elevation,gedi,larse,nasa,tree-cover,usgs
2019-03-25T00:00:00Z/2023-01-01T00:00:00Z
-51.6 -180.0 51.6 180.0
Google Earth Engine