GEDI L2B Raster Canopy Cover Vertical Profile Metrics (Version 2)

LARSE/GEDI/GEDI02_B_002_MONTHLY
Dataset Availability
2019-03-25T00:00:00Z–2023-03-01T08:00:00
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("LARSE/GEDI/GEDI02_B_002_MONTHLY")
Tags
elevation gedi larse nasa tree-cover usgs

Description

GEDI Level 2B Canopy Cover and Vertical Profile Metrics product (GEDI02_B) extracts biophysical metrics from each GEDI waveform. These metrics are based on the directional gap probability profile derived from the L1B waveform.

The vertical step between foliage profile measurements (known as dZ in GEDI documentation) is always 5 meters.

The dataset LARSE/GEDI/GEDI02_B_002_MONTHLY is a raster version of the original GEDI02_B product. The raster images are organized as monthly composites of individual orbits in the corresponding month. Only root-level cover, pai and pavd values and their associated quality flags and metadata are preserved as raster bands. Each GEDI02_B_002 raster has 109 bands.

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

Bands

Resolution
25 meters

Bands

Name Units Min Max Description
algorithmrun_flag 0 1

The L2B algorithm is run if this flag is set to 1 indicating data have sufficient waveform fidelity for L2B to run.

beam 0 11

Beam number

cover % 0 1

Total canopy cover

degrade_flag 0 99

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 seconds

Transmit time of the shot, measured in seconds from the master_time_epoch since 2018-01-01

fhd_normal

Foliage Height Diversity

l2b_quality_flag Quality Flag 0 1

L2B quality flag

local_beam_azimuth rad -180 180

Azimuth of the unit pointing vector for the laser in the local ENU frame measured from North and positive towards East.

local_beam_elevation rad 1.39 1.57

Elevation of the unit pointing vector for the laser in the local ENU frame measured from East-North plane and positive towards Up.

pai Area fraction

Total Plant Area Index

pgap_theta 0 1

Total Gap Probability (theta)

selected_l2a_algorithm 1 6

Selected L2A algorithm setting

selected_rg_algorithm 0 99

Selected R (ground) algorithm

sensitivity 0 1

Maxmimum canopy cover that can be penetrated

solar_azimuth deg -180 180

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

solar_elevation deg -90 90

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

shot_number

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
shot_number_within_beam

Shot number within beam

cover_z0 % 0 1

Cumulative canopy cover vertical profile at 0%

cover_z1 % 0 1

Cumulative canopy cover vertical profile at 1%

cover_z2 % 0 1

Cumulative canopy cover vertical profile at 2%

cover_z3 % 0 1

Cumulative canopy cover vertical profile at 3%

cover_z4 % 0 1

Cumulative canopy cover vertical profile at 4%

cover_z5 % 0 1

Cumulative canopy cover vertical profile at 5%

cover_z6 % 0 1

Cumulative canopy cover vertical profile at 6%

cover_z7 % 0 1

Cumulative canopy cover vertical profile at 7%

cover_z8 % 0 1

Cumulative canopy cover vertical profile at 8%

cover_z9 % 0 1

Cumulative canopy cover vertical profile at 9%

cover_z10 % 0 1

Cumulative canopy cover vertical profile at 10%

cover_z11 % 0 1

Cumulative canopy cover vertical profile at 11%

cover_z12 % 0 1

Cumulative canopy cover vertical profile at 12%

cover_z13 % 0 1

Cumulative canopy cover vertical profile at 13%

cover_z14 % 0 1

Cumulative canopy cover vertical profile at 14%

cover_z15 % 0 1

Cumulative canopy cover vertical profile at 15%

cover_z16 % 0 1

Cumulative canopy cover vertical profile at 16%

cover_z17 % 0 1

Cumulative canopy cover vertical profile at 17%

cover_z18 % 0 1

Cumulative canopy cover vertical profile at 18%

cover_z19 % 0 1

Cumulative canopy cover vertical profile at 19%

cover_z20 % 0 1

Cumulative canopy cover vertical profile at 20%

cover_z21 % 0 1

Cumulative canopy cover vertical profile at 21%

cover_z22 % 0 1

Cumulative canopy cover vertical profile at 22%

cover_z23 % 0 1

Cumulative canopy cover vertical profile at 23%

cover_z24 % 0 1

Cumulative canopy cover vertical profile at 24%

cover_z25 % 0 1

Cumulative canopy cover vertical profile at 25%

cover_z26 % 0 1

Cumulative canopy cover vertical profile at 26%

cover_z27 % 0 1

Cumulative canopy cover vertical profile at 27%

cover_z28 % 0 1

Cumulative canopy cover vertical profile at 28%

cover_z29 % 0 1

Cumulative canopy cover vertical profile at 29%

cover_z30 % 0 1

Cumulative canopy cover vertical profile at 30%

pai_z0 Area fraction

Plant Area Index profile in 0 m²/m²

pai_z1 Area fraction

Plant Area Index profile in 1 m²/m²

pai_z2 Area fraction

Plant Area Index profile in 2 m²/m²

pai_z3 Area fraction

Plant Area Index profile in 3 m²/m²

pai_z4 Area fraction

Plant Area Index profile in 4 m²/m²

pai_z5 Area fraction

Plant Area Index profile in 5 m²/m²

pai_z6 Area fraction

Plant Area Index profile in 6 m²/m²

pai_z7 Area fraction

Plant Area Index profile in 7 m²/m²

pai_z8 Area fraction

Plant Area Index profile in 8 m²/m²

pai_z9 Area fraction

Plant Area Index profile in 9 m²/m²

pai_z10 Area fraction

Plant Area Index profile in 10 m²/m²

pai_z11 Area fraction

Plant Area Index profile in 11 m²/m²

pai_z12 Area fraction

Plant Area Index profile in 12 m²/m²

pai_z13 Area fraction

Plant Area Index profile in 13 m²/m²

pai_z14 Area fraction

Plant Area Index profile in 14 m²/m²

pai_z15 Area fraction

Plant Area Index profile in 15 m²/m²

pai_z16 Area fraction

Plant Area Index profile in 16 m²/m²

pai_z17 Area fraction

Plant Area Index profile in 17 m²/m²

pai_z18 Area fraction

Plant Area Index profile in 18 m²/m²

pai_z19 Area fraction

Plant Area Index profile in 19 m²/m²

pai_z20 Area fraction

Plant Area Index profile in 20 m²/m²

pai_z21 Area fraction

Plant Area Index profile in 21 m²/m²

pai_z22 Area fraction

Plant Area Index profile in 22 m²/m²

pai_z23 Area fraction

Plant Area Index profile in 23 m²/m²

pai_z24 Area fraction

Plant Area Index profile in 24 m²/m²

pai_z25 Area fraction

Plant Area Index profile in 25 m²/m²

pai_z26 Area fraction

Plant Area Index profile in 26 m²/m²

pai_z27 Area fraction

Plant Area Index profile in 27 m²/m²

pai_z28 Area fraction

Plant Area Index profile in 28 m²/m²

pai_z29 Area fraction

Plant Area Index profile in 29 m²/m²

pai_z30 Area fraction

Plant Area Index profile in 30 m²/m²

pavd_z0 m^2/m^3

Plant Area Volume Density profile in 0 m²/m³

pavd_z1 m^2/m^3

Plant Area Volume Density profile in 1 m²/m³

pavd_z2 m^2/m^3

Plant Area Volume Density profile in 2 m²/m³

pavd_z3 m^2/m^3

Plant Area Volume Density profile in 3 m²/m³

pavd_z4 m^2/m^3

Plant Area Volume Density profile in 4 m²/m³

pavd_z5 m^2/m^3

Plant Area Volume Density profile in 5 m²/m³

pavd_z6 m^2/m^3

Plant Area Volume Density profile in 6 m²/m³

pavd_z7 m^2/m^3

Plant Area Volume Density profile in 7 m²/m³

pavd_z8 m^2/m^3

Plant Area Volume Density profile in 8 m²/m³

pavd_z9 m^2/m^3

Plant Area Volume Density profile in 9 m²/m³

pavd_z10 m^2/m^3

Plant Area Volume Density profile in 10 m²/m³

pavd_z11 m^2/m^3

Plant Area Volume Density profile in 11 m²/m³

pavd_z12 m^2/m^3

Plant Area Volume Density profile in 12 m²/m³

pavd_z13 m^2/m^3

Plant Area Volume Density profile in 13 m²/m³

pavd_z14 m^2/m^3

Plant Area Volume Density profile in 14 m²/m³

pavd_z15 m^2/m^3

Plant Area Volume Density profile in 15 m²/m³

pavd_z16 m^2/m^3

Plant Area Volume Density profile in 16 m²/m³

pavd_z17 m^2/m^3

Plant Area Volume Density profile in 17 m²/m³

pavd_z18 m^2/m^3

Plant Area Volume Density profile in 18 m²/m³

pavd_z19 m^2/m^3

Plant Area Volume Density profile in 19 m²/m³

pavd_z20 m^2/m^3

Plant Area Volume Density profile in 20 m²/m³

pavd_z21 m^2/m^3

Plant Area Volume Density profile in 21 m²/m³

pavd_z22 m^2/m^3

Plant Area Volume Density profile in 22 m²/m³

pavd_z23 m^2/m^3

Plant Area Volume Density profile in 23 m²/m³

pavd_z24 m^2/m^3

Plant Area Volume Density profile in 24 m²/m³

pavd_z25 m^2/m^3

Plant Area Volume Density profile in 25 m²/m³

pavd_z26 m^2/m^3

Plant Area Volume Density profile in 26 m²/m³

pavd_z27 m^2/m^3

Plant Area Volume Density profile in 27 m²/m³

pavd_z28 m^2/m^3

Plant Area Volume Density profile in 28 m²/m³

pavd_z29 m^2/m^3

Plant Area Volume Density profile in 29 m²/m³

pavd_z30 m^2/m^3

Plant Area Volume Density profile in 30 m²/m³

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.

Explore with Earth Engine

Code Editor (JavaScript)

var qualityMask = function(im) {
  return im.updateMask(im.select('l2b_quality_flag').eq(1))
      .updateMask(im.select('degrade_flag').eq(0));
};
var dataset = ee.ImageCollection('LARSE/GEDI/GEDI02_B_002_MONTHLY')
                  .map(qualityMask)
                  .select('solar_elevation');

var gediVis = {
  min: 1,
  max: 60,
  palette: 'red, green, blue',
};
Map.setCenter(12.60033, 51.01051, 12);
Map.addLayer(dataset, gediVis, 'Solar Elevation');
Open in Code Editor