谷歌地球引擎（GEE）--全球生态系统动态调查（GEDI）综合数据集（海拔高度、森林覆盖率、城市占比）

Beam identifier

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

Time delta since Jan 1 00:00 2018

TanDEM-X elevation at GEDI footprint location

STRM elevation at GEDI footprint location

Elevation of highest detected return relative to reference ellipsoid

Elevation of center of lowest mode relative to reference ellipsoid

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

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

Percent UMD GLAD Landsat observations with classified surface water

Latitude of highest detected return

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

GEDI 1 km EASE 2.0 grid flag

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

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

Longitude of highest detected return

Percent non-vegetated from MODIS MOD44B V6 data

Percent non-vegetated standard deviation from MODIS MOD44B V6 data

Percent tree cover from MODIS MOD44B V6 data

Percent tree cover standard deviation from MODIS MOD44B V6 data

Number of detected modes in rxwaveform

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

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

GEDI 1 km EASE 2.0 grid world continental regions

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

Identifier of mode selected as lowest non-noise mode

Flag indicating status of selected_mode

Maxmimum canopy cover that can be penetrated

Shot number, a unique identifier. This field is truncated on some images that are being reprocessed to properly show it (as of March 2022).

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

Solar azimuth

Solar elevation

Indicates elev_lowestmode is within 300 m of DEM or MSS

The focal window size used to calculate urban_proportion

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

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