THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
Measurements > Land >
Vegetation >
Leaf Area Index (LAI)


Measurement Definition*: One half of the total projected green leaf fractional area in the plant canopy within a given area. Representative of total biomass and health of vegetation - Physical unit: [ % ] - Accuracy unit: [ % ].
InstrumentStatus/
Accuracy
Instrument DescriptionMeasurement TechnologyTimeline
CHRIS
Compact High Resolution Imaging Spectrometer
Operational
Supports a range of land, ocean and atmospheric applications, including agricultural science, forestry, environmental science, atmospheric science and oceanography.High resolution optical imager
ETM+
Enhanced Thematic Mapper Plus
Operational
Measures surface radiance and emittance, land cover state and change (eg vegetation type). Used as multi-purpose imagery for land applications.High resolution optical imager
MISR
Multi-angle Imaging SpectroRadiometer
Operational
Measurements of global surface albedo, aerosol and vegetation properties. Also provides multi-angle bidirectional data (1% angle-to-angle accuracy) for cloud cover and reflectances at the surface and aerosol opacities. Global and local modes.n/a
MODIS
MODerate-Resolution Imaging Spectroradiometer
Operational
Data on biological and physical processes on the surface of the Earth and in the lower atmosphere, and on global dynamics. Surface temperatures of land and ocean, chlorophyll fluorescence, land cover measurements, cloud cover (day and night).n/a
MS
Multispectral Imager
Operational
Vegetation and land cover, land cover change.n/a
MSI (Sentinel-2)
Multi-Spectral Instrument (Sentinel-2)
Operational
Optical high spatial resolution imagery over land and coastal areas for GMES operational services.High resolution optical imager
OLCI
Ocean and Land Colour Imager
Operational
Marine and land services.n/a
OLI
Operational Land Imager
Operational
Measures surface radiance, land cover state and change (eg vegetation type). Used as multi-purpose imagery for land applications.High resolution optical imager
SGLI
Second-generation Global Imager
Operational
+/-30 %
Medium resolution multi-spectral imaging of land, ocean and atmosphere. SGLI-VNR is an optical sensor capable of multi-channel nadir observation at wavelengths from near-UV to NIR and forward or backward polarization observation at red and near infrared wavelengths (Push-broom scanning). SGLI-IRS is an optical sensor capable of multi-channel nadir observation at wavelengths from SWIR to TIR wavelengths (Cross-track scanning).n/a
SLIM-6-22
Surrey Linear Imager - 6 channel - 22m resolution
Operational
Visible and NIR imagery in support of disaster management - part of the Disaster Management constellation.High resolution optical imager
Vegetation
Vegetation
Operational
Global coverage every two days for uses including climate impact assessments, surface water resource management, agricultural monitoring, and food security estimates.n/a
VIIRS
Visible/Infrared Imager Radiometer Suite
Operational
Global observations of land, ocean, and atmosphere parameters: cloud/weather imagery, sea-surface temperature, ocean colour, land surface vegetation indices.n/a
VSC
Venus Superspectral Camera
Operational
High resolution superspectral images (12 spectral bands) for vegetation and landcover applications.High resolution optical imager
OLI-2
Operational Land Imager-2
Being developed
Measures surface radiance, land cover state and change (e.g., vegetation type). Used as multi-purpose imagery for land applications.High resolution optical imager
* Description adapted from WMO.
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