CEOS EO HANDBOOK – INSTRUMENT SUMMARY - ALI -
Full Name Advanced Land Imager Status No longer operational
Instrument Agencies NASA Maturity
Instrument Type High resolution optical imagers Geometry Push-broom scanning
Instrument Technology High resolution optical imager Sampling Imaging
Data Access Open Access Data Format HDF or GeoTIFF
Measurements and Applications Measurement of Earth surface reflectance. Will validate new technologies contributing to cost reduction and increased capabilities for future missions. ALI comprises a wide field telescope and multispectral and panchromatic instrument.
Resolution Summary PAN: 10 m, VNIR and SWIR: 30 m
[Best Resolution: 10m]
Swath Summary 185 km
[Max Swath: 185 km]
Accuracy Summary SNR @ 5% surf refl Pan:220, Multi 1: 215, Multi 2: 280, Multi 3: 290, Multi 4:240, Multi 4':190, Multi 5':130, Multi 5:175, Multi 7:170 (prototype instrument exceeds ETM+ SNR by a factor of 4 - 8)
Waveband Summary 10 bands: VIS and NIR: 0.480 - 0.690 µm, 0.433 - 0.453 µm, 0.450 - 0.515 µm, 0.525 - 0.605 µm, 0.630 - 0.690 µm, 0.775 - 0.805 µm, 0.845 - 0.890 µm, 1.200 - 1.300 µm, SWIR: 1.550 - 1.750 µm, 2.080 - 2.350 µm
VIS (~0.40 µm - ~0.75 µm)
NIR (~0.75 µm - ~1.3 µm)
SWIR (~1.3 µm - ~3.0 µm)
Instrument Measurements
Measurements Overview
CategoryParameter
Albedo and reflectanceFraction of Absorbed PAR (FAPAR)
Earth surface albedo
Multi-purpose imagery (land)Land surface imagery
Radiation budgetShort-wave Earth surface bi-directional reflectance
Sea ice cover, edge and thicknessSea-ice cover
Glacier cover
Sea-ice thickness
Snow cover, edge and depthSnow cover
Surface temperature (land)Land surface temperature
Surface temperature (ocean)Sea surface temperature
VegetationVegetation type
Land cover
Soil type
Vegetation Cover
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Albedo click here click here search ECV Inventory records
Fraction of Absorbed Photosynthetically Active Radiation (FAPAR) click here click here search ECV Inventory records
Glaciers click here click here search ECV Inventory records
Land cover click here click here search ECV Inventory records
Land Surface Temperature click here click here search ECV Inventory records
Sea Ice click here click here search ECV Inventory records
Sea Surface Temperature click here click here search ECV Inventory records
Snow click here click here search ECV Inventory records
Instrument Missions
NMP EO-1 - New Millenium Program Earth Observing-1 (2000 - 2017)