CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
Measurements > Atmosphere >
Radiation budget >
Upwelling (Outgoing) spectral radiance at TOA


Measurement Definition*: Level-1 product. Spectral range 0.2-200 mm. Resolving power l/∆l = 1000. Accuracy quoted as SNR (Signal-to-Noise-Ratio), actually SNR-1 so that smaller figure means better performance, as usual. WMO and IOCCG quote accuracy in [ % ]
InstrumentStatus/
Accuracy
Instrument DescriptionMeasurement TechnologyTimeline
MSI (Sentinel-2)
Multi-Spectral Instrument (Sentinel-2)
Operational
Optical high spatial resolution imagery over land and coastal areas for GMES operational services.n/a
HSI
HyperSpectral Instrument
Being developed
Pushbroom-type grating Imaging Spectrometer with high Signal-to-noise Ratio and data uniformity to derive quantitative surface characteristics supporting the monitoring, implementation and improvement of a range of policies in the domain of raw materials, agriculture, soils, food security, biodiversity, environmental degradation and hazards, inland and coastal waters, snow, forestry and the urban environmentn/a
Libera
Being developed
5-year design mission. The mission focuses on understanding the flow of energy out of the planet and how it changes over time.n/a
* Description adapted from WMO.