| CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
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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 [ % ] |
| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
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 environment | n/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 | |
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* Description adapted from WMO.
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