| CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
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Measurements > Atmosphere >
Radiation budget >
Upwelling (Outgoing) Short-wave Radiation at the Earth Surface
  | Measurement Definition*: Flux of short-wave radiation from the Earth’s surface - Physical unit: [ W/m2 ] - Accuracy unit: [ W/m2 ]. |
| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
NISTAR
NIST Advanced Radiometer | Operational
| Measure the energy emitted and reflected by the Earth. | n/a | |
CWFMS
Canadian Wildland Fire Monitoring Sensor | Being developed
| Measurements are: Fire Radiative Power (FRP), hotspot locations, rate of spread, burned area mapping. Data products generated: 1) Fire maps, showing location, extent, and timing of forest fire events; 2) Fire characteristics, such as fire line intensity, rate of spread and fuel consumption; 3) Plume dynamics through smoke transport maps and plume heights; 4) Mass of carbon released into atmosphere. | n/a | |
ERS
Earth Radiative Sensor | Being developed
| ERS are sensors based on miniaturized thermopiles (active area of 5 mm × 5 mm, responsivity of ∼ 0.2 μ V per Wm−2 ) designed to measure the heat flux from a 180° field of view angle. | n/a | |
HIS
Hyperspectral imaging Spectrometer | Being developed
| Pushbroom-type dual-prism Imaging Spectrometer with high radiometric accuracy and medium Signal-to-noise Ratio, operating from UV (320 nm) to SWIR (2400 nm) , based on a single MCT Detector/focal plane. The HIS aims at accurate spectral imaging on land and ocean for climatological background radiometric data acquistion and supporting cross-calibration with other stellites/sensors and on PICS/instrumented sites with highest resolution (50 m) | n/a | |
Libera
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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