THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
Measurements > Atmosphere >
Radiation budget >
Upwelling (Outgoing) short-wave radiation at TOA


Measurement Definition*: Flux of the terrestrial radiation in the range 0.2-4 µm (reflected solar radiation) moving to Space through the top of the atmosphere - Physical unit: [ W/m2 ] - Accuracy unit: [ W/m2 ].
InstrumentStatus/
Accuracy
Instrument DescriptionMeasurement TechnologyTimeline
CERES
Cloud and the Earth's Radiant Energy System
Operational
Long term measurement of the Earth's radiation budget and atmospheric radiation from the top of the atmosphere to the surface; provision of an accurate and self-consistent cloud and radiation database.n/a
ERM-1
Earth Radiation Measurement
Operational
Measures Earth radiation gains and losses on regional, zonal and global scales.n/a
GERB
Geostationary Earth Radiation Budget
Operational
Measures long and short wave radiation emitted and reflected from the Earth's surface, clouds and top of atmosphere. Full Earth disk, all channels in 5 minutes.n/a
GOME-2
Global Ozone Monitoring Experiment - 2
Operational
Measurement of total column amounts and stratospheric and tropospheric profiles of ozone. Also amounts of H20, NO2, OClO, BrO, SO2 and HCHO.n/a
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
ScaRaB
Scanner for Earth's Radiation Budget
Operational
Measures top-of-atmosphere shortwave radiation (0.2 - 4.0 µm) and total radiation (0.2 - 50 µm). Two additional narrow-band channels (0.5 - 0.7 µm and 11 - 12 µm) allow cloud detection and scene identification.n/a
SIM
Solar Irradiation Monitor
Operational
Solar irradiance monitoring.n/a
SIM-2
Solar Irradiation Monitor-2
Operational
Solar irradiance monitoring.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.Multi-purpose imaging Vis/IR radiometer
BBR (EarthCARE)
BroadBand Radiometer (EarthCARE)
Approved
Top of the atmosphere radiances and radiative flux.n/a
ERM-2
Improved Earth Radiation Measurement
Approved
Measures Earth radiation gains and losses on regional, zonal and global scales.n/a
CLARREO Pathfinder Reflected Solar
CLARREO Pathfinder - RS
Proposed
+/-0.3 %
Demonstration of high accuracy SI-traceable calibration within 350-2300 nm spectral range; demonstration of ability to transfer this calibration to other Earth observing instruments.Multi-purpose imaging Vis/IR radiometer
* Description adapted from WMO.
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