THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
Measurements > Atmosphere >
Radiation budget >
Upward short-wave irradiance 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 ]

Thematic Links
InstrumentStatus/
Accuracy
Instrument DescriptionMeasurement TechnologyTimeline
Advanced MI
Advanced Meteorological Imager
Operational
Continuous monitoring capability for the near real-time generation of high-resolution meteorological products and long-term change analysis of sea surface temperature and cloud coverage.Multi-purpose imaging Vis/IR radiometer
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
ERM-2
Improved 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
CLARREO Pathfinder Reflected Solar
CLARREO Pathfinder - RS
Being developed
+/-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
BBR (EarthCARE)
BroadBand Radiometer (EarthCARE)
Approved
Top of the atmosphere radiances and radiative flux.n/a
* Description adapted from WMO.
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