Upward Short-Wave Irradiance At Toa
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
| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
| AMI | Operational | Continuous monitoring capability for the near real-time generation of high-resolution meteorological products and long-term change analysis of land/sea surface temperature and cloud coverage. | Multi-purpose imaging Vis/IR radiometer | |
| CERES | 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 | Operational | Measures Earth radiation gains and losses on regional, zonal and global scales. | n/a | |
| ERM-2 | Operational | Measures Earth radiation gains and losses on regional, zonal and global scales. | n/a | |
| GERB | 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 | 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 | 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 | |
| SIM-2 | Operational | Solar irradiance monitoring. | n/a | |
| VIIRS | 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 | 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) | Approved | Top of the atmosphere radiances and radiative flux. | n/a | |