Upwelling (Outgoing) Long-Wave Radiation At Earth Surface
Measurement Instruments
Measurements > Atmosphere > Radiation budget > Upwelling (Outgoing) long-wave radiation at Earth surface
Measurement Definition: Flux of thermal radiation from the Earth’s surface - Physical unit: [ W/m2 ] - Accuracy unit: [ W/m2 ].
| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
| AIRS | Operational | High spectral resolution measurement of temperature and humidity profiles in the atmosphere. Long-wave Earth surface emissivity. Cloud diagnostics. Trace gas profiles. Surface temperatures. | n/a | |
| 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 | |
| Imager (INSAT 3D) | Operational | Cloud cover, severe storm warnings/monitoring day and night (type, amount, storm features), atmospheric radiance winds, atmospheric stability rainfall. | Multi-purpose imaging Vis/IR radiometer | |
| NISTAR | Operational | Measure the energy emitted and reflected by the Earth. | 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 | |
| HIS | 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 | 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 | |