Upwelling (Outgoing) Spectral Radiance At Toa
Measurement Instruments
Measurements > Atmosphere > Radiation budget > Upwelling (Outgoing) spectral radiance at TOA
Measurement Definition: Level-1 product. Spectral range 0.2-200 mm. Resolving power l/∆l = 1000. Accuracy quoted as SNR (Signal-to-Noise-Ratio), actually SNR-1 so that smaller figure means better performance, as usual. WMO and IOCCG quote accuracy in [ % ]
| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
| IASI | Operational | Measures tropospheric moisture and temperature, column integrated contents of ozone, carbon monoxide, methane, nitrous oxide and other minor gases which affect tropospheric chemistry. Also measures sea surface and land temperature. | n/a | |
| MSI (Sentinel-2) | Operational | Optical high spatial resolution imagery over land and coastal areas for Copernicus operational services. | n/a | |
| AMSI | Being developed | Optical high spatial resolution imagery over land and coastal areas for Copernicus operational services. | n/a | |
| FEI | Being developed | Provide images in a narrow spectral band centered at 10.5µm. | n/a | |
| 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 | |
| IASI-NG | Being developed | Measures profiles of atmospheric temperature, humidity, ozone, carbon monoxide, columns of methane, nitrous oxide, and other minor gases, and sea, ice, and land surface temperature and emissivity. Provides information on aeorols and cloud: fractional coverage, phase, cloud top height (input to Polar AMVs) and particle size. Prime applications: NWP, AC/AQ, climate. Secondary applications: NWC, land/ocean surface monitoring. IASI-NG will resume IASI role as internationl standard for satellite inter-calibration (GSICS). | n/a | |
| IRS | Being developed | Measurements of vertically resolved clear sky atmospheric motion vectors, temperature and water vapour profiles. | 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 | |
| SWIRSAT Imager | Being developed | High spatial resolution multispectral imagery in the short-wave infrared (SWIR) region for global monitoring of GHG concentrations, specifically CO2 and CH4. | n/a | |