![]() They will collectively and continuously measure at a wavelength of 777.4 nm with a very narrow bandwidth and a spatial resolution of 4.5 km at nadir, which will be triggered by optical pulses above a threshold that are initiated by lightning. LI consists of four identical optical telescopes. FCI will also operate in a ‘high spatial resolution fast imagery mode’ which can zoom in on smaller areas and deliver data images of selected regions every 2.5 minutes, but for a tradeoff spatial resolution of 500 m. ![]() FCI will operate at wavelengths between 0.3 - 13.3 μm, will have a spatial resolution of 1-2 km, and will be able to scan the full Earth disc in 10 minutes. Performance SpecificationsįCI will observe 16 channels in the visible and infrared spectrum, of which eight are placed in the solar spectral domain between 0.4 - 2.2 μm. This will allow measurement within the free troposphere, leading to information on enhanced levels of pollution in the boundary layer below. IRS includes the ozone band within the Long-Wave Infrared (LWIR) and the carbon monoxide band within Medium-Wave Infrared (MWIR). IRS is a hyperspectral infrared sounder set to revolutionise weather forecasting by tracking the 3D structure of atmospheric water vapour and temperature for the first time on an operational basis. LI can detect all types of lightning: cloud to cloud, cloud to ground, and intra-cloud flashes, providing an advantage over ground based lightning detection networks. The presence of lightning is a clear sign of atmospheric turbulence, which can be associated with extreme weather events. LI provides real-time data on the location and intensity of lightning flashes, to enable more precise forecasts of severe thunderstorms. The additional channels on FCI will improve the detection of thin cirrus clouds, aerosols, and localised fire events. It offers significant enhancement in detection capabilities with respect to radiometric, spectral and spatial resolution over its predecessor, the Spinning Enhanced Visible and Infrared Imager (SEVIRI), resulting in improved forecasts and earlier prediction of severe weather events. FCI is an optical imager that covers the visible, near-infrared and infrared spectrum with 16 channels. The MTG-I satellites will accommodate the Flexible Combined Imager (FCI) and Lightning Imager (LI), whilst the MTG-S satellites will carry an Infrared Sounder (IRS) and a Ultraviolet Visible Near-infrared (UVN) Souder. Meteosat Third Generation (Image credit: ESA) See MTG (Meteosat Third Generation) summary Lightning sensors, Atmospheric temperature and humidity sounders, Imaging multi-spectral radiometers (vis/IR), Atmospheric chemistry Wind profile (horizontal), Cloud top temperature, Cloud optical depth, Normalized Differential Vegetation Index (NDVI), Aerosol optical depth (column/profile), Cloud drop effective radius, Precipitation intensity at the surface (liquid or solid), Cloud type, Volcanic ash, Cloud imagery, Aerosol Extinction / Backscatter (column/profile), Atmospheric specific humidity (column/profile), O3 Mole Fraction, NO2 Mole Fraction, Fire fractional cover, Total lightning density, Land surface temperature, Cloud top height, Short-wave Earth surface bi-directional reflectance, Vegetation type, Atmospheric temperature (column/profile), CH4 Mole Fraction, Sea surface temperature, CO Mole Fraction, Aerosol absorption optical depth (column/profile), Downward long-wave irradiance at Earth surface, Sea-ice cover, Cloud cover, Snow cover, Sea-ice surface temperature, HCHO Mole Fraction, Atmospheric stability index Atmospheric Winds, Aerosols, Snow cover, edge and depth, Vegetation, Radiation budget, Lightning Detection, Atmospheric Humidity Fields, Cloud type, amount and cloud top temperature, Atmospheric Temperature Fields, Surface temperature (ocean), Liquid water and precipitation rate, Cloud particle properties and profile, Surface temperature (land), Ozone, Multi-purpose imagery (land), Sea ice cover, edge and thickness, Trace gases (excluding ozone)
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