Outgoing Longwave Radiation - MTG

Abstract:
Currently, the OLR is currently not operationally derived - the results shown are the outcome of a feasibility study. It is planned to generate an operational product from the Meteosat Third Generation Flexible Combined Imager (MTG-FCI). The Earth Radiation budget is made up of the incoming solar flux and the outgoing Top-of-the-Atmosphere (TOA) radiative fluxes. The outgoing radiative fluxes consist of the reflected part of the incoming solar flux, as well as the thermal flux emitted by the Earth-atmosphere system. The thermal flux is often referred to as Outgoing Longwave Radiation (OLR). The OLR is a very important parameter for the Earth's radiation budget study as well as for weather/climate model validation purposes. Variations in the OLR reflect the response of the Earth-atmosphere system to solar diurnal forcing. Those variations can be found in particular in surface temperature, cloud cover, cloud top height, and related quantities like precipitation. The OLR is therefore well suited for validation of global circulation models (GCMs) simulating the diurnal cycle, as it constitutes the combination of different model aspects. The algorithm required to create this product is available in the Product Guide.