The geostationary Fourier imaging spectrometer (GEOFIS) as a part of the geostationary tropospheric pollution exporer (GEOTROPE) mission: objectives and capabilities

The Geostationary Fourier Imaging Spectrometer (GeoFIS) is proposed as part of the European Geostationary Tropospheric Pollution Explorer (GeoTroPE) mission. For this mission, two instruments are considered: one covering the thermal infrared region (GeoFIS) and one covering the ultraviolet-visible and near-infrared regions (GeoSCIA). The geostationary orbit (GEO) provides indeed a unique opportunity of monitoring tropospheric pollution and photochemistry on the regional and continental scales. In this paper, the scientific goals and requirements of GeoFIS are described.