The optical payload of second-generation METEOSAT and its promise to the users (emphasis on oceanography)

Abstract

Abstract MBB and subcontractors have conceived both of the main optical payload elements for the second-generation METEOSAT (i.e. the imaging radiometer and the infrared sounder) in studies performed under ESA/ESTEC contracts. The latter represents a new instrument type onboard METEOSAT and is dedicated to vertical temperature (CO2 bands) and water vapour soundings. The optical, opto-mechanical and overall concepts for both instruments as defined by the MBB team are described here. Emphasis is placed on the outline of the new features of both instruments in terms of higher spatial and radiometric resolution, number of spectral channels and repetition rates, and their benefits for all users of METEOSAT. Also, the impact of these optical payload elements on the satellite and ground segment, in particular the user stations, is discussed.