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The Imaging IR Limb Sounder (IRLS) is one of the two instruments planned on board of the candidate Earth Explorer Core Mission PREMIER. PREMIER stands for PRocess Exploration through Measurements of Infrared and Millimetre-wave Emitted Radiation. PREMIER went recently through the process of a feasibility study (Phase A) within the Earth Observation Envelope Program. Emerging from recent advanced instrument technologies IRLS shall, next to a millimetre-wave limb sounder (called STEAMR), explore the benefits of three-dimensional limb sounding with embedded cloud imaging capability. Such 3D imaging technology is expected to open a new era of limb sounding that will allow detailed studies of the link between atmospheric composition and climate, since it will map simultaneously fields of temperature and many trace gases in the mid/upper troposphere and stratosphere across a large vertical and horizontal field of view and with high vertical and horizontal resolution. PREMIER shall fly in a tandem formation looking backwards to METOP’s swath and thereby improve meteorological and environmental analyses.
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Stefan Kraft, Jean-Loup Bézy, Roland Meynart, Jörg Langen, Bernardo Carnicero Dominguez, Paolo Bensi, Pierluigi Silvestrin, "Premier’s imaging IR limb sounder," Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 105641T (20 November 2017); https://doi.org/10.1117/12.2309084