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Proceedings Paper • Open Access

NanoCarb part 2: performance assessment for total column CO2 monitoring from a nano-satellite
Author(s): Silvère Gousset; Laurence Croizé; Etienne Le Coarer; Yann Ferrec; Laure Brooker

Paper Abstract

NanoCarb is an innovative Fourier Transform imaging spectrometer dedicated to the measurement of CO2 and CH4. Both its unusual optical principle and sampling strategy allows to reach a compact design, ideal for small satellite constellation as investigated by the European project SCARBO. The NanoCarb performance assessment as well as a proof of concept are required in this framework. A strategy of design is developed to optimize the performances and reach the sensitivity target of the space mission, demonstrating the potential of the concept without drastic complexity gain. A preliminary bias mitigation in the retrieval strategy is presented concerning water for CO2 measurement, illustrating the efficiency and the flexibility of the NanoCarb partial interferogram sampling technic. The presented design reaches a random error sub-ppm for CO2 and sub-10ppb for CH4, considering a 128 to 192 km swath, respectively, for 2 or 3 km of resolution at ground. A full mitigation of the water bias is performed on CO2 band thanks to partial interferograms.

Paper Details

Date Published: 12 July 2019
PDF: 15 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111803Q (12 July 2019); doi: 10.1117/12.2536053
Show Author Affiliations
Silvère Gousset, Institut de Planétologie et d’Astrophysique de Grenoble (France)
Laurence Croizé, ONERA (France)
Etienne Le Coarer, Institut de Planétologie et d’Astrophysique de Grenoble (France)
Yann Ferrec, ONERA (France)
Laure Brooker, Airbus Defence and Space (France)

Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

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