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Swarm SCARF Dedicated Lithospheric Field Inversion chain

Abstract : The forthcoming Swarm satellite mission is a constellation of three satellites dedicated to the study of the geomagnetic field. The orbital characteristics of the mission, which includes a pair of satellites flying side by side, has prompted new efforts in data processing and modeling. A consortium of several research institutions has been selected by the European Space Agency (ESA) to provide a number of Level-2 data products which will be made available to the scientific community. Within this framework, specific tools have been tailor-made to better recover the lithospheric magnetic field contribution. These tools take advantage of gradient properties measured by the lower pair of Swarm satellites and rely on a regional modeling scheme designed to better detect signatures of small spatial scales. We report on a processing chain specifically designed for the Swarm mission. Using an End-to-End simulation, we show that the tools developed are operational. The chain generates a model that meets the primary scientific objectives of the Swarm mission. We also discuss refinements that could also be implemented during the Swarm operational phase to further improve lithospheric field models and reach unprecedented spatial resolution.
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E. Thébault, G Vigneron, G Maus, G Chulliat, G Sirol, et al.. Swarm SCARF Dedicated Lithospheric Field Inversion chain. Earth Planets and Space, Springer/Terra Scientific Publishing Company, 2013, 65 (11), pp.1257-1270. ⟨10.5047/eps.2013.07.008⟩. ⟨insu-01405081⟩

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