Swarm SCARF Dedicated Ionospheric Field Inversion chain

摘要: The geomagnetic daily variation at mid-to-low latitudes, referred to as the Sq field, is generated by electrical currents within conducting layers of ionosphere on dayside Earth. It enhanced in a narrow equatorial band, due electrojet. upcoming ESA Swarm satellite mission, be launched end 2013, will consist three satellites low-Earth orbit, providing dense spatial and temporal coverage ionospheric field. A Satellite Constellation Application Research Facility (SCARF) has been set up consortium research institutions, aiming producing various level-2 data products during mission. Dedicated Ionospheric Field Inversion (DIFI) chain SCARF algorithm calculating global, spherical harmonic models field quiet times. describes seasonal solar cycle variations, separates primary induced magnetic fields based upon advanced 3D-models mantle conductivity, relies core, lithospheric magnetospheric derived from other algorithms for removing non-ionospheric data. DIFI was thoroughly tested synthetic preparation phase; it now ready used deriving real