AMICal Sat and ATISE: two space missions for auroral monitoring

摘要: A lack of observable quantities renders it generally difficult to confront models Space Weather with experimental data and drastically reduces the forecast accuracy. This is especially true for region Earth’s atmosphere between altitudes 90 km 300 km, which practically inaccessible, except by means remote sensing techniques. For this reason auroral emissions are an interesting proxy physical processes taking place in region. paper describes two future space missions, AMICal Sat ATISE, that will rely on CubeSats observe aurora. These satellites perform measurements order reconstruct deposition particle precipitations regions. ATISE a 12U CubeSat spectrometer imager payloads. The built using micro-Spectrometer-On-a-Chip (μSPOC) technology. It work 370–900 nm wavelength range allow short exposure times around 1 s. have six lines sight. joint miniaturized wide-field based Teledyne-E2V ONYX detector combination large aperture objective. Observation be done at limb enable reconstruction vertical profile emissions. planned launched mid 2021. 2U embed aurora both nadir configurations. measuring profiles emission when observing configuration similar ATISE. map part night side oval resolution few km. Both calibrated photometric precision better than 10% moon as wide-field, stable extended source. Ground-based demonstrators instruments been tested 2017 Norway Svalbard. Even though some issues still need solved, first results very encouraging missions. Data interpretation forward Transsolo code, 1D kinetic code solving Boltzmann equation along local enabling simulation thermospheric ionospheric precipitation input.