Works at Swedish Institute of Space Physics (IRF), Kiruna, Sweden, mainly with low-light spectroscopic imaging of aurora and related phenomenae. PI for ALIS (Auroral Large Imaging System, 1993-2019) and its successor ALIS_4D 2020-. ALIS_4D is a collaborative project between IRF and Umeå University. Overlapping fields of view enables reconstruction of the 3D volume emission with high spatial and temporal resolution by the use of tomography-like methods.
Head of IRF Observatory (long-time monitoring measurements by All-sky cameras, Magnetometers, Riometers, Ionosondes, Infrasound microphones and atmospheric trace-gas measurements) with up to 60 years long time-series.
Main scientific achievement: Developement, design and operation of the Auroral Large Imaging System (ALIS) 1990–present. Highlights from ALIS include: First unambiguous observation of radio-induced optical emissions at high latitudes (1999); observation of water in Leonid meteor trails (2002); first unambigous observation of radio-induced optical emissions in N 2 + at 4278 Å (2002); first observation of optical effects duringr X-mode HF-pumping (2012). Scientific interests: Ionospheric modification experiments, Auroral morphology and dynamics. Scaling of auroral phenomena.
Experiences: Low-light imaging, detector technologies (CCD, ICCD, EMCCD), programming (C, assembler, php, etc.) and electronics. Responsible for European intercalibration of low-light standards (annual workshops) as well as for ALIS absolute calibration and data validation.