Director & senior scientist
Physics
Physikalisch-Meteorologisches Observatorium Davos World Radiation Center
Switzerland
Present he is a director, senior scientist & professor in Physikalisch-Meteorologisches Observatorium Davos World Radiation Center. He done his Ph.D. student at the Institute of Astronomy, ETH Zürich, Ph.D. in astrophysics, Professor Adjunct at ETH Zürich.
Sun as a star; Sun-Earth relation; Space weather and climate; Space-based solar irradiance measurements; Massive stars, Stellar evolution, mass loss, and abundances; Star bursts and supernovae