1. Max‐Planck‐Institut für Sonnensystemforschung Göttingen Germany
2. Physikalisch‐Meteorologisches Observatorium Davos, World Radiation Center Davos Switzerland
3. School of Space ResearchKyung Hee University Yongin South Korea
4. Astrophysics Group, Blackett LaboratoryImperial College London London UK
5. Naval Research Laboratory Washington District of Columbia USA