1. Eratosthenes Centre of Excellence, Fragklinou Rousvelt 82, 3012 Limassol, Cyprus
2. Department of Civil Engineering & Geomatics, Cyprus University of Technology, 3036 Limassol, Cyprus
3. Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens (IAASARS/NOA), GR15236 Athens, Greece
4. Research Centre for Atmospheric Physics and Climatology, Academy of Athens, GR11521 Athens, Greece
5. Laboratory of Climatology and Atmospheric Environment, Sector of Geography and Climatology, Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, GR15784 Athens, Greece
6. Physikalisch-Meteorologisches Observatorium Davos, World Radiation Center (PMOD/WRC), 7260 Davos, Switzerland