Studied Physics at the Physics Dept. of the Aristotle Univ. of Thessaloniki and received his degree in 1994. Had his M.Sc. at the field of "Environmental Physics" in 1996 at the same department and commenced with his Ph.D. Thesis in the field of Atmospheric solar radiation "Advances and applications of solar UV spectroradiometric measurements" obtaining his diploma in 2000. Worked as Post Doctoral fellow at the Laboratory of Atmospheric Physics (2001-2008) working in various EU projects (SUVDAMA, EDUCE, ADMIRA, INSPECTRO, QASUME, SCOUT, e.t.c.) and was involved with solar radiation, aerosol measurement and satellite research. Also, he worked at the Finnish Meteorological Institute, (Climate Change Unit), Finland (2008-2009) as a Marie Curie post-doc IEF Fellow on Satellite measurements of UV radiation and aerosol optical properties and employed at the National Observatory of Athens in 2009 as Associate Researcher. He has published more than 60 articles as a first author or co-author in peer reviewed journals and more than 80 articles in conference proceedings. He has received the Greek State post doctoral fellowship (2002), the Aristotle University post-doc fellowship on aerosol research (2008) and two Marie Curie EU fellowships grants (IEF 2008-2009 and European Return Grant 2010-2013). Research Interests: Solar radiation measurements' effects and applications, Research on aerosol optical properties, Stratospheric ozone research, Satellite remote sensing, Solar Energy Applications

Stylianos Kazadzis (SK) has 15 years of experience on basic and applied research on Atmospheric Physics and Atmospheric Chemistry. From 1989 – 2000 he has studied (Ba in Physics, MSc in Environmental Pysics and PhD in Atmospheric Physics) at the Physics Department, Laboratory of Atmospheric Physics, Aristotle University of Thessaloniki (LAP‐AUTH), Greece. From 2000‐2007 he has been working as a Post‐doc re‐ searcher at the LAP‐AUTH, the Geology Department of the National and Kapodestrian University of Athens and as a visitor Researcher the European Joint Research Center at Ispra, Italy. From 2007‐2009 he has received the EU‐Marie Curie post doctoral (IEF) scholarship and worked at the Remote Sensing Group/Cli‐ mate Change Unit of the Finnish Meteorological Institute, Helsinki, Finland. In 2009 he received the posi‐ tion of the Associate Researcher at the Institute of Environmental Research and Sustainable Development of the National Observatory of Athens, Greece and he has received a Europea