Varotsos CA, Tzanis CG, Sarlis NV. Technical note: On the progress of the 2015-2016 El Niño event. Atmospheric Chemistry and Physics Discussions [Internet]. 2015;15:35787-35797. Website

Christodoulakis J, Varotsos C, Cracknell AP, Tzanis C, Neofytos A. An assessment of the stray light in 25 years of Dobson total ozone data at Athens, Greece. Atmospheric Measurement Techniques [Internet]. 2015;8:3037-3046. Website

Varotsos CA, Lovejoy S, Sarlis NV, Tzanis CG, Efstathiou MN. On the scaling of the solar incident flux. Atmospheric Chemistry and Physics [Internet]. 2015;15:7301-7306. Website

Varotsos C, Tzanis C, Efstathiou M, Deligiorgi D. Tempting long-memory in the historic surface ozone concentrations at Athens, Greece. Atmospheric Pollution Research [Internet]. 2015;6:1055-1057. Website