Vasileios Tzallas is a Postdoctoral Researcher at the National Observatory of Athens (NOA), specialising in atmospheric remote sensing, cloud properties, and the validation of satellite-derived climate data records.
Vasileios studied Mathematics at the University of Ioannina, graduating in 2016, before completing an MSc in Atmospheric Sciences and Environment — with a focus on Climatology and Meteorology — also at the University of Ioannina in 2019. During his MSc he completed an internship in R&D satellite observation at the Royal Netherlands Meteorological Institute (KNMI). He then joined the Leibniz Institute for Tropospheric Research (TROPOS) in Leipzig, where he earned his PhD in Meteorology in 2023. After completing his PhD, he served as a Research Fellow at the European Space Agency (ESA-ESRIN) in Frascati, Italy, contributing to the development of products, algorithms, and calibration/validation activities for the EarthCARE mission — ESA’s Earth Cloud, Aerosol and Radiation Explorer satellite. His published research spans cloud regime datasets, intercomparisons of satellite cloud data records such as CLARA-A2, ISCCP-H and CLAAS-2.1, and their evaluation.

RID: GGA-2438-2022

Atmospheric remote sensing, cloud classification, cloud properties, calibration / validation, satellite climate data records