Lucien Wald received the M.S. degree in theoretical physics in Marseille and Paris, France, in 1977, the Ph.D. degree from the University UPMC, Paris, in 1980, and the Doctorat d'Etat ès Sciences on the applications of remote sensing to oceanography from the University in Toulon, France, in 1985. Since 1991, he has been a Professor at the MINES ParisTech. He created a research team and was its head till 2007. He was responsible of PhD studies in energy from 2005 to 2012. He retired in 2018. Lucien Wald contributed to the birth and progress of Earth observation. He has been very active within the European association of remote sensing laboratories (EARSeL) from 1980 to 2009, and then within the European Meteorological Society (EMS). His activities in data science were rewarded in 1996 with the famous French Blondel Medal. He was the recipient of the Autometrics Award in 1998 and the Erdas Award in 2001 from the American Society for Photogrammetry and Remote Sensing for articles on data fusion. His other research activities focused mainly on geosciences: oceanography, meteorology and solar radiation. His scientific publications cover Earth observation, marine, terrestrial and urban environments, air pollution, meteorology, solar radiation and its effects on human health. Lucien Wald on Publons. [...] Lucien Wald on Google citations. [...]

The Definition of Time and Different Time Systems, The Course of the Sun over an Observer on the Ground, Solar Radiation Incident at the Top of the Atmosphere, Radiative Transfer in the Atmosphere, Ground Reflection, Solar Radiation Received at Ground Level, Spectral Distribution of the Solar Radiation at Ground, Variability - Implications for Estimating Radiation, Ground-Based Instruments for Measuring Solar Radiation at Ground, Other Means for Estimating Solar Radiation at Surface, Control of the Plausibility of Measurements, Visual and Automated Procedures.