I graduated in Physics from the University of São Paulo and obtained my PhD in Geosciences from WM Rice University in 1981. Between 1972 and 1981 I held the position of associate professor at the University of São Paulo and joined the National Institute for Space Research (INPE) in 1981. My current area of interest is Energy Meteorology. I created and coordinated the Laboratory for Modeling and Studies of Renewable Energy Resources (LABREN), a multidisciplinary laboratory that develops research and teaching with a focus on Energy Transition and the implications due to climate change. I am a professor in the graduate program in Earth System Sciences, where I mentor several master and doctoral students. I was a national delegate of international scientific projects and committees, of which I highlight the following: GEOSS-Energy from NASA; GEWEX-SCAR; UNEP-GEF-SWERA; DAAD-CAPES; BSRN-WMO / GWEX. At the national level, I coordinate the Energy Security subproject of the INCT-Climate Change Program. I was the author and coordinator of the two editions of the Brazilian Atlas of Solar Energy and currently coordinate R&D projects implemented by the National Electric Energy Agency.