The Nobel Prize in Physics 2021 was awarded to the German scientist Klaus Hasselmann, along with Syukuro Manabe (USA) Giorgio Parisi (Italy). Klaus Hasselmann developed a model showing the connection between weather and climate, e.g. relating precipitation to long-term effects such as ocean currents.
By this, he demonstrated that climate models can deliver reliable predictions despite short-term weather fluctuations, proving also the connection of increase in CO2 concentration in the atmosphere and global warming. Klaus Hasselmann completed his doctoral thesis at the Max Planck Institute for Dynamics and Self-Organization (MPIDS) in 1957 before he continued his scientific career at the Max Planck Institute for Meteorology in Hamburg.