He also developed a mathematical model comparing variations in solar radiation across the Earth's surface, which was later used by scientists Wladimir Köppen and Alfred Wegener to deduce past climates over drifting continents.
He also developed a mathematical model. He also was comparing variations in solar radiation across the Earth's surface. The Earth's surface was later used by scientists Wladimir Köppen and Alfred Wegener. This was to deduce past climates over drifting continents.