Arrhenius Made Accurate CO2 Warming Prediction in 1896

In 1896 Svante Arrhenius identified the three key factors needed to forecast CO2-driven warming—that CO2 is a greenhouse gas, that a warmer atmosphere holds more water vapor which amplifies warming, and that added CO2 gradually partitions so about 80% ends up in the oceans—and used them to make a back-of-the-envelope calculation of warming from doubling CO2 that, while not exact, was remarkably close, demonstrating the deep and durable foundation of climate science.