In a rural landscape approximately an hour due south of Amsterdam, an open-air laboratory is tuning into the atmospheric frequencies of nature. Separating the signal of climate change from the noise of cyclical variability. Since 1970 the Cabauw Experimental Site for Atmospheric Research has been measuring and monitoring the changes taking place in the feedback loops between land surface processes and the airborne dynamics of our planet. Studying the ways in which the complex behaviour of clouds, aerosols, radiation, precipitation, and turbulence interact with terrestrial events.