Beyond creating a closed ecological system - that focuses on providing a balanced homeostatic environment - what is the smallest area that could create actual weather events?
If we wanted to engineer a rain fall through simulating the environmental conditions, would the structure need to be the size of a planet and its atmosphere? Can it be achieved in a structure the size of a continent... a state... a sports stadium?
What methods could be used to estimate the minimum size; volume of air, altitude, barometric pressure areas, etc.?
I am trying to understand how to identify a theoretical lower limit of recreating a functional weather system. Not just a simulation of the conditions on a micro scale.