Daisy World is a very simple model of a system with external forcing (“solar luminosity”) and feedbacks (white and black daisies). Solar luminosity increases with time, and the system tries

Daisy World is a very simple model of a system with external forcing  (“solar luminosity”) and feedbacks (white and black daisies). Solar luminosity increases with time, and the system tries to keep  the temperature from rising (“stable climate”) by changing the area  covered by white and black daisies. White daisies prefer warmer  temperatures and have high albedo, black daisies prefer colder  temperatures and have low albedo. See notes for the “Climate Feedbacks”  lecture and online description at  http://gingerbooth.com/flash/daisyball/ for more details. For this assignment, use the online model at  http://gingerbooth.com/flash/daisyball/DaisyBall.html. An example of a  “climate simulation” is in the below. On the left of this figure, you see two graphs: (top plot) area taken by white (white line) and black (black line) daisies, and area that is taken by bare land (brown line); (bottom plot) temperature of the Daisy World: actual temperature  (purple) and temperature this planet would have if there were no daisies  (brown). As the time passes, the solar luminosity increases in both plots.

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