In Mike Mann’s new book, Our Fragile Moment, he does a good job reviewing a number of key concepts in Climate change – among them, the Daisy World hypotheses, that was an early, simplified model of how life on Earth, within limits, can operate to maintain climate stability.
Daisyworld, a computer simulation, is a hypothetical world orbiting a star whose radiant energy is slowly increasing or decreasing. It is meant to mimic important elements of the Earth-Sun system. James Lovelock and Andrew Watson introduced it in a paper published in 1983[1] to illustrate the plausibility of the Gaia hypothesis. In the original 1983 version, Daisyworld is seeded with two varieties of daisy as its only life forms: black daisies and white daisies. White petaled daisies reflect light, while black petaled daisies absorb light. The simulation tracks the two daisy populations and the surface temperature of Daisyworld as the sun’s rays grow more powerful. The surface temperature of Daisyworld remains almost constant over a broad range of solar output.







