Daisyworld Lab.docx - Key concepts Energy balance equation Radiation Long and short-wave Albedo and reflectivity of surface(short-wave radiation

Daisyworld Lab.docx - Key concepts Energy balance equation...

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Key concepts: Energy balance equation Radiation: Long and short-wave Albedo and reflectivity of surface (short-wave radiation) Equilibrium temperature Background information: The Gaia theory - Daisyworld Daisyworld is an artificial world having a very simple biota which is specifically designed to display the characteristics in which we are interested - namely, close coupling of the biota and the global environment (McGuffie and Henderson-Sellers,1997). This simple (zero-dimensional) computer model is designed to illustrate Lovelock's Gaia Hypothesis, which views the Earth as a living, self-regulating entity. While evolving, life forms on earth modulate their environment (temperature, etc.). This model describes an imaginary planet called Daisyworld (see figure below). Daisyworld is a very simple planet that has only two species of life on its surface – white and black daisies. The planet is assumed to be well-watered, with all rain falling at night so that the days are cloudless. The atmospheric water vapor and CO2 are assumed to remain constant, so that the greenhouse of the planet does not change. The key aspect of Daisyworld is that the two types of daisies have different colors and thus different albedos. In this way, the daisies can alter the temperature of the surface where they are growing.
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Daisyworld Name: Suja Shrestha Date: 04/25/2020 Link to Daisyworld simulation: %20Models/Biology/Daisyworld.nlogo Description of the model : 1. Set the solar luminosity to 1.000 (present conditions). Set the population of daisies to 20% white, 20% black. The albedo the surface should be 0.50, white daisies should be 0.75, and black
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  • Fall '19
  • Equator, Gaia hypothesis, Daisyworld

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