Daisy World Simulations with NetLogoby Ralph Abraham and the Visual Math Institute
Daisy World #1This is a model based on Watson and Lovelock (black and white daisies), 1983. Our model of 2000 built in Tcl, and older language, is here translated into NetLogo 4.0.2, using its built-in system dynamics editor. If you are interested in this approach, you might download the NetLogo 4.0.2 system, and run our model.
Notes for this model may be found HERE, as well as within the applet and the model.
Daisy World #2In this model due to James Lovelock and Lee Kump (Nature, 1993) humans pump up atmospheric CO2 (we ignore methane) and thus temperature, while the algal ecosystem in the oceans and the land-plants on land pump it down again. Lovelock and Kump (1993) presented simulatiion results but not the model, the details of which seem to have been lost. We propose to reconstruct this model as a NetLogo System Dynamics model.
Revised 01 January 2008 by Ralph