July 2008

Viewpoint

Climate change and computer models

Apparently some of the climate scientists that are claiming the earth is going through a period of climate change/global warming caused primarily by human activity (mostly burning fossil fuels that pu..

Kane, L., Hydrocarbon Processing Staff

Apparently some of the climate scientists that are claiming the earth is going through a period of climate change/global warming caused primarily by human activity (mostly burning fossil fuels that put CO2 into the atmosphere) overestimate the accuracy of climate computer model predictions. Chaotic systems are very difficult to model with reasonable accuracy. Obviously models of complex systems with many interacting variables are less accurate than models of simpler systems. For example, multivariable predictive control applied to a single process unit provides much more accurate predictions of future process operation than an overall real-time plant optimization model because considerably

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