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10 - Tuning Climate

A Comedy of Compensating Errors

from Part II - The Present

Published online by Cambridge University Press:  02 November 2021

R. Saravanan
Affiliation:
Texas A & M University
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Summary

The Leaning Tower of Pisa, used by Galileo to demonstrate the simplicity of science, is also a testament to the complexity of science. Over an 800-year period, multiple attempts were made to fix the errors in the tower’s construction that caused it to lean. Often, the fixes had unanticipated consequences, necessitating additional compensating fixes. Climate models face a similar problem. The models use approximate formulas called parameterizations, with adjustable parameters, to represent processes like clouds that are too fine to be resolved by the model grids. The optimal values of these parameters that minimize simulation errors are determined by a trial-and-error process known as “model tuning.” Tuning minimizes errors in simulating current and past climates, but it cannot guarantee that the predictions of the future will be free of errors. This means that models can be confirmed, but they cannot be proven to be correct.

Type
Chapter
Information
The Climate Demon
Past, Present, and Future of Climate Prediction
, pp. 157 - 165
Publisher: Cambridge University Press
Print publication year: 2021

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  • Tuning Climate
  • R. Saravanan, Texas A & M University
  • Book: The Climate Demon
  • Online publication: 02 November 2021
  • Chapter DOI: https://doi.org/10.1017/9781009039604.014
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To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

  • Tuning Climate
  • R. Saravanan, Texas A & M University
  • Book: The Climate Demon
  • Online publication: 02 November 2021
  • Chapter DOI: https://doi.org/10.1017/9781009039604.014
Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Tuning Climate
  • R. Saravanan, Texas A & M University
  • Book: The Climate Demon
  • Online publication: 02 November 2021
  • Chapter DOI: https://doi.org/10.1017/9781009039604.014
Available formats
×