Sensitivity analysis and parameter tuning of a sea-ice model.

• Main Authors: Kim, J. G., Hovland, P. D.
• Other Authors: United States. Department of Energy.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Argonne National Laboratory 2000
• Subjects: Tuning; Sensitivity Analysis; Accuracy; Sensitivity; Simulation; Optimization; 54 Environmental Sciences; Climate Models; Algorithms; Sea ice
• Online Access: http://digital.library.unt.edu/ark:/67531/metadc725467/

The values of many of the parameters in climate models are often not known with any great precision. We describe the use of automatic differentiation to examine the sensitivity of an uncoupled dynamic-thermodynamic sea-ice model to various parameters. We also illustrate the effectiveness of using these sensitivity derivatives with an optimization algorithm to tune the parameters to maximize the agreement between simulated results and observational data.