Exploring the Utility of Metrics for the Evaluation of Climate Models
Primary Author: Gleckler, Peter Additional Authors: Karl Taylor
Exploring the Utility of Metrics for the Evaluation of Climate Models
P. J. Gleckler and K.E. Taylor
In this poster we expand upon some of the key points made earlier the week (oral presentation, Taylor and Gleckler, "Uses of metrics in the evaluation and application of climate models"). Here we compute metrics for the tropics and extra-tropics separately, and address caveats such as how results can depend on the choice of the reference data-set. In addition to mean climate metrics, we explore basic measures of large-scale inter-annual variability, and then relate the two. Via example, we argue that indicies intending to summarize overall model performance leave out important information, should be application dependent, and should be used cautiously. We further argue that the development of a hierachy of metrics may be a more useful approach toward comprehensive model evaluation than trying to quantify model performance with a single scalar.
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