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Assessing Model Skill in Circulation Modeling Systems

Learn about model skill assessment metrics such as Correlation Skill Index, Index of Agreement, Model Bias, Mean Square Error, and more in circulation modeling systems. Explore numerical algorithms and Taylor series expansion for accurate assessment.

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Assessing Model Skill in Circulation Modeling Systems

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  1. Foundations of circulation modeling systems II EBS566: Estuary and Ocean Systems II – Lecture 4, Winter 2010 Instructors: T. Peterson, M. Haygood, A. Baptista Division of Environmental and Biomolecular Systems, Oregon Health & Science University

  2. Numerical algorithms (white board) • Taylor series expansion

  3. Model skill assessment Overview

  4. Model skill assessment: metrics Correlation Skill Index (CSI) corr(obs,mod) / sqrt(var(obs)*var(mod)) Index of Agreement (IOA) IOA = 1 - sum((mod-obs)^2) / sum[(abs(mod-mean(obs))+abs(obs-mean(obs)))^2] Model Bias (MB) MB = (mean(mod)-mean(obs)) / stdev(obs) Mean Square Error (MSE) MSE = mean((mod-obs)^2) Normalized Standard Deviations (NSTD) NSTD = std(mod) / std(obs) Root Mean Square Error (RMSE) RMSE = sqrt(mse) RDFS

  5. Modified Taylor diagram Modified Taylor diagram primer http://www-pcmdi.llnl.gov/about/staff/Taylor/CV/Taylor_diagram_primer.pdf

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