MET Stat Component

The MET Stat component of VCasT is designed to process and analyze .stat output files generated by the Model Evaluation Tools (MET) . These files contain verification statistics from meteorological models and observations.

VCasT simplifies the post-processing of .stat files by allowing users to:

• Filter data by date, forecast lead time, model, variable, thresholds, and more.

• Extract relevant verification metrics (e.g., RMSE, bias, GSS, FSS, CSI).

• Aggregate results across leads or other dimensions.

• Generate output files for plotting or further statistical analysis.

The filtering and processing behavior is controlled via a YAML configuration file. For a complete description of this file, see: MET Stat YAML Configuration

This component is especially useful for batch verification pipelines where multiple .stat files are produced across different models, thresholds, or initialization times.

Note

Only .stat files with a consistent MET format are supported. Files should reside in a single directory as defined in the configuration file.

• MET Stat YAML Configuration
• MET Stat Use Case: Categorical Scores
• MET Stat Use Case: FBIAS Across Models
• MET Stat Use Case: Fractions Skill Score (FSS)
• MET Stat Use Case: Performance Diagram
• MET Stat Use Case: Reliability Diagram
• MET Stat Use Case: Spread–Skill Relationship