Model Evaluation Tools (MET) | Documentation

Tutorial Presentations

MET Related White Papers

  • Gilleland, E., 2021. Spatial dissimilarity measures for comparing spatial fields (OpenSky Citable URL,
  • Bullock, R., et. al., 2016: Method for Object-Based Diagnostic Evaluation NCAR Technical Note NCAR/TN-532+STR, 84pp.
    Detailed examination of the internal workings of MODE.
  • Harrold, M., 2011: Comparison of the NCEP and DTC Verification Software Packages (view pdf file)
    Provides a systematic comparison of the verification results for precipitation and upper-air variables from MET and the NCEP verification software package, on which MET was based.
  • Gilleland, E., 2010: Confidence intervals for forecast verification. NCAR Technical Note NCAR/TN-479+STR, 71pp.
    Discusses in great statistical detail both the parametric and non-parametric confidence intervals applied in MET.
  • Confidence Intervals for forecast verification: Practical Considerationsdiscusses at a higher level the confidence interval methods applied in MET. It is geared toward the typical MET user. (view pdf file)
  • The NetCDF Point Observation Format write-up describes the NetCDF file format used in METv1.0 for the output of the PB2NC tool and input to the Point-Stat tool. Users wishing to reformat their point observations into this intermediate NetCDF point observation format may find this write-up useful.
    • MET version 1.0 NetCDF Point Observation Format
      (view pdf file)
    • MET version 1.1 NetCDF Point Observation Format
      (view pdf file)
  • The Moments, Centroid, and Axis Angles write-up describes how first and higher order moments are used to define several object attributes for the MODE tool. 
    (view pdf file)
  • The Least-Squares Circle Fit write-up describes the method used for computing the center of curvature object attribute for the MODE tool. 
    (view pdf file)
  • The Great Circle Distances and Bearings write-up explains Great Circle arcs which may be used in plotting object polyline outlines for the MODE tool. 
    (view pdf file)
  • The Velocity Vectors write-up explains how map projections transform velocity vectors. 
    (view pdf file)
  • The MODE Areas write-up explains the bug in how MODE was reporting object areas that is resolved in the METv4.1 release. 
    (view pdf file)
  • The PB2NC Virtual Temperature write-up explains the bug in how the PB2NC tool was extracting virtual temperature values instead of sensible temperature that is patched for METv4.0 and METv4.1. 
    (view pdf file)