MET Online Tutorial for METv1.1

Introduction: Flow Chart

METv1.1 Flow Chart

The major components of the MET package are represented in the figure below (Fig 1). The main stages represented are data reformatting, statistical analysis, and aggregation. MET Version 1.1 consists of 8 tools:
  • PB2NC Tool
  • ASCII2NC Tool
  • Point-Stat Tool
  • PCP-Combine Tool
  • Grid-Stat Tool
  • Method For Object-Based Diagnositic Evaluation (MODE) Tool
  • VSDB-Analysis Tool
  • MODE-Analysis Tool

METv1.1 flow chart

Figure 1: Flowchart representation of METv1.1 structure. Green areas represent executables, while gray represent data.

PB2NC Tool

  • Stratify the contents of PrepBufr files containing point observations.
  • Write output to intermediate NetCDF format.
  • Optionally run prior to Point-Stat.

ASCII2NC Tool

  • Reformat point observations from ASCII to NetCDF.
  • Optionally run prior to Point-Stat.

PCP-Combine Tool

  • Add, subtract, or sum up precipitation from multiple GRIB files.
  • Write output to intermediate NetCDF format.
  • Optionally run prior to Grid-Stat and MODE tools.

Point-Stat Tool

  • Compute traditional and neighborhood verification scores by comparing a gridded forecast to point observations (output of PB2NC or ASCII2NC tools).
  • Write output to ASCII statistics files.

Grid-Stat Tool

  • Compute traditional and neighborhood verification scores by comparing a gridded forecast to a gridded analysis.
  • Write output to ASCII statistics files and write matched pairs to NetCDF format.

MODE Tool

  • Apply an object-based verification technique in comparing a gridded forecast to a gridded analysis.
  • Write output to ASCII statistics files, write object fields to NetCDF format, and generate a PostScript summary plot.

VSDB-Analysis Tool

  • Compute aggregate verification scores across mulitple cases.
  • Filter contents of VSDB files (output of the Point-Stat and Grid-Stat tools) based upon search parameters.

MODE-Analysis Tool

  • Compute aggregate object-based verification information across mulitple cases.
  • Filter contents of MODE object files based upon search parameters.