MET Overview

MET Tools

As shown in the diagram below, the MET Verification Package Version 1.0 consists of 7 major components:

  • PCP-Combine Tool (pcp_combine)
  • PB2NC Tool (pb2nc)
  • Method for Object-based Diagnostic Evaluation (MODE) Verification Tool (mode)
  • Grid-Stat Verificaiton Tool (grid_stat)
  • Point-Stat Verification Tool (point_stat)
  • MODE Analysis Tool (mode_analysis)
  • VSDB Analysis Tool (vsdb_analysis)

MET flow chart

Figure 1: MET flow chart for Version 1.0.

PB2NC Tool

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

PCP-Combine Tool

  • Combine accumulated precipitation from multiple files into a single accumulation interval.
  • Write output to intermediate NetCDF format.
  • Optionally run prior to Grid-Stat and MODE Tools.

Point-Stat Verification Tool

  • Compute standard verification scores by comparing a gridded forecast to point observations (output of PB2NC Tool).
  • Write output to ASCII statistics files.

Grid-Stat Verification Tool

  • Compute standard verification scores by comparing a gridded forecast to gridded observations.
  • Write output to ASCII statistics files and write difference fields to NetCDF format.

MODE Verification Tool

  • Apply an object-based verification technique in comparing a gridded forecast to gridded observations.
  • 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 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.