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Data access

  1. Data portal
    The simplest way how to get rather smaller ad hoc data samples (approximately up-to 20 000 retrieved fields per request)  
  2. Batch access
    The ECMWF access in batch should be used for most common types of work (big data samples retrievals)
  3. CMA data portal
    2nd official TIGGE data portal where all data from all partners can be downloaded. The data on both official portals hosted at ECMWF and CMA is synchronized via LDM.

Data  monitoring

  1. Visual data quality monitoring
    For the purpose of simple visual data quality monitoring some maps and histograms are produced for every forecast date and chosen model outputs (see the link in the Resources section). Only the first perturbed eps member and control forecast (if exists) are monitored at two chosen forecast leading times (0 and the latest available one common for all monitored datasets)
  2. History page
    The data gaps caused by any kind of problems can be checked via so called TIGGE-LAM history web page linked in the Resources section.

GRIB2 and NETCDF conversion

  • GRIB_API
    ECMWF has developed a C GRIB API for encoding, decoding and data manipulation in GRIB-2 format. All TIGGE parameters should be recognized through GRIB_API.
  • grib2_to_netcdf
    grib2_to_netcdf is an NCAR  conversion utility built on the ECMWF GRIB_API and Unidata NetCDF libraries. The utility converts regular lat/lon gridded TIGGE data from GRIB-2 to NetCDF format.

Other External tools

  • TIGGE Museum
    The museum includes a set of scripts to download TIGGE data, and plot it (using GrADS ) in file TIGGE_sample.tar.gz - available directly from here.
  • Cyclone XML tools
    Tools for use with Cyclone XML data are available from the CAWCR CXML website.
  • NCAR Tools
    • NCL
      The NCAR Command Language (NCL) is a free interpreted language designed specifically for scientific data processing and visualization. NCL has robust file input and output with support for NetCDF, HDF, GRIB-1 and GRIB-2 file formats, including support for all published TIGGE GRIB-2 parameters.
      NCL is provided with a couple of useful command line tools:
      • ncl_filedump - prints the contents of supported files in a netCDF-like view.
      • ncl_convert2nc - converts one or more files in any of the supported formats to netCDF formatted files.

    • PyNGL and PyNIO

      PyNGL and PyNIO provide a Python interface to most of the NCL tools and its functionality, with an emphasis on high quality 2D visualizations. PyNIO, in particular supports TIGGE GRIB-2 with the functionality provided by NCL.

    • MET
      Model EvaluationTools (MET) is a suite of software utilities designed by NCAR Developmental Testbed Center (DTC) to the provide the capability to validate model forecasts using observational data.

  • NOAA Tools
    • NCEP tools for GRIB-2
      National Centers for Environmental Prediction (NCEP) provides a generalized set of codes for encoding, decoding and data manipulation in GRIB-2 format. Many TIGGE parameters will not be recognized using's NCEP's GRIB-2 table definitions.
    • wgrib2
      Climate Prediction Center (CPC) provides a tool (wgrib2) for examining and manipulating GRIB-2 files. Many TIGGE parameters will not be recognized using wgrib2. A mofified version of wgrib2 designed to read all TIGGE parameters can be downloaded here: tiggewgrib2.tar (only tested on Sun OS 2.10, and Linux).
    • ncBrowse
      ncBrowse is a GUI based tool that can be used to visualize TIGGE NetCDF data.
  • Unidata tools
    • GEMPAK provides functionality for analysis of GRIB-2 data.
    • GRIB Java Decoder provides file manipulation functionality.
    • Unidata IDV is a GUI based tool that can be used to visualize both NetCDF and GRIB-2 data.

  • NASA tool: 

    • Panoply is a GUI based tool that can be used to visualize TIGGE NetCDF data and easily compute/plot zonal averages.

Algorithms for TIGGE diagnostics

Zoltan Toth offers Fortran examples of CAPE and CIN computations performed at NCEP:

 

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