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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.

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.

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

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