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VAPOR is designed to handle WRF output files. To handle ECMWF GRIB output a conversion is required.

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titleInstallation

The binary installation is easiest. On a stand-alone system you need to install expat0 (1.x) and pyparsing.

VAPOR data files

VAPOR input data is described by .vdf (VAPOR data Format) files. These are XML files containing the name and dimension all the variables and the path of the actual data files storing the data values.  VAPOR stores its actual data values in .vdc (VAPOR Data Collection) files. These are NetCDF files containing wavelet compressed 3D data. There is a separate file for each variable and timestep organized into a folder hierarchy.

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