View source for User:Jmandel/WRF-Fire output to VAPOR conversion

==VAPOR conversion tools==

Most likely, conversion of data from WRF-Fire can be achieved by a short script calling the following command line tools.
 
===WRF to VAPOR===
The '''wrfvdfcreate'''/'''wrf2vdf''' convert '''wrfout''' files to '''.vdf''' format. These are executables not scripts, and controlled by command-line arguments. The conversion should involve computing node height from the [[Wikipedia:Geopotential|geopotential]] to node vertical cartesian coordinates (variable ELEVATION) and the interpolation from staggered wind mesh. Supplied with VAPOR.

Documentation:
* [http://www.vapor.ucar.edu/docs/reference/index.php?id=man/wrf2vdf wrf2vdf man page]
* [http://www.vapor.ucar.edu/docs/reference/index.php?id=man/wrfvdfcreate wrfvdfcreate man page]
* [http://www.vapor.ucar.edu/docs/usage/wrfstart/WRFGetStarted.pdf WRF getting started] 
* [http://www.vapor.ucar.edu/docs/usage/wrfprep/WRFsupport.pdf WRF support manual]

Examples:
* [http://docs.vapor.ucar.edu/tutorials/convert-wrf-output-files-vapor-data-set-vdc with adding a variable]

===NetCDF to VAPOR===
'''ncdf2vdf''' is a more general utility. 

* Is it possible to convert and use data at different resolutions (fire mesh, atmospheric mesh?
* What about staggering of the wind mesh?
* And conversion of geopotential to node height?

Documentation:
* [http://www.vapor.ucar.edu/docs/reference/index.php?id=man/ncdf2vdf man page]

Examples:
* [http://www.mmm.ucar.edu/eulag/WORKSHOP08/S4-T2-Piotrowski/Munich_Piotrowski.pdf conversion of EULAG output] (page 11)

==NetCDF manipulation utilities==
We could use a command line tool to subset '''wrfout''' files to leave only variables of interest so that the smaller file can be transferred more easily. There are several packages of utilities that can be used to build a script to do this. However many are out of date.

* '''ncks''' program in [http://nco.sourceforge.net/ NCO]
* [http://www.unidata.ucar.edu/support/help/MailArchives/netcdf/msg02935.html Unidata help archives]