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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Dear netcdfgroup,After reading information regarding all of the freely-available software for analyzing netCDF files, from the Unidata website, I am still not sure which strategies are best to perform the following two tasks:
FIRST. Using atmospheric numerical model output (e.g. NAM, formerly Eta) already written to either GRIB or netCDF formatted files, I would like to run command-line software (linux based) that will (1) read/import data from these numerical model GRIB/netCDF formatted files and use this data to (2) calculate parameters such as horizontal divergence of wind and layer-averaged omega, for a particular location (defined by latitude/longitude) -- and output the calculated value to an ASCII file. In other words, I want to compute parameters for a particular location based on available data variables already in the netCDF/GRIB file.
SECOND. I want to run command-line (linux based) software that will allow me to extract data from atmospheric numerical model output already written to netCDF or GRIB files -- at a specific location (defined by latitude/longitude). For example, output from the NAM is written to a Grid with grid spacing of 12-km. I want to be able to extract the _interpolated value_ of a particular variable at a particular latitude/longitude point -- and output the value to an ASCII file.
Any help will be greatly appreciated. Waylon -- *********************************************************************** Waylon G. Collins Voice: (361)289-0959 * * NOAA/National Weather Service E-Mail: Waylon.Collins@xxxxxxxx *
* 300 Pinson Drive * * Corpus Christi, TX 78406 * * USA * **********************************************************************
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