[gradsusr] Interpolating HRRR 15 minute GRIB to 5 minute

[Wesley Ebisuzaki - NOAA Federal]

Brandon,

   One way is to create a grib file with the 5 minutes time intervals
created by
a linear interpolation.  You can do this by fortran, C, python, grads
script with
a call to g2grb.gs or wgrib2.   The wgrib2 solution is described at


http://www.cpc.ncep.noaa.gov/products/wesley/wgrib2/time_interpolation.html

Wesley



On Sun, Dec 18, 2016 at 11:15 PM, Brandon Schmidt <admin at wilmingtonwx.com>
wrote:

> Simplicity is definitely my first priority so I'd definitely opt for
> method #1. Assuming I already have a control file open for a single HRRR
> sub-hourly grid file with 4 time steps, what code is necessary to complete
> the interpolation? I don't really like asking for code but in all the grads
> scripting I've done, I'm at a loss this time. Assuming latitude is varying,
> longitude is varying, and pressure is not (i.e. tmp2m), how do I go from
> being able to display 4 steps of time to 12 steps of time? Do I need a
> separate control file that defines 12 steps?
>
> Thanks again - Brandon
>
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