Tim Marchok

Okay, I figured it out. In case anyone has a similar issue, I'll explain what I did. I abandoned trying to use ncap2 and looked into using cdo instead. Here is the command that worked using cdo: cdo settaxis,2023-09-04,18:00:00,1hour nggps2d_ord1.nc testfix.nc And after doing this, the first line from my list of forecast values from an ncdump of testfix.nc yields this: time = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, And synoptic plots of the data all check out okay.

Hi there. I am processing data from a global model. I need to change the value of just the first forecast lead time value in a NetCDF file from its current value of 0.04166667 (hours) to 0 (hours), in order for a downstream application to properly identify and read in my first record as the hour0 record. For this particular application, the difference between the first timestep (0.04166667h) and what would truly be the initial field (0h) does not matter scientifically, but from a data processing...