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Restarts not exact

PostPosted: Tue Dec 12, 2017 3:53 pm
by rmcgrath
I'm using WRFV3.9.1 I find the restart facility works but is not exact I.e. a restarted forecast does not exactly match an uninterrupted forecast validating at the same date/time. The differences are small, very small for some parameters such as surface pressure, but up to a max of ~1m/s for some winds, with comparable differences for other parameters; these values are for a 48-hour forecast restarted at 24-hours. Is this expected? Is it due to rounding errors in the write out of restart fields?