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I'm using RTOFS grips for currents in Optimal Routing, and when I look at the results I see "NCEP 00". can someone please tell me what this means?
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It is just the centre, subcentre and process identifiers in the grib file. NCEP is the NOAA centre. 0,0 are probably defaults.
For RTOFS, it would normally be something else, but it doesn't matter functionally.