Table4.2.10.1 https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table4-2-10-1.shtml DIRC Current Direction degree True SPC Current Speed m s-1 UOGRD U-Component of Current m s-1 VOGRD V-Component of Current m s-1 RIPCOP Rip Current Occurrence Probability % OMLU Ocean Mixed Layer U Velocity m s-1 OMLV Ocean Mixed Layer V Velocity m s-1 UBARO Barotropic U velocity m s-1 VBARO Barotropic V velocity m s-1