Hi Matt, I use the following procedure after opening a netcdf file: library(netCDF) wind<-read.netCDF("C:/Toño/datos/fnomc_nc/wind.nc") str(wind) a<-wind$"UV_MAG_MEAN" a[a == attributes(a)$"missing_value"] <- NA dimnames(a) <- list(wind$"TIME_SERIES",wind$"LAT125_128",wind$"LON351_354") Hope this helps Cheers, Antonio Rodriguez