begin a = addfile("/scale_wlg_nobackup/filesets/nobackup/uoa02450/2017_Model Results/wrfout_d03_2017JFMAMJJASOND_00:00:00_Time.nc","r") type = "pdf" wks = gsn_open_wks(type,"Average Wind Speed - Jan-Dec 2017") res = True res@mpProjection = "Mercator" ; The default res@mpDataBaseVersion = "HighRes" times = wrf_user_getvar(a,"times",-1) ntimes = dimsizes(times) u = wrf_user_getvar(a,"ua",-1) v = wrf_user_getvar(a,"va",-1) spd = (u*u + v*v)^(0.5) spd@description = "Wind Speed" spd@units = "m s-1" spd_avg = dim_avg_n(spd(0:365,:,:,:),0) spd_avg@description = "Average Wind Speed" spd_avg@units = "m s-1" res = True opts = res opts@cnFillOn = True opts@cnLinesOn = True opts@ContourParameters = (/ 0., 12., 0.5/) opts@gsnSpreadColorEnd = -3 contour_spd_avg = wrf_contour(a,wks,spd_avg(0,:,:),opts) delete(opts) plot = wrf_map_overlays(a,wks,(/contour_spd_avg/),res,res) end