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下面试出错的提示：
[nwp@mainserver temp]$ ncl wrf_PressureLevel1.ncl
Copyright (C) 1995-2009 - All Rights Reserved
University Corporation for Atmospheric Research
NCAR Command Language Version 5.1.1
The use of this software is governed by a License Agreement.
See http://www.ncl.ucar.edu/ for more details.
fatal:Loop end must be scalar, can't execute loop
fatal:Execute: Error occurred at or near line 175 in file wrf_PressureLevel1.ncl
ncl脚本：
; Example script to produce plots for a WRF real-data run,
; with the ARW coordinate dynamics option.
; Interpolating to specified pressure levels
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl"
begin
;
; The WRF ARW input file.
; This needs to have a ".nc" appended, so just do it.
a = addfile("wrfout_d01_2012-07-10_00_00_00.nc","r")
; We generate plots, but what kind do we prefer?
type = "x11"
; type = "pdf"
; type = "ps"
; type = "ncgm"
wks = gsn_open_wks(type,"plt_PressureLevel1")
; Set some Basic Plot options
res = True
res@MainTitle = "REAL-TIME WRF"
res@Footer = False
pltres = True
mpres = True
mpres@mpGeophysicalLineColor = "Black"
mpres@mpNationalLineColor = "Black"
mpres@mpUSStateLineColor = "Black"
mpres@mpGridLineColor = "Black"
mpres@mpLimbLineColor = "Black"
mpres@mpPerimLineColor = "Black"
mpres@mpGeophysicalLineThicknessF = 2.0
mpres@mpGridLineThicknessF = 2.0
mpres@mpLimbLineThicknessF = 2.0
mpres@mpNationalLineThicknessF = 2.0
mpres@mpUSStateLineThicknessF = 2.0
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; What times and how many time steps are in the data set?
times = wrf_user_getvar(a,"Times",-1) ; get all times in the file
ntimes = dimsizes(times) ; number of times in the file
; The specific pressure levels that we want the data interpolated to.
pressure_levels = (/ 850., 700., 500., 300./) ; pressure levels to plot
nlevels = dimsizes(pressure_levels) ; number of pressure levels
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
do it = 0,ntimes-1,2 ; TIME LOOP
print("Working on time: " + times(it) )
res@TimeLabel = times(it) ; Set Valid time to use on plots
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; First get the variables we will need
tc = wrf_user_getvar(a,"tc",it) ; T in C
u = wrf_user_getvar(a,"ua",it) ; u averaged to mass points
v = wrf_user_getvar(a,"va",it) ; v averaged to mass points
p = wrf_user_getvar(a, "pressure",it) ; pressure is our vertical coordinate
z = wrf_user_getvar(a, "z",it) ; grid point height
rh = wrf_user_getvar(a,"rh",it) ; relative humidity
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
do level = 0,nlevels-1 ; LOOP OVER LEVELS
pressure = pressure_levels(level)
tc_plane = wrf_user_intrp3d(tc,p,"h",pressure,0.,False)
z_plane = wrf_user_intrp3d( z,p,"h",pressure,0.,False)
rh_plane = wrf_user_intrp3d(rh,p,"h",pressure,0.,False)
u_plane = wrf_user_intrp3d( u,p,"h",pressure,0.,False)
v_plane = wrf_user_intrp3d( v,p,"h",pressure,0.,False)
spd = (u_plane*u_plane + v_plane*v_plane)^(0.5) ; m/sec
spd@description = "Wind Speed"
spd@units = "m/s"
u_plane = u_plane*1.94386 ; kts
v_plane = v_plane*1.94386 ; kts
u_plane@units = "kts"
v_plane@units = "kts"
; Plotting options for T
opts = res
opts@cnLineColor = "Red"
opts@ContourParameters = (/ 5.0 /)
opts@cnInfoLabelOrthogonalPosF = 0.07 ; offset second label information
opts@gsnContourLineThicknessesScale = 2.0
contour_tc = wrf_contour(a,wks,tc_plane,opts)
delete(opts)
; Plotting options for RH
opts = res
opts@cnFillOn = True
opts@pmLabelBarOrthogonalPosF = -0.1
opts@ContourParameters = (/ 10., 90., 10./)
opts@cnFillColors = (/"White","White","White", \
"White","Chartreuse","Green",\
"Green3","Green4", \
"ForestGreen","PaleGreen4"/)
contour_rh = wrf_contour(a,wks,rh_plane,opts)
delete(opts)
; Plotting options for Wind Speed
opts = res
opts@cnLineColor = "MediumSeaGreen"
opts@ContourParameters = (/ 10. /)
opts@cnInfoLabelOrthogonalPosF = 0.07 ; offset second label information
opts@gsnContourLineThicknessesScale = 3.0
contour_spd = wrf_contour(a,wks,spd,opts)
delete(opts)
; Plotting options for Wind Vectors
opts = res
opts@FieldTitle = "Wind" ; overwrite Field Title
opts@NumVectors = 47 ; wind barb density
vector = wrf_vector(a,wks,u_plane,v_plane,opts)
delete(opts)
; Plotting options for Geopotential Heigh
opts_z = res
opts_z@cnLineColor = "Blue"
opts_z@gsnContourLineThicknessesScale = 3.0
; MAKE PLOTS
if ( pressure .eq. 850 ) then ; plot temp, rh, height, wind barbs
opts_z@ContourParameters = (/ 20.0 /)
contour_height = wrf_contour(a,wks,z_plane,opts_z)
plot = wrf_map_overlays(a,wks,(/contour_rh,contour_tc,contour_height, \
vector/),pltres,mpres)
end if
if ( pressure .eq. 700 ) then ; plot temp, height, wind barbs
opts_z@ContourParameters = (/ 30.0 /)
contour_height = wrf_contour(a,wks, z_plane,opts_z)
plot = wrf_map_overlays(a,wks,(/contour_tc,contour_height, \
vector/),pltres,mpres)
end if
if ( pressure .eq. 500 ) then ; plot temp, height, wind barbs
opts_z@ContourParameters = (/ 60.0 /)
contour_height = wrf_contour(a,wks, z_plane,opts_z)
plot = wrf_map_overlays(a,wks,(/contour_tc,contour_height, \
vector/),pltres,mpres)
end if
if ( pressure .eq. 300 ) then ; plot windspeed, height, wind barbs
opts_z@ContourParameters = (/ 60.0 /)
contour_height = wrf_contour(a,wks, z_plane,opts_z)
plot = wrf_map_overlays(a,wks,(/contour_spd,contour_height, \
vector/),pltres,mpres)
end if
delete(opts_z)
end do ; END OF LEVEL LOOP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
end do ; END OF TIME LOOP
end
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发表于 2012-9-13 09:21:19
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发表于 2012-9-13 10:21:16
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