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;*************************************************
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; ce_1.ncl
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;************************************************
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load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
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load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
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;************************************************
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begin
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;************************************************
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; read in observed data
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;************************************************
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f = addfile ("Npp_T42_mean.nc","r")
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y = f->NPP
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;************************************************
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; read in model data
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;************************************************
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g = addfile ("i01.03cn_1545-1569_ANN_climo.nc","r")
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;g = addfile ("i01.04casa_1605-1629_ANN_climo.nc","r")
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x = g->NPP
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nsec_per_year = 86400.*365.
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x = x * nsec_per_year
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x@units = "gC/m^2/year"
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;************************************************
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;fill ob missing grid the same as model
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;************************************************
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delta = 0.00001
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x0 = x(0,:,:)
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y = where(ismissing(y).and.(ismissing(x0).or.(x0.lt.delta)),0.,y)
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y@units = "gC/m^2/year"
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;************************************************
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;model - observed
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;************************************************
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z = x
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z = x(0,:,:) - y(:,:)
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;************************************************
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; create 3 plots
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;************************************************
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wks = gsn_open_wks("ps","xy") ; open a ps file
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gsn_define_colormap(wks,"gui_default") ; choose colormap
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res = True ; Use plot options
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res@cnFillOn = True ; Turn on color fill
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res@gsnSpreadColors = True ; use full colormap
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; res@cnFillMode = "RasterFill" ; Turn on raster color
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; res@lbLabelAutoStride = True
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res@cnLinesOn = False ; Turn off contourn lines
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res@mpFillOn = False ; Turn off map fill
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res@tiMainString = "Observed MODIS MOD 17"
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res@gsnSpreadColors = True ; use full colormap
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res@cnLevelSelectionMode = "ManualLevels" ; Manual contour invtervals
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res@cnMinLevelValF = 0. ; Min level
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res@cnMaxLevelValF = 2200. ; Max level
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res@cnLevelSpacingF = 200. ; interval
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res@gsnFrame = False ; Do not draw plot
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res@gsnDraw = False ; Do not advance frame
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plot=new(3,graphic) ; create graphic array
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plot(0) = gsn_csm_contour_map_ce(wks,y,res) ; for observed
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res@tiMainString = "Model i01.03cn"
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; res@tiMainString = "Model i01.04casa"
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plot(1) = gsn_csm_contour_map_ce(wks,x(0,:,:),res) ; for model
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res@cnMinLevelValF = -500 ; Min level
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res@cnMaxLevelValF = 500. ; Max level
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res@cnLevelSpacingF = 50. ; interval
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res@tiMainString = "(Model i01.03cn) - (observed)"
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; res@tiMainString = "(Model i01.04casa) - (observed)"
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plot(2) = gsn_csm_contour_map_ce(wks,z(0,:,:),res) ; for model - ob
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;***********************************************
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; create panel plot
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;***********************************************
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pres = True ; panel plot mods desired
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pres@gsnPanelYWhiteSpacePercent = 5 ; increase white space around
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; indiv. plots in panel
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pres@gsnMaximize = True ; fill the page
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gsn_panel(wks,plot,(/3,1/),pres) ; create panel plot
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system("convert xy.ps xy.png")
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end |