How to plot 95% confidence level contour line over shaded plot..

  Dear ncl users

I computed the correlation between to variables w(time) and
ssta(lat,lon,time) by using escorc function and made the shaded
plot.(ccr2)...Also I computed the probability...Now I want to overlay the
95% confidence level contour line over the shaded plot.(only one black
contour line)...

Any help would be appreciated...

load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"

load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"

load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"

begin

 in1=addfile("test.nc","r")

w=in1->w ;only time

ssta=in1->sst ; lat,lon,time

 ccr2=escorc(w,ssta)

copy_VarAtts(w, ccr2)

copy_VarCoords_1(ssta, ccr2)

 ;*******Compute significance*************************************

 siglevl=0.05

Nx=59

prob=rtest(ccr2,Nx,0)

;************Plotting option*****************************************

 wks=gsn_open_wks("eps","cor_TTindxWD_SO_sst_anom_signi")

gsn_define_colormap(wks,"gui_default")

res=True

res@cnFillOn=True

res@gsnSpreadColors=True

res@cnLinesOn=False

res@lbLabelAutoStride=True

res@mpCenterLonF=180.0

plot=gsn_csm_contour_map_ce(wks,ccr2,res)

end

**********************************
Sebi
Climate and Global Modeling Division
Indian Institute of Tropical Meteorology
Pashan, Pune, 411 008
****************************************

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Received on Thu Mar 4 03:39:00 2010