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; ***********************************************
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; interpolate into model grids (T42)
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; output: lat: S->N lon: 0->360
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; input : lat: N->S lon: -180->180
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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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load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
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;************************************************
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begin
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nclass = 20
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;************************************************
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; output data
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;************************************************
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diro = "/fis/cgd/cseg/people/jeff/clamp_data/lai/ob/"
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filo = "land_class_T31.nc"
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c = addfile(diro+filo,"c")
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;************************************************
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; read in observed data
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;************************************************
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diri = "/fis/cgd/cseg/people/jeff/clamp_data/lai/ob/"
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fili = "land_class_0.25deg_new.nc"
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g = addfile (diri+fili,"r")
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bi = g->LAND_CLASS
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xi = g->lon
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yi = g->lat
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;************************************************
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; change into 0-360E, 90S-90N
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;************************************************
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yi = (/ yi(::-1) /)
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bi = (/ bi(::-1,:) /)
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printVarSummary(bi)
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b2 = bi
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x2 = xi
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nx = dimsizes(xi)
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nx2 = nx/2
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do i= 0,nx-1
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if (i .lt. nx2) then
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p = i + nx2
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xi(p) = x2(i) + 360.
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else
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p = i - nx2
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xi(p) = x2(i)
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end if
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bi(:,p)= b2(:,i)
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end do
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bi&lat = yi
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bi&lon = xi
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print (xi)
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print (yi)
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;exit
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;************************************************
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; read in model data
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;************************************************
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diri2 = "/fis/cgd/cseg/people/jeff/clamp_data/model/"
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fili2 = "b30.061n_1995-2004_ANN_climo_lnd.nc"
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f = addfile (diri2+fili2,"r")
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lon = f->lon
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lat = f->lat
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nlon = dimsizes(lon)
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nlat = dimsizes(lat)
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; print (xi)
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; print (yi)
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; print (xo)
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; print (yo)
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bo = new((/nlat,nlon/),integer)
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count = new((/nclass/),integer)
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do j=0,nlat-1
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if (j.eq.0 .or. j.eq.nlat-1) then
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if (j.eq.0) then
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LATS = -90.
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LATN = lat(j)+0.5*(lat(j+1)-lat(j))
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end if
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if (j.eq.nlat-1) then
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LATS = lat(j)-0.5*(lat(j)-lat(j-1))
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LATN = 90.
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end if
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else
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LATS = lat(j)-0.5*(lat(j)-lat(j-1))
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LATN = lat(j)+0.5*(lat(j+1)-lat(j))
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end if
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do i=0,nlon-1
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if (i.eq.0 .or. i.eq.nlon-1) then
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if (i.eq.0) then
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LONL = 0.
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LONR = lon(i)+0.5*(lon(i+1)-lon(i))
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end if
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if (i.eq.nlon-1) then
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LONL = lon(i)-0.5*(lon(i)-lon(i-1))
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LONR = 360.
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end if
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else
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LONL = lon(i)-0.5*(lon(i)-lon(i-1))
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LONR = lon(i)+0.5*(lon(i+1)-lon(i))
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end if
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;print (LATS)
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;print (LATN)
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;print (LONL)
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;print (LONR)
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count = 0
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do n = 0,nclass-1
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count(n) = num (bi({LATS:LATN},{LONL:LONR}).eq.n)
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end do
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bo(j,i) = maxind(count)
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end do
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end do
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bo!0 = "lat"
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bo!1 = "lon"
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bo&lat = lat
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bo&lon = lon
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bo@units = bi@units
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bo@long_name = bi@long_name
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bo@_FillValue = bi@_FillValue
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print (min(bo) + "/" + max(bo))
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c->LAND_CLASS = bo
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end |