| 1 | #!/bin/ksh |
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| 2 | #set -xv |
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| 3 | # Function that does a linear interpolation of the variable in |
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| 4 | # filein towards the destionation grid in gridfile. Results in are |
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| 5 | # stored in fileout. |
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| 6 | # |
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| 7 | # Exemple for use : |
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| 8 | # ./era2gcm.ksh grilles_gcm.nc u_filein.nc u_fileout.nc u |
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| 9 | # |
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| 10 | ################################################################### |
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| 11 | # O - Input arguments |
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| 12 | ################################################################### |
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| 13 | # gridfile : File containing the target grid (grilles_gcm.nc) |
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| 14 | gridfile=$1 |
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| 15 | # filein : File containing the variable at source grid |
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| 16 | filein=$2 |
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| 17 | # fileout : Output file with the variable at target grid |
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| 18 | fileout=$3 |
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| 19 | # varin : Variable name in source file |
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| 20 | varin=$4 |
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| 21 | |
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| 22 | ################################################################### |
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| 23 | # 1 - Define variables |
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| 24 | ################################################################### |
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| 25 | # Find number of time step |
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| 26 | tmax=`ncdump -h ${filein} | grep time | head -1 | awk ' { print $6 } '` |
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| 27 | tmax=$( echo ${tmax} | awk '-F(' '{print $2}' ) |
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| 28 | |
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| 29 | # Choose grid and output variable name |
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| 30 | if [ ${varin} = 'u' ] || [ ${varin} = 'vitu' ] ; then |
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| 31 | varout=uwnd |
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| 32 | grille='grille_u' |
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| 33 | elif [ ${varin} = 'v' ] ; then |
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| 34 | varout=vwnd |
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| 35 | grille='grille_v' |
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| 36 | elif [ ${varin} = 'ta' ] ; then |
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| 37 | varout=air |
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| 38 | grille='grille_t' |
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| 39 | elif [ ${varin} = 'r' ] ; then |
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| 40 | varout=rh |
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| 41 | grille='grille_t' |
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| 42 | elif [ ${varin} = 'msl' ] ; then |
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| 43 | varout=sp |
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| 44 | grille='grille_t' |
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| 45 | else |
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| 46 | echo Error : ${varin} unknown!!!! |
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| 47 | exit |
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| 48 | fi |
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| 49 | |
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| 50 | ################################################################### |
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| 51 | # 2 - Create ferret script for interpolation |
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| 52 | ################################################################### |
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| 53 | cat << eod > ${varin}.jnl |
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| 54 | set memory/size=50 |
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| 55 | |
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| 56 | use "${gridfile}" |
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| 57 | use "${filein}" |
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| 58 | let ${varout}=${varin} |
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| 59 | |
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| 60 | define grid/like=${varout}[d=2]/x=grille_u[d=1]/y=grille_u[d=1] grille_u |
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| 61 | define grid/like=${varout}[d=2]/x=grille_v[d=1]/y=grille_v[d=1] grille_v |
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| 62 | define grid/like=${varout}[d=2]/x=grille_v[d=1]/y=grille_u[d=1] grille_t |
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| 63 | |
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| 64 | save/clobber/file="${fileout}" ${varout}[d=2,g=${grille},l=1] |
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| 65 | !repeat/l=1:${tmax} save/file="${fileout}"/append ${varout}[d=2,g=${grille}] |
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| 66 | repeat/l=1:2 save/file="${fileout}"/append ${varout}[d=2,g=${grille}] |
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| 67 | |
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| 68 | exit |
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| 69 | eod |
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| 70 | |
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| 71 | ################################################################### |
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| 72 | # 3 - Launch interpolation with ferret |
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| 73 | ################################################################### |
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| 74 | ferret -nojnl <<eod > /dev/null |
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| 75 | go ${varin}.jnl |
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| 76 | quit |
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| 77 | eod |
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| 78 | |
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| 79 | #} |
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