| 1 | # Python program to modify any sfc variable from netCDF file to impose aprofile of a given variable |
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| 2 | # L. Fita Borrell, LMD-Jussieu, IPSL, UMPC, CNRS, Paris, France |
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| 3 | # July 2013 |
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| 4 | |
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| 5 | from optparse import OptionParser |
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| 6 | import numpy as np |
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| 7 | from netCDF4 import Dataset as NetCDFFile |
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| 8 | import os |
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| 9 | |
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| 10 | ## g.e. # python sfcVAR_global_modification.py -f met_em.d01_1979-01-01_00:00:00 -k control -v SST -s 300.15 |
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| 11 | |
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| 12 | fname = 'sfcVAR_global_modification.py' |
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| 13 | |
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| 14 | errormsg = 'ERROR -- error -- ERROR -- error' |
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| 15 | |
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| 16 | kelvin=273.15 |
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| 17 | pi3=np.pi/3. |
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| 18 | pi36=np.pi/36. |
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| 19 | |
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| 20 | def HS_kind(Ndims,dimx,dimy,dimt,lonvals,latvals,zero,amp,dl): |
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| 21 | print ' Imposing "Held & Suarez, 94, BAMS" characteristics...' |
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| 22 | if Ndims == 1: |
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| 23 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 24 | for ilat in range(dimy): |
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| 25 | varvals[ilat,:] = amp-dl*np.sin(latvals[ilat])**2. |
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| 26 | elif Ndims==2: |
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| 27 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 28 | for ilat in range(dimy): |
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| 29 | for ilon in range(dimx): |
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| 30 | varvals[ilat,ilon] = amp-dl*np.sin(latvals[ilat,ilon])**2. |
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| 31 | elif Ndims==3: |
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| 32 | varvals = np.zeros((dimt,dimy,dimx), dtype=np.float32) |
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| 33 | for ilat in range(dimy): |
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| 34 | for ilon in range(dimx): |
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| 35 | varvals[:,ilat,ilon] = amp-dl*np.sin(latvals[0,ilat,ilon])**2. |
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| 36 | |
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| 37 | return varvals + zero |
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| 38 | |
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| 39 | |
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| 40 | def control_kind(Ndims,dimx,dimy,dimt,lonvals,latvals,zero,amp): |
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| 41 | print ' Imposing "control" characteristics...' |
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| 42 | if Ndims == 1: |
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| 43 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 44 | for ilat in range(dimy): |
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| 45 | if np.abs(latvals[ilat]) < pi3: |
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| 46 | varvals[ilat,:] = amp*(1.-np.sin(3.*latvals[ilat]/2.)**2.) |
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| 47 | else: |
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| 48 | varvals[ilat,:] = 0. |
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| 49 | elif Ndims==2: |
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| 50 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 51 | for ilat in range(dimy): |
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| 52 | for ilon in range(dimx): |
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| 53 | if np.abs(latvals[ilat,ilon]) < pi3: |
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| 54 | varvals[ilat,ilon] = amp*(1.-np.sin(3.*latvals[ilat,ilon]/2.)**2.) |
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| 55 | else: |
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| 56 | varvals[ilat,ilon] = 0. |
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| 57 | elif Ndims==3: |
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| 58 | varvals = np.zeros((dimt,dimy,dimx), dtype=np.float32) |
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| 59 | for ilat in range(dimy): |
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| 60 | for ilon in range(dimx): |
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| 61 | if np.abs(latvals[0,ilat,ilon]) < pi3: |
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| 62 | varvals[:,ilat,ilon] = amp*(1.-np.sin(3.*latvals[0,ilat,ilon]/2.)**2.) |
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| 63 | else: |
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| 64 | varvals[:,ilat,ilon] = 0. |
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| 65 | |
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| 66 | return varvals + zero |
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| 67 | |
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| 68 | def control5N_kind(Ndims,dimx,dimy,dimt,lonvals,latvals,zero,amp): |
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| 69 | print ' Imposing "control5N" characteristics...' |
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| 70 | if Ndims == 1: |
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| 71 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 72 | for ilat in range(dimy): |
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| 73 | if pi36 < latvals[ilat] and latvals[ilat] < pi3: |
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| 74 | varvals[ilat,:] = amp*(1.-np.sin(90./55.*(latvals[ilat]-pi36))**2.) |
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| 75 | elif -pi3 < latvals[ilat] and latvals[ilat] < pi36: |
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| 76 | varvals[ilat,:] = amp*(1.-np.sin(90./65.*(latvals[ilat]-pi36))**2.) |
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| 77 | else: |
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| 78 | varvals[ilat,:] = 0. |
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| 79 | elif Ndims==2: |
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| 80 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 81 | for ilat in range(dimy): |
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| 82 | for ilon in range(dimx): |
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| 83 | if pi36 <= latvals[ilat,ilon] and latvals[ilat,ilon] < pi3: |
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| 84 | varvals[ilat,ilon] = amp*(1.-np.sin(90./55.*(latvals[ilat,ilon]-pi36))**2.) |
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| 85 | elif -pi3 < latvals[ilat,ilon] and latvals[ilat,ilon] < pi36: |
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| 86 | varvals[ilat,ilon] = amp*(1.-np.sin(90./65.*(latvals[ilat,ilon]-pi36))**2.) |
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| 87 | else: |
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| 88 | varvals[ilat,ilon] = 0. |
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| 89 | elif Ndims==3: |
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| 90 | varvals = np.zeros((dimt,dimy,dimx), dtype=np.float32) |
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| 91 | for ilat in range(dimy): |
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| 92 | for ilon in range(dimx): |
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| 93 | if pi36 <= latvals[0,ilat,ilon] and latvals[0,ilat,ilon] < pi3: |
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| 94 | varvals[:,ilat,ilon] = amp*(1.-np.sin(90./55.*(latvals[0,ilat,ilon]-pi36))**2.) |
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| 95 | elif -pi3 < latvals[0,ilat,ilon] and latvals[0,ilat,ilon] < pi36: |
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| 96 | varvals[:,ilat,ilon] = amp*(1.-np.sin(90./65.*(latvals[0,ilat,ilon]-pi36))**2.) |
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| 97 | else: |
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| 98 | varvals[:,ilat,ilon] = 0. |
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| 99 | |
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| 100 | return varvals + zero |
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| 101 | |
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| 102 | def flat_kind(Ndims,dimx,dimy,dimt,lonvals,latvals,zero,amp): |
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| 103 | print ' Imposing "flat" characteristics...' |
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| 104 | if Ndims == 1: |
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| 105 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 106 | for ilat in range(dimy): |
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| 107 | if np.abs(latvals[ilat]) < pi3: |
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| 108 | varvals[ilat,:] = amp*(1.-np.sin(3.*latvals[ilat]/2.)**4.) |
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| 109 | else: |
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| 110 | varvals[ilat,:] = 0. |
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| 111 | elif Ndims==2: |
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| 112 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 113 | for ilat in range(dimy): |
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| 114 | for ilon in range(dimx): |
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| 115 | if np.abs(latvals[ilat,ilon]) < pi3: |
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| 116 | varvals[ilat,ilon] = amp*(1.-np.sin(3.*latvals[ilat,ilon]/2.)**4.) |
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| 117 | else: |
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| 118 | varvals[ilat,ilon] = 0. |
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| 119 | elif Ndims==3: |
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| 120 | varvals = np.zeros((dimt,dimy,dimx), dtype=np.float32) |
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| 121 | for ilat in range(dimy): |
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| 122 | for ilon in range(dimx): |
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| 123 | if np.abs(latvals[0,ilat,ilon]) < pi3: |
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| 124 | varvals[:,ilat,ilon] = amp*(1.-np.sin(3.*latvals[0,ilat,ilon]/2.)**4.) |
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| 125 | else: |
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| 126 | varvals[:,ilat,ilon] = 0. |
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| 127 | |
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| 128 | return varvals + zero |
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| 129 | |
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| 130 | def KEQ_kind(Ndims,dimx,dimy,dimt,lonvals,latvals,zero,amp,L0,dL,dl): |
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| 131 | print ' Imposing "KEQ" characteristics...' |
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| 132 | npoints=0 |
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| 133 | if Ndims == 1: |
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| 134 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 135 | for ilat in range(dimy): |
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| 136 | for ilon in range(dimx): |
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| 137 | if L0-dL < lonvals[ilon] and lonvals[ilon] < L0+dL and np.abs(latvals[ilat]) < dl: |
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| 138 | npoints = npoints + 1 |
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| 139 | A=np.cos(np.pi/2.*(lonvals[ilon]-L0)/dL)**2. |
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| 140 | B=np.cos(np.pi/2.*latvals[ilat]/dl)**2. |
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| 141 | varvals[ilat,ilon] = amp*A*B |
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| 142 | else: |
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| 143 | varvals[ilat,ilon] = 0. |
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| 144 | elif Ndims==2: |
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| 145 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 146 | for ilat in range(dimy): |
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| 147 | for ilon in range(dimx): |
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| 148 | if L0-dL < lonvals[ilat,ilon] and lonvals[ilat,ilon] < L0+dL and np.abs(latvals[ilat,ilon]) < dl: |
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| 149 | npoints = npoints + 1 |
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| 150 | A=np.cos(np.pi/2.*(lonvals[ilat,ilon]-L0)/dL)**2. |
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| 151 | B=np.cos(np.pi/2.*latvals[ilat,ilon]/dl)**2. |
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| 152 | varvals[ilat,ilon] = amp*A*B |
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| 153 | else: |
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| 154 | varvals[ilat,ilon] = 0. |
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| 155 | elif Ndims==3: |
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| 156 | varvals = np.zeros((dimt,dimy,dimx), dtype=np.float32) |
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| 157 | for ilat in range(dimy): |
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| 158 | for ilon in range(dimx): |
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| 159 | if L0-dL < lonvals[0,ilat,ilon] and lonvals[0,ilat,ilon] < L0+dL and np.abs(latvals[0,ilat,ilon]) < dl: |
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| 160 | npoints = npoints + 1 |
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| 161 | A=np.cos(np.pi/2.*(lonvals[0,ilat,ilon]-L0)/dL)**2. |
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| 162 | B=np.cos(np.pi/2.*latvals[0,ilat,ilon]/dl)**2. |
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| 163 | varvals[:,ilat,ilon] = amp*A*B |
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| 164 | else: |
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| 165 | varvals[:,ilat,ilon] = 0. |
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| 166 | |
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| 167 | if npoints < 1: |
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| 168 | print errormsg |
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| 169 | print ' KEQ: not modified points generated!!!!' |
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| 170 | print ' L0-dL: ',L0-dL |
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| 171 | print ' L0+dL: ',L0+dL |
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| 172 | print ' dl:', dl |
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| 173 | print errormsg |
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| 174 | quit(-1) |
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| 175 | |
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| 176 | return varvals |
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| 177 | |
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| 178 | def KW1_kind(Ndims,dimx,dimy,dimt,lonvals,latvals,zero,amp,L0,dL,dl): |
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| 179 | print ' Imposing "KW1 characteristics...' |
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| 180 | npoints=0 |
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| 181 | if Ndims == 1: |
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| 182 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 183 | for ilat in range(dimy): |
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| 184 | for ilon in range(dimx): |
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| 185 | if np.abs(latvals[ilat]) < dl: |
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| 186 | npoints = npoints + 1 |
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| 187 | A=np.cos(lonvals[ilon]-L0) |
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| 188 | B=np.cos(np.pi/2.*(latvals[ilat])/dl)**2. |
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| 189 | varvals[ilat,ilon] = amp*A*B |
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| 190 | else: |
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| 191 | varvals[ilat,ilon] = 0. |
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| 192 | elif Ndims==2: |
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| 193 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 194 | for ilat in range(dimy): |
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| 195 | for ilon in range(dimx): |
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| 196 | if np.abs(latvals[ilat,ilon]) < dl: |
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| 197 | npoints = npoints + 1 |
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| 198 | A=np.cos(lonvals[ilat,ilon]-L0) |
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| 199 | B=np.cos(np.pi/2.*(latvals[ilat,ilon])/dl)**2. |
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| 200 | varvals[ilat,ilon] = amp*A*B |
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| 201 | else: |
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| 202 | varvals[ilat,ilon] = 0. |
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| 203 | elif Ndims==3: |
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| 204 | varvals = np.zeros((dimt,dimy,dimx), dtype=np.float32) |
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| 205 | for ilat in range(dimy): |
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| 206 | for ilon in range(dimx): |
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| 207 | if np.abs(latvals[0,ilat,ilon]) < dl: |
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| 208 | npoints = npoints + 1 |
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| 209 | A=np.cos(lonvals[0,ilat,ilon]-L0) |
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| 210 | B=np.cos(np.pi/2.*(latvals[0,ilat,ilon])/dl)**2. |
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| 211 | varvals[:,ilat,ilon] = amp*A*B |
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| 212 | else: |
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| 213 | varvals[:,ilat,ilon] = 0. |
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| 214 | |
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| 215 | if npoints < 1: |
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| 216 | print errormsg |
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| 217 | print ' KW1: not modified points generated!!!!' |
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| 218 | print ' dl:', dl |
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| 219 | print errormsg |
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| 220 | quit(-1) |
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| 221 | |
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| 222 | return varvals |
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| 223 | |
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| 224 | def peaked_kind(Ndims,dimx,dimy,dimt,lonvals,latvals,zero,amp): |
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| 225 | print ' Imposing "peaked" characteristics...' |
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| 226 | if Ndims == 1: |
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| 227 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 228 | for ilat in range(dimy): |
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| 229 | if np.abs(latvals[ilat]) < pi3: |
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| 230 | varvals[ilat,:] = amp*(1.-(3.*np.abs(latvals[ilat])/np.pi)) |
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| 231 | else: |
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| 232 | varvals[ilat,:] = 0. |
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| 233 | elif Ndims==2: |
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| 234 | varvals = np.zeros((dimy,dimx), dtype=np.float32) |
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| 235 | for ilat in range(dimy): |
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| 236 | for ilon in range(dimx): |
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| 237 | if np.abs(latvals[ilat,ilon]) < pi3: |
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| 238 | varvals[ilat,ilon] = amp*(1.-(3.*np.abs(latvals[ilat,ilon])/np.pi)) |
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| 239 | else: |
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| 240 | varvals[ilat,ilon] = 0. |
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| 241 | elif Ndims==3: |
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| 242 | varvals = np.zeros((dimt,dimy,dimx), dtype=np.float32) |
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| 243 | for ilat in range(dimy): |
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| 244 | for ilon in range(dimx): |
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| 245 | if np.abs(latvals[0,ilat,ilon]) < pi3: |
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| 246 | varvals[:,ilat,ilon] = amp*(1.-(3.*np.abs(latvals[0,ilat,ilon])/np.pi)) |
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| 247 | else: |
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| 248 | varvals[:,ilat,ilon] = 0. |
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| 249 | |
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| 250 | return varvals + zero |
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| 251 | |
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| 252 | ####### ###### ##### #### ### ## # |
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| 253 | |
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| 254 | parser = OptionParser() |
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| 255 | parser.add_option("-f", "--netCDF_file", dest="ncfile", |
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| 256 | help="file to use", metavar="FILE") |
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| 257 | parser.add_option("-k", "--kindMOD", type='choice', dest="modkind", |
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| 258 | choices=['control', 'control5N', 'flat', 'peaked', 'Qobs', 'KEQ', 'KW1', 'HS'], |
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| 259 | help="kind of modification from Neale and Hoskins, Atmos. Sci. Letters, (2001), HS: Held & Suarez, 1994 conditions (uses [ref]:[amp]:[perAmp, as /\Ty])", metavar="VALUE") |
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| 260 | parser.add_option("-L", "--longitude", dest="lonname", |
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| 261 | help="name of the longitude", metavar="VAR") |
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| 262 | parser.add_option("-l", "--latitude", dest="latname", |
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| 263 | help="name of the latitude", metavar="VAR") |
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| 264 | parser.add_option("-v", "--variable", dest="varname", |
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| 265 | help="variable to modify", metavar="VAR") |
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| 266 | parser.add_option("-s", "--values", dest="values", |
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| 267 | help="aditional values for 'KEQ' and 'KW1' [ref, in [units]]:[amp, with respect 'ref' in [units]]:[perAmp, in [units]]:[L0, in deg]:[dL, in deg]:[dl, in deg]", metavar="VAR") |
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| 268 | |
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| 269 | (opts, args) = parser.parse_args() |
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| 270 | |
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| 271 | ####### ####### |
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| 272 | ## MAIN |
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| 273 | ####### |
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| 274 | |
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| 275 | if not os.path.isfile(opts.ncfile): |
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| 276 | print errormsg |
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| 277 | print ' File ' + opts.ncfile + ' does not exist !!' |
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| 278 | print errormsg |
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| 279 | quit() |
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| 280 | |
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| 281 | ncf = NetCDFFile(opts.ncfile,'a') |
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| 282 | |
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| 283 | if not ncf.variables.has_key(opts.varname): |
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| 284 | print errormsg |
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| 285 | print ' ' + fname + ': File "' + opts.ncfile + '" does not have variable "' + opts.varname + '" !!!!' |
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| 286 | print errormsg |
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| 287 | ncf.close() |
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| 288 | quit(-1) |
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| 289 | |
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| 290 | additionalvalues = opts.values.split(':') |
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| 291 | Nvalues = len(additionalvalues) |
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| 292 | if opts.modkind == 'KEQ' or opts.modkind == 'KW1': |
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| 293 | if Nvalues != 6: |
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| 294 | print errormsg |
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| 295 | print ' ' + fname + ': options "KEQ" and "KW1" require 4 additional arguments! ',Nvalues,' provided!' |
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| 296 | print errormsg |
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| 297 | ncf.close() |
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| 298 | quit(-1) |
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| 299 | else: |
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| 300 | refval = np.float32(additionalvalues[0]) |
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| 301 | amplitude = np.float32(additionalvalues[1]) |
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| 302 | Peramplitude = np.float32(additionalvalues[2]) |
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| 303 | Lon0 = np.float32(additionalvalues[3])*np.pi/180. |
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| 304 | dLon = np.float32(additionalvalues[4])*np.pi/180. |
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| 305 | dlat = np.float32(additionalvalues[5])*np.pi/180. |
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| 306 | print ' ' + fname +': additional values____' |
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| 307 | print ' ref: ',refval |
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| 308 | print ' amp: ',amplitude |
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| 309 | print ' perAmp: ',Peramplitude |
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| 310 | print ' L0: ',Lon0 |
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| 311 | print ' dL: ',dLon |
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| 312 | print ' dl: ',dlat |
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| 313 | elif opts.modkind == 'HS': |
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| 314 | if Nvalues != 3: |
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| 315 | print errormsg |
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| 316 | print ' ' + fname + ': option "HS" requires 3 additional arguments! ',Nvalues,' provided!' |
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| 317 | print errormsg |
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| 318 | ncf.close() |
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| 319 | quit(-1) |
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| 320 | else: |
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| 321 | refval = np.float32(additionalvalues[0]) |
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| 322 | amplitude = np.float32(additionalvalues[1]) |
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| 323 | Peramplitude = np.float32(additionalvalues[2]) |
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| 324 | print ' ' + fname +': additional values____' |
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| 325 | print ' ref: ',refval |
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| 326 | print ' amp: ',amplitude |
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| 327 | print ' perAmp: ',Peramplitude |
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| 328 | else: |
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| 329 | refval = np.float32(additionalvalues[0]) |
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| 330 | amplitude = np.float32(additionalvalues[1]) |
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| 331 | print ' ' + fname +': values____' |
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| 332 | print ' ref: ',refval |
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| 333 | print ' amp: ',amplitude |
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| 334 | |
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| 335 | objvarmod = ncf.variables[opts.varname] |
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| 336 | objlon = ncf.variables[opts.lonname] |
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| 337 | objlat = ncf.variables[opts.latname] |
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| 338 | |
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| 339 | Nds = len(objvarmod.shape) |
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| 340 | if Nds == 1: |
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| 341 | dx = objlon.shape[0] |
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| 342 | dy = objlat.shape[0] |
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| 343 | else: |
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| 344 | dx = objlon.shape[Nds-1] |
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| 345 | dy = objlon.shape[Nds-2] |
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| 346 | if Nds == 3: |
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| 347 | dt = objvarmod.shape[0] |
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| 348 | else: |
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| 349 | dt = 0 |
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| 350 | |
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| 351 | if Nds > 3: |
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| 352 | print errormsg |
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| 353 | print fname + ': Ndims= ',Nds,' not ready !!!' |
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| 354 | print errormsg |
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| 355 | ncf.close() |
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| 356 | quit(-1) |
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| 357 | |
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| 358 | print fname + ': Ndims: ',Nds,' dimensions of the matrices: ', dt, ', ', dy, ',', dx |
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| 359 | |
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| 360 | lonV=objlon[:] |
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| 361 | lonV=np.where(lonV < 0., lonV + 360., lonV) |
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| 362 | lonV=lonV*np.pi/180. |
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| 363 | latV=objlat[:]*np.pi/180. |
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| 364 | |
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| 365 | if opts.modkind == 'HS': |
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| 366 | varVals = HS_kind(Nds,dx,dy,dt,lonV,latV,refval,amplitude,Peramplitude) |
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| 367 | |
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| 368 | elif opts.modkind == 'control': |
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| 369 | varVals = control_kind(Nds,dx,dy,dt,lonV,latV,refval,amplitude) |
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| 370 | |
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| 371 | elif opts.modkind == 'control5N': |
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| 372 | varVals = control5N_kind(Nds,dx,dy,dt,lonV,latV,refval,amplitude) |
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| 373 | |
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| 374 | elif opts.modkind == 'flat': |
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| 375 | varVals = flat_kind(Nds,dx,dy,dt,lonV,latV,refval,amplitude) |
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| 376 | |
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| 377 | elif opts.modkind == 'KEQ': |
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| 378 | varvalues=objvarmod[:] |
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| 379 | varValsA = varvalues.copy() |
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| 380 | varValsB = varvalues.copy() |
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| 381 | varValsA = control_kind(Nds,dx,dy,dt,lonV,latV,refval,amplitude) |
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| 382 | varValsB = KEQ_kind(Nds,dx,dy,dt,lonV,latV,refval,Peramplitude,Lon0,dLon,dlat) |
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| 383 | varVals= varValsA + varValsB |
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| 384 | |
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| 385 | elif opts.modkind == 'KW1': |
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| 386 | varvalues=objvarmod[:] |
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| 387 | varValsA = varvalues.copy() |
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| 388 | varValsB = varvalues.copy() |
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| 389 | varValsA = control_kind(Nds,dx,dy,dt,lonV,latV,refval,amplitude) |
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| 390 | varValsB = KW1_kind(Nds,dx,dy,dt,lonV,latV,refval,Peramplitude,Lon0,dLon,dlat) |
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| 391 | varVals= varValsA + varValsB |
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| 392 | |
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| 393 | elif opts.modkind == 'peaked': |
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| 394 | varVals = peaked_kind(Nds,dx,dy,dt,lonV,latV,refval,amplitude) |
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| 395 | |
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| 396 | elif opts.modkind == 'Qobs': |
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| 397 | varvalues=objvarmod[:] |
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| 398 | varvals1=varvalues.copy() |
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| 399 | varvals2=varvalues.copy() |
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| 400 | |
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| 401 | varvals1 = control_kind(Nds,dx,dy,dt,lonV,latV,refval,amplitude) |
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| 402 | varvals2 = flat_kind(Nds,dx,dy,dt,lonV,latV,refval,amplitude) |
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| 403 | |
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| 404 | varVals = (varvals1 + varvals2)/2. |
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| 405 | |
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| 406 | else: |
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| 407 | print errormsg |
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| 408 | print ' ' + fname + ': kind "' + opts.modkind + '" does not exist!!!' |
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| 409 | print errormsg |
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| 410 | ncf.close() |
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| 411 | quit(-1) |
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| 412 | |
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| 413 | objvarmod[:] = varVals |
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| 414 | |
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| 415 | ncf.sync() |
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| 416 | ncf.close() |
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| 417 | |
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| 418 | print fname + ': "' + opts.varname + '" of "' + opts.ncfile + '" has been modified with the "' + opts.modkind + '"' |
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