1 | function ext_tracers2(oaname,month_datafile,seas_datafile,... |
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2 | dataname,vname,tname); |
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3 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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4 | % |
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5 | % |
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6 | % pierrick 2002 |
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7 | % |
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8 | % Ext tracers in a ROMS climatology file |
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9 | % take monthly data for the upper levels and |
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10 | % seasonnal data for the |
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11 | % lower levels |
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12 | % |
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13 | % input: |
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14 | % |
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15 | % oaname : roms oa file to process (netcdf) |
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16 | % month_datafile : regular longitude - latitude - z seasonal data |
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17 | % file used for the upper levels (netcdf) |
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18 | % seas_datafile : regular longitude - latitude - z annual data |
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19 | % file used for the lower levels (netcdf) |
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20 | % |
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21 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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22 | disp(' ') |
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23 | % |
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24 | % set the value of ro (oa decorrelation scale [m]) |
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25 | % and default (value if no data) |
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26 | % |
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27 | ro=1e8; |
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28 | default=NaN; |
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29 | disp([' Ext tracers: ro = ',num2str(ro/1000),... |
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30 | ' km - default value = ',num2str(default)]) |
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31 | % |
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32 | % Read in the datafile |
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33 | % |
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34 | ncmonth=netcdf(month_datafile); |
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35 | x=ncmonth{'X'}(:); |
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36 | y=ncmonth{'Y'}(:); |
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37 | zmonth=-ncmonth{'Z'}(:); |
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38 | t=ncmonth{'T'}(:); |
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39 | tlen=length(t); |
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40 | Nzmonth=length(zmonth); |
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41 | % |
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42 | % Open the grid file |
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43 | % |
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44 | ng=netcdf(oaname); |
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45 | lon=ng{'lon_rho'}(:); |
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46 | lon(lon<0)=lon(lon<0)+360; |
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47 | lat=ng{'lat_rho'}(:); |
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48 | close(ng); |
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49 | [M,L]=size(lon); |
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50 | dl=0.5; |
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51 | minlon=min(min(lon))-dl; |
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52 | maxlon=max(max(lon))+dl; |
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53 | minlat=min(min(lat))-dl; |
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54 | maxlat=max(max(lat))+dl; |
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55 | imin=max(find(x<=minlon)); |
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56 | imax=min(find(x>=maxlon)); |
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57 | jmin=max(find(y<=minlat)); |
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58 | jmax=min(find(y>=maxlat)); |
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59 | x=x(imin:imax); |
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60 | y=y(jmin:jmax); |
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61 | % |
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62 | % Open the OA file |
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63 | % |
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64 | nc=netcdf(oaname,'write'); |
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65 | Z=-nc{'Z'}(:); |
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66 | Nz=length(Z); |
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67 | % |
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68 | % Check the time |
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69 | % |
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70 | tclim=nc{tname}(:); |
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71 | t=t*30; % if time in month in the dataset !!! |
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72 | if (tclim~=t) |
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73 | disp('Warning !! time mismatch') |
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74 | disp(' tclim = ') |
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75 | tclim |
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76 | disp(' t = ') |
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77 | t |
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78 | end |
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79 | % |
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80 | % Read the seasonal dataset |
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81 | % |
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82 | if Nz > Nzmonth |
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83 | ncseas=netcdf(seas_datafile); |
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84 | zseas=-ncseas{'Z'}(1:Nz); |
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85 | if (Z~=zseas) |
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86 | error('Vertical levels mismatch') |
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87 | end |
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88 | % |
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89 | % Interpole the seasonal dataset on the horizontal ROMS grid |
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90 | % |
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91 | disp(' Ext tracers: horizontal interpolation of the annual data') |
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92 | if zmonth~=zseas(1:length(zmonth)) |
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93 | error('vertical levels dont match') |
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94 | end |
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95 | datazgrid=zeros(Nz,M,L); |
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96 | missval=ncseas{dataname}.missing_value(:); |
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97 | for k=Nzmonth+1:Nz |
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98 | data=squeeze(ncseas{dataname}(k,jmin:jmax,imin:imax)); |
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99 | data=get_missing_val(x,y,data,missval,ro,default); |
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100 | datazgrid(k,:,:)=interp2(x,y,data,lon,lat,'cubic'); |
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101 | end |
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102 | close(ncseas); |
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103 | end |
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104 | % |
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105 | % interpole the seasonal dataset on the horizontal roms grid |
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106 | % |
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107 | disp([' Ext tracers: horizontal interpolation of the seasonal data']) |
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108 | % |
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109 | % loop on time |
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110 | % |
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111 | missval=ncmonth{dataname}.missing_value(:); |
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112 | for l=1:tlen |
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113 | %for l=1:1 |
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114 | disp(['time index: ',num2str(l),' of total: ',num2str(tlen)]) |
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115 | if Nz <= Nzmonth |
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116 | datazgrid=zeros(Nz,M,L); |
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117 | end |
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118 | for k=1:min([Nz Nzmonth]) |
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119 | data=squeeze(ncmonth{dataname}(l,k,jmin:jmax,imin:imax)); |
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120 | data=get_missing_val(x,y,data,missval,ro,default); |
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121 | datazgrid(k,:,:)=interp2(x,y,data,lon,lat,'cubic'); |
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122 | end |
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123 | nc{vname}(l,:,:,:)=datazgrid; |
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124 | end |
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125 | close(nc); |
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126 | close(ncmonth); |
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127 | return |
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