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<p>Hello</p>
<p>I have 2 important question and they are about curvilinear Oceanic Data , SST.</p>
<p>I really need HElp. </p>
<p>============================================</p>
<p>first Question:==></p>
<p>these are my data files</p>
<p>tos_Omon_GFDL-CM3_historical_r1i1p1_192501-192912.nc</p>
<p>tos_Omon_GFDL-CM3_historical_r1i1p1_193001-193412.nc</p>
<p>tos_Omon_GFDL-CM3_historical_r1i1p1_193501-193912.nc</p>
<p>tos_Omon_GFDL-CM3_historical_r1i1p1_194001-194412.nc</p>
<p>.</p>
<p>.</p>
<p>.</p>
<p>tos_Omon_GFDL-CM3_historical_r1i1p1_199501-199912.nc</p>
<p>tos_Omon_GFDL-CM3_historical_r1i1p1_200001-200412.nc</p>
<p>*****************************************************</p>
<p>and it is the attribute of one of these files :</p>
<p>netcdf tos_Omon_GFDL-CM3_historical_r1i1p1_192501-192912 {<br /> dimensions:<br /> time = UNLIMITED ; // (60 currently)<br /> bnds = 2 ;<br /> rlat = 200 ;<br /> rlon = 360 ;<br /> vertices = 4 ;<br /> variables:<br /> double average_DT(time) ;<br /> average_DT:long_name = "Length of average period" ;<br /> average_DT:units = "days" ;<br /> double average_T1(time) ;<br /> average_T1:long_name = "Start time for average period" ;<br /> average_T1:units = "days since 1860-01-01 00:00:00" ;<br /> double average_T2(time) ;<br /> average_T2:long_name = "End time for average period" ;<br /> average_T2:units = "days since 1860-01-01 00:00:00" ;<br /> double bnds(bnds) ;<br /> bnds:long_name = "vertex number" ;<br /> bnds:cartesian_axis = "N" ;<br /> float tos(time, rlat, rlon) ;<br /> tos:missing_value = 1.e+20f ;<br /> tos:original_name = "sst + 273.15" ;<br /> tos:cell_methods = "time: mean" ;<br /> tos:valid_range = 263.f, 373.f ;<br /> tos:units = "K" ;<br /> tos:long_name = "Sea Surface Temperature" ;<br /> tos:coordinates = "lat lon" ;<br /> tos:_FillValue = 1.e+20f ;<br /> tos:standard_name = "surface_temperature" ;<br /> tos:cell_measures = "area: areacello" ;<br /> tos:comments = "Note: This model output is presented on the model\'s tripolar grid. The North Pole singularity is avoided by using this nonregular grid north of 65N. More information about the ocean and sea ice model\'s grid can be found at http://nomads.gfdl.noaa.gov/." ;<br /> tos:associated_files = "baseURL: http://cmip-pcmdi.llnl.gov/CMIP5/dataLocation gridspecFile: gridspec_ocean_fx_GFDL-CM3_historical_r0i0p0.nc areacello: areacello_fx_GFDL-CM3_historical_r0i0p0.nc" ;<br /> tos:original_units = "K" ;<br /> double time(time) ;<br /> time:long_name = "time" ;<br /> time:units = "days since 1860-01-01 00:00:00" ;<br /> time:cartesian_axis = "T" ;<br /> time:calendar_type = "noleap" ;<br /> time:calendar = "noleap" ;<br /> time:bounds = "time_bnds" ;<br /> time:standard_name = "time" ;<br /> time:axis = "T" ;<br /> double time_bnds(time, bnds) ;<br /> time_bnds:long_name = "time axis boundaries" ;<br /> time_bnds:units = "days since 1860-01-01 00:00:00" ;<br /> double rlon(rlon) ;<br /> rlon:long_name = "longitude in rotated pole grid" ;<br /> rlon:units = "degrees" ;<br /> rlon:axis = "X" ;<br /> rlon:standard_name = "grid_longitude" ;<br /> double rlat(rlat) ;<br /> rlat:long_name = "latitude in rotated pole grid" ;<br /> rlat:units = "degrees" ;<br /> rlat:axis = "Y" ;<br /> rlat:standard_name = "grid_latitude" ;<br /> float lat(rlat, rlon) ;<br /> lat:long_name = "latitude coordinate" ;<br /> lat:units = "degrees_north" ;<br /> lat:standard_name = "latitude" ;<br /> lat:bounds = "lat_vertices" ;<br /> double lat_vertices(rlat, rlon, vertices) ;<br /> lat_vertices:units = "degrees_north" ;<br /> float lon(rlat, rlon) ;<br /> lon:long_name = "longitude coordinate" ;<br /> lon:units = "degrees_east" ;<br /> lon:standard_name = "longitude" ;<br /> lon:bounds = "lon_vertices" ;<br /> double lon_vertices(rlat, rlon, vertices) ;<br /> lon_vertices:units = "degrees_east" ;<br /> int vertices(vertices) ;</p>
<p>// global attributes:<br /> :title = "NOAA GFDL GFDL-CM3, historical (run 1) experiment output for CMIP5 AR5" ;<br /> :institute_id = "NOAA GFDL" ;<br /> :source = "GFDL-CM3 2010 atmosphere: AM3 (AM3p9,C48L48); sea ice: SIS (SISp2,Tripolar360x200); land: LM3 (LM3p7_cCM3,C48); ocean: MOM4 (MOM4p1_x1_Z50_cCM3,Tripolar360x200L50)" ;<br /> :contact = "gfdl.climate.model.info@noaa.gov" ;<br /> :project_id = "CMIP5" ;<br /> :table_id = "Table Omon (31 Jan 2011)" ;<br /> :experiment_id = "historical" ;<br /> :realization = 1 ;<br /> :modeling_realm = "ocean" ;<br /> :tracking_id = "b062901f-bdec-46e5-ba81-f6dd63777987" ;<br /> :Conventions = "CF-1.4" ;<br /> :references = "The GFDL Data Portal (http://nomads.gfdl.noaa.gov/) provides access to NOAA/GFDL\'s publicly available model input and output data sets. From this web site one can view and download data sets and documentation, including those related to the GFDL coupled models experiments run for the IPCC\'s 5th Assessment Report and the US CCSP." ;<br /> :comment = "GFDL experiment name: CM3Z_D1_1860-2005_AllForc_H1\n",<br /> "GFDL parent experiment name: CM3Z_Control-1860_D1\n",<br /> "CMIP5 experiment ID: historical\n",<br /> "Initial conditions from this experiment (CMIP5 expt. 3.2 Core) were taken from 01Jan0001 of the 1860 control model experiment CM3Z_Control-1860_D1.\n",<br /> "Forcing agents (7 WMGGs, tropospheric and stratospheric ozone, land use, volcanoes, solar, sulfate, black carbon,\n",<br /> "organic carbon, dust, and sea salt) vary historically from 1860-2005 following prescribed emission or concentration\n",<br /> "timeseries or internally calculated emissions. This model includes direct and indirect aerosol effects." ;<br /> :gfdl_experiment_name = "CM3Z_D1_1860-2005_AllForc_H1" ;<br /> :creation_date = "2011-08-22T06:05:17Z" ;<br /> :model_id = "GFDL-CM3" ;<br /> :branch_time = "0.0" ;<br /> :experiment = "historical" ;<br /> :forcing = "GHG,SA,Oz,LU,Sl,Vl,SS,BC,MD,OC (GHG includes CO2, CH4, N2O, CFC11, CFC12, HCFC22, CFC113)" ;<br /> :frequency = "mon" ;<br /> :initialization_method = 1 ;<br /> :parent_experiment_id = "piControl" ;<br /> :physics_version = 1 ;<br /> :product = "output1" ;<br /> :institution = "NOAA GFDL(201 Forrestal Rd, Princeton, NJ, 08540)" ;<br /> :history = "File was processed by fremetar (GFDL analog of CMOR). TripleID: [exper_id_1XhP9uft45,realiz_id_4e0zLckGg3,run_id_HhaU8NYVBh]" ;<br /> :parent_experiment_rip = "r1i1p1" ;</p>
<p>***********************************************************************************************************************</p>
<p>when I read just one of these files ,my script can plot the Sea Surface Temperature</p>
<p>but</p>
<p>when I read all the 16 files, the ncl plot it with "phase difference".</p>
<p>In below you can see</p>
<p>the result of printVarSummary(lat2d) for the single file and multiple files</p>
<p>=======================</p>
<p>Variable: lat2d<br /> Type: float<br /> Total Size: 288000 bytes<br /> 72000 values<br /> Number of Dimensions: 2<br /> Dimensions and sizes: [rlat | 200] x [rlon | 360]<br /> Coordinates:<br /> rlat: [-81.5..89.50000080000001]<br /> rlon: [-279.5..79.5]<br /> Number Of Attributes: 4<br /> long_name : latitude coordinate<br /> units : degrees_north<br /> standard_name : latitude<br /> bounds : lat_vertices</p>
<p>====================</p>
<p>Variable: lat2dH<br /> Type: float<br /> Total Size: 4608000 bytes<br /> 1152000 values<br /> Number of Dimensions: 2<br /> Dimensions and sizes: [rlat | 3200] x [rlon | 360]<br /> Coordinates:<br /> rlat: [-81.5..89.50000080000001]<br /> rlon: [-279.5..79.5]<br /> Number Of Attributes: 4<br /> long_name : latitude coordinate<br /> units : degrees_north<br /> standard_name : latitude<br /> bounds : lat_vertices</p>
<p>==============</p>
<p>my script is in below:</p>
<p>==============================================>>></p>
<p>;***********************************************<br /> begin<br /> ;************************************************</p>
<p>diri = "/home1/omid/Marjani/DATA/CMIP5/GFDL-CM3_curv2/hisGFDL-CM3/" ; input directory<br /> fili = "tos_Omon_GFDL-CM3_historical_r1i1p1_192501-192912.nc" ; your file tos(1872*300*360)<br /> pthi = diri+fili<br /> f = addfile( pthi, "r")<br /> SST = f->tos<br /> lat2d = f->lat<br /> lon2d =f->lon</p>
<p><br /></p>
<p>; filess = systemfunc ("ls /home1/omid/Marjani/DATA/CMIP5/GFDL-CM3_curv2/hisGFDL-CM3/tos_Omon_GFDL-CM3_historical_r1i1p1*.nc")<br /> ;H = addfiles(filess,"r")<br /> ;ListSetType (H, "cat") ; concatenate (=default)<br /> ;SSTH= H[:]->tos<br /> ; lat2dH = H[:]->lat<br /> ; lon2dH=H[:]->lon</p>
<p>;*********************************************************************************************</p>
<p>; printVarSummary(SST)<br /> ;printVarSummary(SSTH)</p>
<p>;printVarSummary(lat2d)<br /> ;printVarSummary(lat2dH)</p>
<p>;=============================================================================<br /> ; First Part=> PLOT SST<br /> ;===============================================================================<br /> wks = gsn_open_wks("x11","marjani")<br /> gsn_define_colormap(wks,"BlAqGrYeOrReVi200") ; choose colormap<br /> res = True<br /> res@cnFillOn = True ; turn on color<br /> res@cnFillMode = "RasterFill" ; turn on raster mode ... optional<br /> res@cnLinesOn = False ; turn off contour lines<br /> res@cnLineLabelsOn = False</p>
<p>res@cnLineLabelsOn = False<br /> res@cnFillPalette = "BlAqGrYeOrReVi200" ; your choice<br /> res@gsnAddCyclic = True ;-- lon < 360 degrees<br /> res@tiMainString = "SST_I" ; title</p>
<p>SST@lat2d = lat2d<br /> SST@lon2d = lon2d</p>
<p>; ******************************************************<br /> res@mpMinLonF = 0<br /> res@mpMaxLonF = 360<br /> res@mpCenterLonF = 180 ; This is necessary to get the correct ma</p>
<p><br /> ;==========================================================================<br /> plot = gsn_csm_contour_map_ce(wks,SSTH(4,:,:),res) ; Can not plot it by the use of systemfunc and just can do it when i use 1data file</p>
<p>;.................................................................<br /> ;SSTmean=dim_avg_n_Wrap(SST(0:59,:,:),0)<br /> ;copy_VarCoords(SST, SSTmean)<br /> ;plot = gsn_csm_contour_map_ce(wks,SSTmean,res) <br /> ;......................................................<br /> ;s=SST(10,:,:)<br /> ;anom = s - SSTmean<br /> ;copy_VarCoords(SSTmean, anom)<br /> ;copy_VarAtts(SSTmean, anom)<br /> ;plot = gsn_csm_contour_map_ce(wks,anom,res) ;nemitoone<br /> ;.............................................................<br /> ;anomSST = dim_rmvmean_n_Wrap(SST(11:611:12,:,:),0)<br /> ;plot = gsn_csm_contour_map_ce(wks,anomSST(1,:,:),res)</p>
<p><br /> ;========================================================================================</p>
<p>; Second Part</p>
<p>;========================================================================</p>
<p>....................................................................<br /> ...................................................................<br /> ;print("--------print(lat2d(:,160))----------------") <br /> ;print(lat2d(:,160))<br /> ;print("--------print(lon2d(:,160))----------------")<br /> ;print(lon2d(:,160))</p>
<p>;print("--------print(lat2d(:,190)----------------") <br /> ;print(lat2d(:,190))<br /> ;print("--------print(lon2d(:,190)----------------")<br /> <br /> ;==============================</p>
<p>;print("--------print(lat2d(:,64))----------------") <br /> ;print(lat2d(:,64))<br /> ;print("--------print(lon2d(:,64))----------------")<br /> ;print(lon2d(:,64))</p>
<p>;print("--------print(lat2d(:,87))----------------") <br /> ;print(lat2d(:,87))<br /> ;print("--------print(lon2d(:,87))----------------")<br /> ;print(lon2d(:,87))<br /> ;==============================================================<br /> end</p>
<p><br /></p>
<p>======================</p>
<p>I have another question,</p>
<p>the second question is a bout the Second part of my script.</p>
<p>the second part is a way that i use to find for example Nino3.4 region .</p>
<p>would you please tell me the right way to read the lat and lon of curvilinear grid,,and is there any method to find an exact region?</p>
<p>;=============================</p>
<p>I wait for your Help .</p>
<p>THank YOu in ADvance</p>
<p><br /></p>
<p> Sajede</p>
<p><br /></p>
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