[ncl-talk] help
Dennis Shea
shea at ucar.edu
Sat Oct 25 06:31:04 MDT 2014
http://www.ncl.ucar.edu/Applications/ESMF.shtml
Example 6
On Sat, Oct 25, 2014 at 5:46 AM, 李嘉鹏 <lijpbasin at 126.com> wrote:
> Are you looking for functions to interpolate data from regional model to
> lat-lon grid? `rcm2grid` can do this, IIRC.
>
> 于 2014年10月25日 格林尼治标准时间+0800下午7时02分40秒, "張顧.煒Zane" <489645692 at qq.com> 写到:
> >Hi,
> >
> >
> > I have downloaded CMIP5 ocean temp. data
> >(tos_Omon_ACCESS1-0_historical_r1i1p1_185001-200512.nc)
> > but find that the horizontal grid is not regular grid used for GRADS
> >(see below)
> >
> >
> > Therefor I think I need to regrid the ocean temp. data from these
> >irregular grid points to the regular 1.0*1.0 grid.
> >
> >
> > I am asking if NCL can do the interpolation? If so, Could you point
> >out to me the key sentences used in NCL scripts?
> >
> >
> >
> >
> > Thanks,
> > Zane
> >
> >
> >--------------------
> >netcdf tos_Omon_ACCESS1-0_historical_r1i1p1_185001-200512.nc｛
> >
> >Dimensions: 5
> >
> > time = 1872;
> >
> > j = 300;
> >
> > i = 360;
> >
> > bnds = 2;
> >
> > vertices = 4;
> >
> >Global Attributes: 28
> >
> > : institution = "CSIRO (Commonwealth Scientific and Industrial
> >Research Organisation, Australia), and BOM (Bureau of Meteorology,
> >Australia)";
> >
> > : institute_id = "CSIRO-BOM";
> >
> > : experiment_id = "historical";
> >
> > : source = "ACCESS1-0 2011. Atmosphere: AGCM v1.0 (N96 grid-point,
> >1.875 degrees EW x approx 1.25 degree NS, 38 levels); ocean: NOAA/GFDL
> >MOM4p1 (nominal 1.0 degree EW x 1.0 degrees NS, tripolar north of 65N,
> >equatorial refinement to 1/3 degree from 10S to 10 N, cosine dependent
> >NS south of 25S, 50 levels); sea ice: CICE4.1 (nominal 1.0 degree EW x
> >1.0 degrees NS, tripolar north of 65N, equatorial refinement to 1/3
> >degree from 10S to 10 N, cosine dependent NS south of 25S); land:
> >MOSES2 (1.875 degree EW x 1.25 degree NS, 4 levels";
> >
> > : model_id = "ACCESS1-0";
> >
> > : forcing = "GHG, Oz, SA, Sl, Vl, BC, OC, (GHG = CO2, N2O, CH4,
> CFC11,
> >CFC12, CFC113, HCFC22, HFC125, HFC134a)";
> >
> > : parent_experiment_id = "piControl";
> >
> > : parent_experiment_rip = "r1i1p1";
> >
> > : branch_time = 109207;
> >
> > : contact = "The ACCESS wiki:
> >http://wiki.csiro.au/confluence/display/ACCESS/Home. Contact
> >Tony.Hirst at csiro.au regarding the ACCESS coupled climate model. Contact
> >Peter.Uhe at csiro.au regarding ACCESS coupled climate model CMIP5
> >datasets.";
> >
> > : history = "CMIP5 compliant file produced from raw ACCESS model
> >output using the ACCESS Post-Processor and CMOR2. 2012-01-15T21:24:32Z
> >CMOR rewrote data to comply with CF standards and CMIP5 requirements.";
> >
> > : references = "See
> >http://wiki.csiro.au/confluence/display/ACCESS/ACCESS+Publications";
> >
> > : initialization_method = 1;
> >
> > : physics_version = 1;
> >
> > : tracking_id = "0ae7d1af-8d73-4b79-b2e3-6e6ae10ce782";
> >
> > : version_number = "v20120115";
> >
> > : product = "output";
> >
> > : experiment = "historical";
> >
> > : frequency = "mon";
> >
> > : creation_date = "2012-01-15T21:24:32Z";
> >
> > : Conventions = "CF-1.4";
> >
> > : project_id = "CMIP5";
> >
> > : table_id = "Table Omon (27 April 2011)
> >694b38a3f68f18e58ba80230aa4746ea";
> >
> > : title = "ACCESS1-0 model output prepared for CMIP5 historical";
> >
> > : parent_experiment = "pre-industrial control";
> >
> > : modeling_realm = "ocean";
> >
> > : realization = 1;
> >
> > : cmor_version = "2.8.0";
> >
> >Variations: 9
> >
> > NC_DOUBLE time(time);
> >
> > time: bounds = "time_bnds";
> >
> > time: units = "days since 0001-01-01";
> >
> > time: calendar = "proleptic_gregorian";
> >
> > time: axis = "T";
> >
> > time: long_name = "time";
> >
> > time: standard_name = "time";
> >
> > NC_DOUBLE time_bnds(time,bnds);
> >
> > NC_INT j(j);
> >
> > j: units = "1";
> >
> > j: long_name = "cell index along second dimension";
> >
> > NC_INT i(i);
> >
> > i: units = "1";
> >
> > i: long_name = "cell index along first dimension";
> >
> > NC_FLOAT lat(j,i);
> >
> > lat: standard_name = "latitude";
> >
> > lat: long_name = "latitude coordinate";
> >
> > lat: units = "degrees_north";
> >
> > lat: bounds = "lat_vertices";
> >
> > NC_FLOAT lon(j,i);
> >
> > lon: standard_name = "longitude";
> >
> > lon: long_name = "longitude coordinate";
> >
> > lon: units = "degrees_east";
> >
> > lon: bounds = "lon_vertices";
> >
> > NC_FLOAT lat_vertices(j,i,vertices);
> >
> > lat_vertices: units = "degrees_north";
> >
> > NC_FLOAT lon_vertices(j,i,vertices);
> >
> > lon_vertices: units = "degrees_east";
> >
> > NC_FLOAT tos(time,j,i);
> >
> > tos: standard_name = "sea_surface_temperature";
> >
> > tos: long_name = "Sea Surface Temperature";
> >
> > tos: comment = ""this may differ from ""surface
> temperature"" in
> >regions of sea ice."";
> >
> > tos: units = "K";
> >
> > tos: cell_methods = "time: mean";
> >
> > tos: cell_measures = "area: areacello";
> >
> > tos: history = "2012-01-15T21:24:31Z altered by CMOR:
> replaced
> >missing value flag (-1e+20) with standard missing value (1e+20).";
> >
> > tos: missing_value = 1E+20;
> >
> > tos: _FillValue = 1E+20;
> >
> > tos: associated_files = "baseURL:
> >http://cmip-pcmdi.llnl.gov/CMIP5/dataLocation gridspecFile:
> >gridspec_ocean_fx_ACCESS1-0_historical_r0i0p0.nc areacello:
> >areacello_fx_ACCESS1-0_historical_r0i0p0.nc";
> >
> > tos: coordinates = "lat lon";
> >
> >
> >
> >Unlimited dimension: 0
> >
> >｝
> >
> >------------------------------------------------------------------------
> >
> >_______________________________________________
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>
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