Re: Fixed grid from ncep map plotting

From: Correia, James <james.correia_at_nyahnyahspammersnyahnyah>
Date: Thu, 30 Jul 2009 16:20:58 -0700

By directly, you just use gsn_csm_contour_map_ce ?
The data doesn't seem to line up very well with the map background.
Do I need to set gsnAddCyclic = False and also set tfDoNDCOverlay = False?
Thanks for any help.
jimmyc

Below is the netcdf header of the data:
netcdf test {
dimensions:
    Time = UNLIMITED ; // (62 currently)
    lat_98 = 94 ;
    lon_98 = 192 ;
variables:
    float PRATE_98_SFC_ave(Time, lat_98, lon_98) ;
        PRATE_98_SFC_ave:forecast_time_units = "hours" ;
        PRATE_98_SFC_ave:forecast_time = 0 ;
        PRATE_98_SFC_ave:parameter_number = 59 ;
        PRATE_98_SFC_ave:parameter_table_version = 2 ;
        PRATE_98_SFC_ave:grid_number = 98 ;
        PRATE_98_SFC_ave:level_indicator = 1 ;
        PRATE_98_SFC_ave:_FillValue = 1.e+20f ;
        PRATE_98_SFC_ave:units = "kg/m^2/s" ;
        PRATE_98_SFC_ave:long_name = "Precipitation rate" ;
        PRATE_98_SFC_ave:center = "US National Weather Service - NCEP (WMC)"
;

// global attributes:
        :creation_date = "Thu Jul 30 15:04:18 PDT 2009" ;
        :NCL_Version = "5.1.0" ;
        :system = "Linux nwiceb 2.6.18-92.1.13.el5lustre #1 SMP Fri Sep 26
09:45:16 PDT 2008 x86_64 x86_64 x86_64 GNU/Linux" ;
        :conventions = "None" ;
        :grib_source = "flxf00.grb" ;
        :title = "NCL: convert-GRIB-to-netCDF" ;
        :history = "Thu Jul 30 15:09:41 2009: ncrcat flxf00.nc flxf06.nc
flxf12.nc flxf18.nc flxf24.nc flxf30.nc flxf36.nc flxf42.nc flxf48.nc
flxf54.nc flxf60.nc flxf66.nc flxf72.nc flxf78.nc flxf84.nc flxf90.nc
flxf96.nc flxf102.nc flxf108.nc flxf114.nc flxf120.nc flxf126.nc flxf132.nc
flxf138.nc flxf144.nc flxf150.nc flxf156.nc flxf162.nc flxf168.nc flxf174.nc
flxf180.nc flxf186.nc flxf192.nc flxf198.nc flxf204.nc flxf210.nc flxf216.nc
flxf222.nc flxf228.nc flxf234.nc flxf240.nc flxf246.nc flxf252.nc flxf258.nc
flxf264.nc flxf270.nc flxf276.nc flxf282.nc flxf288.nc flxf294.nc flxf288.nc
flxf300.nc flxf306.nc flxf312.nc flxf318.nc flxf324.nc flxf330.nc flxf336.nc
flxf342.nc flxf348.nc flxf354.nc flxf360.nc test.nc" ;
        :nco_openmp_thread_number = 1 ;

On 7/30/09 4:03 PM, "Dennis Shea" <shea_at_ucar.edu> wrote:

> It is my feeling that you should be able to plot the fields directly.
>
> On import, the variables have the coordinate information
> appropriate for the variable. The 94x192 is a standard gaussian grid.
> Sould be trivial.
>
> D
>
> Correia, James wrote:
>> Hi All-
>> I am using ncl_convert2nc on a number of grib files from NCEPs CFS model. I
>> am not sure how to associate the data with the correct mapping. The data
>> appear to be of a similar form of the reanalysis data (2.5 by 2.5 degrees)
>> with 73 lat and 144 lon points for the pgb files, however the flx files have
>> a different lat lon grid (grid number = 98) with 94 lat and 192 lon.
>>
>> Anyone out there have any experience with this dataset to help me plot it
>> correctly on a map?
>> Thanks
>>
>>
>>
>> James Correia Jr., PhD
>> Climate Physics Group
>> Post. Doc.
>> Pacific Northwest National Lab
>>
>> "Wisdom. Strength. Courage. Generosity. Each of us are born with one of
>> these. It is up to us to find the other three inside of us."
>> -Into the West
>>
>>
>> _______________________________________________
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>>
>

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Received on Thu Jul 30 2009 - 17:20:58 MDT

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