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[IDV #HCU-216732]: wrf geography file not opened

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  • Subject: [IDV #HCU-216732]: wrf geography file not opened
  • Date: Thu, 12 May 2011 14:45:15 -0600
> thanks for your answer , the geogrid.exe is a utitlity in the WRF model
> which is run in the step of preparing the data to be ready for the model.
> the output of the geogrid.exe is the netcdf file i sent to you.
> i can open it with the NCL (Ncar Command Language)
> but the advantage  of the IDV that it can deal with the staggered data but
> NCL doesnot .


> if you wanna to know what is the geogrid.exe ,here is link in the WRF
> website .
> http://www.mmm.ucar.edu/wrf/users/wpsv2/wps.html
> 
> when i use the command ncdump i can view all the functions and the
> attributes in the file so why the IDV donnot , how can i  know if the file
> contain a continent data structure for the netcdf or not .
> thanks in advance

This nc file is really bad formatted, not followed any convention. The IDV is a 
visualization tools for the geo located dataset, it does require coordinate 
system in the dataset in order to display the data in the map view window. You 
can use the IDV to check the dataset. Another software is named "ToolsUI" is 
also very useful to check the coordinate system of the dataset.


Yuan
> 
> address@hidden> wrote:
> 
> > > Hello
> > > i am trying to view the files outputed from the WRF-NMM  programes
> > > i am  trying to plot the file which is the output of the programe
> > > geogrid.exe
> > > and the idv cannot open it .
> > > it seems that it doesnot recognize something about the file .
> > > i have attached the file
> > > thanks in advance
> > >
> >
> > Hi Ahmed,
> >    The attached file is not well formatted nc file, it does not follow any
> > convention. The very obvious issues here is:
> >  No Coordinate Axes were found, No CoordSysBuilder found , and No
> > 'Conventions' found.
> >
> > I don't know what is geogrid.exe, is it another application that change the
> > format of the WRF output? The IDV can read in the WRF output directly, and
> > WRF also has some post script to do the conversion of the file format.
> >
> > Yuan
> >
> >
> > > --
> > > ===============
> > > Ahmed Lasheen
> > > Junior researcher at Cairo Numerical Weather Prediction Center (CNWPC)
> > > Egyptian Meteorological Authority(EMA)
> > > Cairo,Egypt
> > > ===============
> > >
> > >
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: HCU-216732
> > Department: Support IDV
> > Priority: Normal
> > Status: Closed
> >
> >
> 
> 
> --
> ===============
> Ahmed Lasheen
> Junior researcher at Cairo Numerical Weather Prediction Center (CNWPC)
> Egyptian Meteorological Authority(EMA)
> Cairo,Egypt
> ===============
> 
> 


Ticket Details
===================
Ticket ID: HCU-216732
Department: Support IDV
Priority: Normal
Status: Closed