Re: 19990127: grib to netcdf

Just wanted to let you know that I'm looking at the problem. It's appears
to be a  gribtonc coding problem, but I'm looking at ruc2.cdl
modification solution.


On Fri, 5 Feb 1999, Melissa Richey wrote:

> Hi Robb- 
> Thanks for your help with the gribtonc command line. 
> I was able to figure out what was wrong from the output and I
> have been getting pretty good results. I have however, another question 
> (or two) for
> you. We would like to degrib the variable "water vapor mixing ratio".
> In the ruc2.cdl file there is only a variable for "cloud water
> mixing ratio". In the official grib table, the grib code associated to
> "water vapor mixing ratio" is 185,

Where's the official grib table?  Wonder why it would be different then
the 388 Grib manual?

Robb...

 but in the grib document you 
> refer to in another one of your emails, it shows that associated
> to code 185 is "Turbulence SIGMET/AIRMET", which is the reserved_hybr
> variable in the ruc2.cdl file. All the other variables that I need
> degrib successfully, but when the decoder gets to the reserved_hybr 
> variable, in the log file it prints out 28 levels of
> 
> Feb 04 22:30:52 gribtonc[988]: oversize GRIB product
> 
> and then at the 29th level, it prints out the typical decoding
> output
> 
> Feb 04 22:30:52 gribtonc[988]: 149: wrote reserved_hybr(0,28,*,*) to ruc2.nc
> 
> for the rest of the 40 levels.
> 
> Why is this happening, and is there a variable for "water vapor mixing
> ratio"? I looked in param.c, but couldn't find anything like that.
> I am using a hybrid-coodinate ruc2 grib file.
> 
> Thanks!!!
> 
> Missy
> 
> 
> + 
> + On Thu, 28 Jan 1999, Melissa Richey wrote:
> + 
> + > 
> + > Hi Robb-
> + > 
> + > I have run gribtonc on a few files using the ruc2.cdl file. When
> + > I use ncdump on the new netcdf file, no variables have been 
> + > degribbed- the output is basically what was in the original cdl file.
> + 
> + Missy,
> + 
> + Is the raw grid file a ruc2 file?
> + 
> + 
> + Run gribtonc in verbose mode with the messages to the screen, ie
> + 
> + % gribtonc -vl - ruc2.cdl ruc2.nc < ruc2.raw
> + 
> + This should show the details.  If you send a sample of the output, I can
> + help get you started.
> + 
> + Also, you can use gribdump to show the contents of the raw grib file.
> + 
> + %gribdump grid.raw | more
> + 
> + 
> + The grib documentation is located at:
> + 
> + > The GRIB document (Office Note 388) dated
> + > March 10, 1998 in ftp://nic.fb4.noaa.gov/pub/doc/nws/nmc/gribed1.
> + >      
> + > It also located on : www.unidata.ucar.edu/staff/chiz/grib
> + 
> + 
> + Robb...
> + > 
> + > Do you have any suggestions as to what might need to be modified in
> + > the cdl file? I know this is a vague question but I am somewhat at a loss,
> + > which you have probably already figured from previous emails.
> + > 
> + > 
> + > Thanks-
> + > Missy
> + > 
> + 
> + 
> ===============================================================================
> + Robb Kambic                            Unidata Program Center
> + Software Engineer III                          Univ. Corp for Atmospheric 
> Research
> + address@hidden                 WWW: http://www.unidata.ucar.edu/
> + 
> ===============================================================================
> + 
> + 
> + 
> + 
> 

===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================