I also beleive the convention for new models (ruc2) params is to use
numbers that are currently unused. The other models followed that
convention. It sure would of made the gribtonc changes much easier.
I wonder if NWS will assign water vapor mixing ratio another number
because they will probably want to use that parameter also?
On Mon, 8 Feb 1999, Melissa Richey wrote:
The official (?) Ruc-2 grib table can be found at
It states that NCEP needs to permanently assign that number, but
we have been able to access water vapor mixing ratio, using
the code number 185, in another program which degribs into
a format different from 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?
+ 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: oversize GRIB product
+ > and then at the 29th level, it prints out the typical decoding
+ > output
+ > Feb 04 22:30:52 gribtonc: 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
+ Robb Kambic Unidata Program Center
+ Software Engineer III Univ. Corp for Atmospheric Research
+ rkambic@xxxxxxxxxxxxxxxx WWW: http://www.unidata.ucar.edu/
Robb Kambic Unidata Program Center
Software Engineer III Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx WWW: http://www.unidata.ucar.edu/