Re: [gembud] NIDS file viewing and simple nowcasting

Hi Patrick..

You will very likely get a more robust response from Steve Chiswell or
someone who really knows what they are doing - but in the meantime - I
belive NIDS files should be ready to read by GEMPAK.

Try the gpmap program - set your map=1, garea=dset, proj="",
radfile=maple_cmp_fcst_200708082145_200708082215.mos, dev=xw|test|.6;.6
and run the program.  If it displays it works, if not, you may need to
convert this to a different format or use a differnet gempak program to
plot the data that I am unfamiliar with.

Regarding your second question - there are no tools to take a current
snapshot of the atmosphere in gridded form and "prog" it into the future -
even by simple advection.  GEMPAK is a display tool only - no dynamical or
even simple methods to step a current state of the atmosphere into the

Although - THAT would be cool.  You may want to consider using the
workstation WRF to help with this exercise.  This is a workstation version
of WRF.  See for details on the type of
system required, data inputs, and other info you will need to get off run
the model.


gembud-bounces@xxxxxxxxxxxxxxxx wrote on 08/16/2007 09:50:41 AM:

Hi everyone, I am brand new to this list.

If my questions have already been answered, please inform
me of where I can find a message list archive.  (I am very
new to GEMPAK)

How do I make NIDS files available for viewing within
NMAP.  I have the following information:

The filenames appear as:

The NIDS files are on a 2km grid in a Lambert Conformal
projection, with a grid size of 2560 by 1792. The centre
lat/lon is 39/-98. Output reference lat1 is 33 and output
reference lat2 is 45. The NIDS product code is 140.

Secondly, I have a gridded mosaic of Canadian radar data
which I would like to translate via the 700hPa GEM
regional model wind field.  My goal is to create a very
short term nowcast.  Are there any tools within GEMPAK
which would allow me to do this or has anyone else
attempted to perform a similar task?

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