[gembud] NIDS file viewing and simple nowcasting

[pmanousos at firstenergycorp.com]

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
future.

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 http://strc.comet.ucar.edu/wrf for details on the type of
system required, data inputs, and other info you will need to get off run
the model.

Pete

gembud-bounces at unidata.ucar.edu 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:
> maple_cmp_fcst_200708082145_200708082215.mos
>
> 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?
>