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20010201: 20010131: Nexrad RCM's

Glenn,

The $GEMTBL/config/datatype.tbl entry in place for nmap is: 
RCMG         $MODEL                    YYYYMMDD_radar.gem

If you use YYYYMMDDHH_radar.gem as the file name in dcgrib, you
will be able to pull up the data in NMAP using the data pulldown
"data-->grid-->rcmg". 

Since there is just 1 RCM grid every 30 minutes, I place the entire day in
a single file. The parameter is RDSP1 on a level of 0, vertical coord NONE.

The grib data has VIP levels 0 through 6 as well as the 7 and 8 values
for the unidentified echos (just as the MDR did). Since the 7 and 8 values
make the plots look really ugly (eg, a ring around the radar limit boarders),
I used the NMAP restore function of slt(rdsp1,7) which only displays the values
less than 7. If you plot in garp, I'd suggest creating an fdf of the same.

Steve Chiswell
Unidata User Support




>From: "Glenn Rutledge" <address@hidden>
>Organization: NCDC
>Keywords: 200102011825.f11IPvX16309

>Sorry to bug you again Steve,
>Thanks for the RCM grid info.  I'm piping the HAXA00 grids to DCGRIB (no I've 
> not
>yet converted over to dcgrib2), and wonder what to label the grid.  My pqact e
> ntry
>is
>WMO    ^NOAAPORT\.NWSTG\.GRID\.HAXA00.KWBC\..*
>              PIPE    /npfos/noaaport/nawips/bin/sol/dcgrib -d
>/npraid/noaaport/nawips/logs/%Y%m%d_dcgrib.log
>               -g /npfos/noaaport/nawips/gempak/tables/grid
>              PACK /npfos/noaaport/nawipsdata/rcm/YYYYMMDDHH_rcm@@@.gem
>
>I guessed at the YYYYMMDDHH_rcm@@@.gem section.  For the projection (@), it's
>reading the hds section of grib (I think) and making it a grid#255.  How shoul
> d I
>most easily configure this entry to plot in GARP or NMAP.  Thx, Glenn
>
>Unidata Support wrote:
>
>> >From: "Glenn Rutledge" <address@hidden>
>> >Organization: NCDC
>> >Keywords: 200101311750.f0VHomX06324
>>
>> >Steve,
>> >Can n-awips plot the radar coded msg's?  I am creating files using the
>> >following pq_act entry:
>> >
>> >
>> >FSL5    ^SDUS4[0-6] .... ([0-3][0-9])([0-2][0-9])([0-5][0-9]).*/pRCM
>> >             FILE
>> >/npfos/noaaport/nawipsdata/nexrad/NIDS/rcm/(\1:yyyy)(\1:mm)\1\2_rcm.dat
>> >
>> >.. or do I need a script of some kind...
>> >Thanks, Glenn
>> >
>> >
>>
>> Glenn,
>>
>> You can use the program "GPRCM" to plot the rcm data:
>> http://www.unidata.ucar.edu/packages/gempak/examples/gprcm/
>>
>> I did provide an example of a script using gprcm on the web page above,
>> but you don't have to have a script. You can adjust the "dither" parameter
>> so that you can overlay the RCM data on satellite images.
>>
>> You can also view the grib "HAXA00 KWBC" which is the RCM mosaic in
>> any of the GRID programs (including NMAP).
>>
>> I provided a NMAP restore file for RCMG (RCM grib). It used the
>> gfunc = slt(rdsp1,7).
>>
>> Steve Chiswell
>> ****************************************************************************
>> Unidata User Support                                    UCAR Unidata Program
>> (303)497-8644                                                  P.O. Box 3000
>> address@hidden                                   Boulder, CO 80307
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>