Re: New NIDS products question...

Gilbert Sebenste wrote:
> 
> OK, I'll assume most of you have seen the announcement below. My question
> is, will these be on the NEXRAD feed? This will add a HUGE amount of data
> to it...11 more products!
> 
> *******************************************************************************
> Gilbert Sebenste                                                     ********
> Internet: gilbert@xxxxxxx    (My opinions only!)                     ******
> Staff Meteorologist, Northern Illinois University                      ****
> E-mail: sebenste@xxxxxxxxxxxxxxxxxxxxx                                 ***
> web: http://weather.admin.niu.edu                                      **
> Work phone: 815-753-5492                                                *
> *******************************************************************************

Hi Gilbert,

We plan to upgrade the ingest software to incorporate these products
under the NEXRAD (aka NNEXRAD) feed by the time they are available via
NOAAPORT.  

How the IDD handles this significant increase in volume will depend to a
large extent on how much data sites request.  We tried to structure the
NEXRAD topology (which is, as you know, separate from the "FOS"
topology) so that if a site requested more data than their connection
could handle it would only affect their own data reception. 

In practice, however, it's difficult to really separate things out this
way since clients and servers must cooperate (i.e., a server may get
stuck trying to feed a slow client), and all network traffic has to get
stuffed into a finite set of pipes.  But, so far this approach has
worked well - sites seem to be requesting a manageable number of NEXRAD
products and we've had no problems with NEXRAD products contributing to
unacceptable latencies.  

We'll probably need to ask the community to exercise similar restraint
with the new products.

Anne
-- 
***************************************************
Anne Wilson                     UCAR Unidata Program            
anne@xxxxxxxxxxxxxxxx                  P.O. Box 3000
                                  Boulder, CO  80307
----------------------------------------------------
Unidata WWW server       http://www.unidata.ucar.edu/
****************************************************

> 
> ---------- Forwarded message ----------
> Date: Fri, 13 Jul 2001 10:34:50 -0500
> From: LDM Data Software Account <ldm@xxxxxxxxxxxxxxxxxxxxx>
> To: sebenste@xxxxxxxxxxxxxxxxxxxxx, gizzi@xxxxxxxxxxxxxxxxxxxxx,
>      enelson@xxxxxxxxxxxxxxxxxxxxx
> Subject: NWS NOAAport message
> 
> 
> 750
> NOUS40 KWBC 131530
> FOS/NOAAPORT NOTICE NO. 1955 CORR         JULY 13... 2001
> 
> ATTENTION   FAMILY OF SERVICES SUBSCRIBERS/NOAAPORT USERS
> 
> SUBJECT  RADAR PRODUCTS TO BE ADDED TO NOAAPORT
> 
> THIS IS A FOLLOW UP TO FOS/NOAAPORT NOTICE NO. 1905C
> DATED APRIL 2... 2001.
> 
> BY THE END OF SEPTEMBER 2001... THE NATIONAL WEATHER
> SERVICE PLANS TO ADD 11 NEW DOPPLER WEATHER SURVEILLANCE
> RADAR /WSR-88D/ PRODUCTS TO THE NOAAPORT SATELLITE
> BROADCAST.  NINE OF THE 11 PRODUCTS ARE CURRENTLY INCLUDED
> IN THE SET OF RADAR PRODUCTS AVAILABLE FROM THE RADAR
> PRODUCT CENTRAL COLLECTION/DISTRIBUTION SERVICE /RPCCDS/.
> THE 56/SRM 2.40 AND 56/SRM 3.35 DEGREE ELEVATION PRODUCTS...
> AS NOTED BELOW... WILL BE ADDED TO THE RPCCDS AS.
> WELL AS NOAAPORT
> 
> WITH THE ADDITION OF THESE PRODUCTS TO NOAAPORT THEIR
> CURRENT WMO HEADERS /SDUS6I/ WILL CHANGE... AS NOTED IN
> THE LISTING BELOW.
> 
> RPG       NEW WMO
> HEADER    HEADER         PRODUCT
> 19/R      SDUS2I CCCC    BASE REFLECTIVITY - 124 NMI
>           N1RXXX         RANGE /1.45/1.50 DEGREES
>                          ELEVATION ANGLE/
> 19/R      SDUS2I CCCC    BASE REFLECTIVITY - 124 NMI
>           N2RXXX         RANGE /2.40/2.50 DEGREES
>                          ELEVATION ANGLE/
> 19/R      SDUS3I CCCC    BASE REFLECTIVITY - 124 NMI
>           N3RXXX         RANGE /3.35/3.50 DEGREES
>                          ELEVATION ANGLE/
> 20/R      SDUS7I CCCC    BASE REFLECTIVITY - 248 NMI
>           N0ZXXX         RANGE /0.50 DEGREE ELEVATION
>                          ANGLE/
> 27/V      SDUS7I CCCC    BASE RADIAL VELOCITY - 124 NMI
>           N1VXXX         RANGE /1.45/1.50 DEGREES
>                          ELEVATION ANGLE/
> 41/ET     SDUS7I CCCC    ECHO TOPS /ONLY AVAILABLE IN
>           NETXXX         PRECIP. MODE/
> 48/VWP    SDUS3I CCCC    VELOCITY AZIMUTH DISPLAY /VAD/
>           NVWXXX         WIND PROFILE
> 56/SRM    SDUS2I CCCC    STORM RELATIVE MEAN RADIAL
>           N1SXXX         VELOCITY /1.45 DEGREES
>                          ELEVATION ANGLE/ /ONLY
>                          AVAILABLE IN PRECIP. MODE/
> 56/SRM    SDUS2I CCCC    /NOTE ALSO AN ADDITION TO THE RPCCDS/
>           N2SXXX         STORM RELATIVE MEAN RADIAL VELOCITY
>                          /2.40 DEGREES ELEVATION ANGLE/ /ONLY
>                          AVAILABLE IN PRECIP. MODE/
> 56/SRM    SDUS3I CCCC    /NOTE  ALSO AN ADDITION TO
>           N3SXXX         THE RPCCDS/ STORM RELATIVE
>                          MEAN RADIAL VELOCITY /3.35
>                          DEGREES ELEVATION ANGLE/
>                          /ONLY AVAILABLE IN PRECIP.
>                          MODE/
> 78/OHP    SDUS3I CCCC    SURFACE RAINFALL ACCUMULATION
>           N1PXXX         - ONE HOUR RUNNING TOTAL
>                          /ONLY AVAILABLE IN PRECIP.
>                          MODE/
> 
> FOR ADDITIONAL INFORMATION CONTACT RONALD SMITH OR
> VICO BAER AT 301-713-0070 OR E-MAIL
> VICO.BAER/AT SYMBOL/NOAA.GOV AND RONALD.SMITH/AT SYMBOL/NOAA.GOV
> 
> FOR FOS/NOAAPORT QUESTIONS PLEASE CONTACT JULIE HAYES
> PHONE  301 713-0864 EXTENSION 120
> EMAIL  JULIE.HAYES/AT SYMBOL/NOAA.GOV
> 
> THIS INFORMATION IS ALSO POSTED ON THE NWS SYSTEMS OPERATIONS
> CENTER CHANGE NOTICES WEB PAGE. THE URL IS LISTED BELOW.
> 
> HTTP//WWW.NWS.NOAA.GOV/OSO/NOTICES/NOTICES2.SHTML
> 
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