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20070417: Amended-SREF-Fwd: ADMIN NOTICE NOUS41 KWBC]

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-------- Original Message --------
832 NOUS41 KWBC 171348 
PNSWSH

TECHNICAL IMPLEMENTATION NOTICE 06-13...AMENDED
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
950 AM EDT TUE APR 17 2007

TO:       FAMILY OF SERVICES /FOS/ SUBSCRIBERS...NOAA WEATHER
         WIRE SERVICE /NWWS/ SUBSCRIBERS...EMERGENCY MANAGERS
WEATHER INFORMATION NETWORK /EMWIN/ SUBSCRIBERS... NOAAPORT SUBSCRIBERS...OTHER NATIONAL WEATHER SERVICE 
         /NWS/ CUSTOMERS AND PARTNERS...NWS EMPLOYEES

FROM:     PAUL HIRSCHBERG
         CHIEF...SCIENCE PLANS BRANCH
         OFFICE OF SCIENCE AND TECHNOLOGY
SUBJECT: AMENDED: ADDITION OF SHORT RANGE ENSEMBLE FORECAST /SREF/ SYSTEM PRODUCTS ON NOAAPORT: EFFECTIVE 
         APRIL 24 2007

REFER TO: TECHNICAL IMPLEMENTATION NOTICE /TIN/ 06-13
         TRANSMITTED ON MARCH 17 2006
AMENDED TO CHANGE THE EFFECTIVE DATE OF THE SREF NOAAPORT ACTIVATION FROM JUNE 6 2006 TO APRIL 24 2007. 
OTHER AMENDMENTS TO THE ORIGINAL TIN INCLUDE:

1.  HYPERLINKS TO THE SREF WMO HEADINGS HAVE BEEN ADDED.
2. THE NOAAPORT DIGITAL VIDEO BROADCAST PACKET ID /DVB PID/ UNDER WHICH THESE PRODUCTS WILL BE DISSEMINATED IS NOW SPECIFIED AS NWSTG2.
3. SREF MODEL RUN TIMES...DATA VOLUME ESTIMATES AND OTHER ROUTINE PRODUCT INFORMATION ARE NOW INCLUDED. 
THE AMENDED TIN IS BELOW.
EFFECTIVE TUESDAY APRIL 24 2007...BEGINNING WITH THE 0900 COORDINATED UNIVERSAL TIME /UTC/ RUN...THE NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION /NCEP/ WILL BEGIN THE DISSEMINATION OF SHORT RANGE ENSEMBLE FORECAST SYSTEM /SREF/ MODEL PRODUCTS VIA NOAAPORT. THESE ENSEMBLE PRODUCTS WILL BE DISSEMINATED IN GRIB2 FORMAT ON THE NOAAPORT NWSTG2 DVB PID.
NCEP PROVIDES FOUR SREF MODEL DISTRIBUTIONS PER DAY CORRESPONDING TO NOMINAL TIMES 0300...0900...1500 AND 2100 UTC. THE SREF GRIDS FROM EACH RUN WILL BE DISTRIBUTED VIA NOAAPORT APPROXIMATELY FIVE HOURS AFTER THE MODEL NOMINAL TIME. EACH DISTRIBUTION WILL CONSIST OF GRIB2 PRODUCTS FROM THREE GEOGRAPHICAL REGIONS: CONUS...ALASKA AND PACIFIC. THE DATA VOLUMES ASSOCIATED WITH EACH DISTRIBUTION WILL BE APPROXIMATELY AS FOLLOWS: 

REGION    DATA VOLUME PER DISTRIBUTION
CONUS 19 MEGABYTES 
ALASKA         14 MEGABYTES
PACIFIC        10 MEGABYTES
TOTAL          43 MEGABYTES
THE NOAAPORT STREAM OF SREF GRIDS WILL INCLUDE INITIALIZATION GRIDS PLUS THREE HOURLY FORECAST TIMES OUT TO 87 HOURS. WMO HEADINGS AND OTHER SREF INFORMATION CAN BE FOUND AT THE NCEP CENTRAL OPERATIONS WEBSITES LISTED BELOW /USE LOWER CASE LETTERS EXCEPT FOR DRG...NCO AND SREF/. 

CONUS WMO HEADINGS:

WWW.NCO.NCEP.NOAA.GOV/PMB/CHANGES/DRG-NCO-2006-002-SREF212.DOC

ALASKA WMO HEADINGS:

WWW.NCO.NCEP.NOAA.GOV/PMB/CHANGES/DRG-NCO-2006-003-SREF216.DOC

PACIFIC WMO HEADINGS:

WWW.NCO.NCEP.NOAA.GOV/PMB/CHANGES/DRG-NCO-2006-004-SREF243.DOC
THE EFFECTIVE DATE OF THIS CHANGE IS SOONER THAN SPECIFIED BY NWS POLICY. THE SHORTER ADVANCE LEAD TIME WAS CAUSED BY THE NECESSITY TO CONDUCT AN INTERNAL EVALUATION OF A TEST DATA STREAM PRIOR TO NOAAPORT ACTIVATION. THE SHORTER LEAD TIME WAS APPROVED BECAUSE IT IS EXPECTED THAT USERS WILL NOT HAVE TO MAKE MAJOR ADJUSTMENTS TO ACCOMMODATE THE CHANGES FROM THE ORIGINAL TIN. IF YOU HAVE QUESTIONS ABOUT THE CHANGES TO THIS TIN OR ABOUT THE NOAAPORT ACTIVATION OF THESE PRODUCTS...PLEASE CONTACT: 

   BRIAN GOCKEL
   NWS...OFFICE OF SCIENCE AND TECHNOLOGY
   SILVER SPRING MARYLAND
   PHONE: 301 713 0304 X158
   EMAIL: BRIAN.GOCKEL@xxxxxxxx

IF YOU HAVE QUESTIONS ABOUT THE SREF PRODUCTS...PLEASE CONTACT:

   BRENT GORDON
   NCEP...PRODUCTION MANAGEMENT BRANCH
   CAMP SPRINGS MARYLAND
   PHONE: 301 763 8000 X7193
   EMAIL: BRENT.GORDON@xxxxxxxx
THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE AVAILABLE ONLINE AT /USE LOWER CASE LETTERS/: 

   HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM

$$



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