[20060801: radiosonde replacement system-Fwd: ADMIN NOTICE NOUS41 KWBC]

[Linda Miller]

-------- Original Message --------

049 
NOUS41 KWBC 011342
PNSWSH

TECHNICAL IMPLEMENTATION NOTICE 06-52
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
940 AM EDT TUE JUL 2 2006
         
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:  MIKE CAMPBELL       
  CHIEF ... OBSERVING SERVICES DIVISION 
  OFFICE OF CLIMATE, WATER, AND WEATHER SERVICES 

SUBJECT:  IMPLEMENTATION OF RADIOSONDE REPLACEMENT SYSTEM /RRS/
  OPERATIONS WITH TERMINATION OF AUTOMATED
  RADIOTHEODOLITE TRACKING /ART/ AND OF RADIO DIRECTION 
          FINDING RADIOSONDES

THIS FALL NWS WILL TERMINATE UPPER AIR OBSERVATIONS FROM RADIO 
DIRECTION FINDING RADIOSONDES AND AUTOMATED RADIOTHEODOLITE 
TRACKING AT 4 SITES LISTED BELOW ON THE DATES INDICATED.

SID       STATION NAME        SONDE TYPE     TEAR DOWN DATE

72672     RIVERTON-WY         VSL RS80       08 SEPTEMBER 2006
72476     GRAND JUNCTION-CO   VSL RS80       22 SEPTEMBER 2006
74389     GRAY-ME             VSL RS80       06 OCTOBER 2006
72528     BUFFALO-NY          VSL RS80       20 OCTOBER 2006

NWS UPPER AIR OBSERVATIONS WILL RESUME APPROXIMATELY 2 WEEKS 
LATER. NWS WILL USE THE RADIOSONDE REPLACEMENT SYSTEM /RRS/ WITH 
GLOBAL POSITIONING SYSTEM /GPS/ RADIOSONDES.  EACH OF THESE SITES 
WILL BE OUT OF SERVICE FOR UP TO TWO WEEKS. WHEN RESTORED PARTS 
OF THE UPPER AIR CODED MESSAGES WILL BE SIGNIFICANTLY LONGER.

NWS HAS COORDINATED WITH ITS PARTNERS ON THE LONGER LENGTH OF 
THESE MESSAGES.

THE FORMAT OF THE MESSAGES WILL BE THE SAME WMO FORMAT FOR CODED 
UPPER AIR MESSAGES IN USE WITH THE MICROART LEGACY SYSTEM. THE 
NUMBER OF LEVELS IN THE CODED MESSAGES WILL BE TWO TO THREE TIMES 
GREATER FOR THE TTBB AND TTDD. AS A RESULT TWO CATEGORIES OF 
AWIPS TEXT PRODUCTS WILL INCREASE IN SIZE: SGL AND ABV. THE 
NUMBER OF LEVELS IN THE TTAA...TTCC...PPBB...AND PPDD PARTS WILL 
BE RELATIVELY UNCHANGED. THESE CHANGES REFLECT UPDATED CODING 
PRACTICES AND HIGHER RESOLUTION LEVEL SELECTION CRITERIA. THE 
MAXIMUM SIZE LIMITS OF THE PARTS OF THE CODED MESSAGES ARE AS 
FOLLOWS: 

     TTAA:  15  LEVELS  
     TTCC:  10  LEVELS     
     TTBB: 135  LEVELS      
     TTDD:  40  LEVELS 
     PPBB:  40  LEVELS  
     PPDD:  40  LEVELS 

IN ADDITION THE 31313 MESSAGE INDICATOR ASSOCIATED WITH VARIOUS 
PARTS OF THE MESSAGE WILL BE INCLUDED WITH EACH PART OF THE 
THERMODYNAMIC MESSAGE PARTS. FOR ADDITIONAL INFORMATION ON THE 
MESSAGE REQUIREMENTS...REFERENCE WMO 306...MANUAL ON CODES... 
INTERNATIONAL CODES...VOLUME 1.1 PART A-ALPHANUMERIC CODES... 
AND WMO 306...MANUAL ON CODES...REGIONAL CODES AND NATIONAL 
CODING PRACTICES...VOLUME II. USERS CAN FIND INFORMATION ON THE 
LEVELS SELECTION CRITERIA USED IN NWS CODING SOFTWARE ONLINE AT  
/USE LOWERCASE LETTERS/:

     HTTP://WWW.UA.NWS.NOAA.GOV

IF YOU HAVE QUESTIONS OR FEEDBACK...PLEASE CONTACT:

     DOMINIC BOSCO
     NATIONAL WEATHER SERVICE / OPS11
     1325 EAST WEST HIGHWAY
     SILVER SPRING MARYLAND 20910
     PHONE: 301-713-1841 EXT. 123 
     E-MAIL: DOMINIC.BOSCO at NOAA.GOV

THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE AVAILABLE 
ONLINE AT /USE LOWER CASE LETTERS/:

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

$$


-- 
Linda Miller - lmiller at unidata.ucar.edu
Community Services, Unidata
University Corporation for Atmospheric Research
P.O. Box 3000
Boulder, CO 80307-3000
303-497-8646 fax: 303-497-8690 


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