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[20070530: radiosonde replacement system-Fwd: ADMIN NOTICE NOUS41 KWBC]

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

617 NOUS41 KWBC 301352
PNSWSH

TECHNICAL IMPLEMENTATION NOTICE 07-39
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
953 AM EDT WED MAY 30 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: JIM OSULLIVAN ACTING CHIEF... OBSERVING SERVICES DIVISION OFFICE OF CLIMATE WATER AND WEATHER SERVICES SUBJECT: FOURTH QUARTER FY07 SCHEDULE: RADIOSONDE REPLACEMENT SYSTEM /RRS/ IMPLEMENTATION WITH TERMINATION OF OPERATIONS OF RADIOTHEODOLITE TRACKING /ART/ AND RADIO DIRECTION FINDING RADIOSONDES
DURING THIS FOURTH QUARTER NWS WILL TERMINATE UPPER AIR 
OBSERVATIONS FROM RADIO DIRECTION FINDING RADIOSONDES AND 
AUTOMATED RADIOTHEODOLITE TRACKING AT THE SIX SITES LISTED BELOW 
ON OR ABOUT THE DATES INDICATED.
SID       STATION NAME        OUTAGE DATE

72768 GLASGOW MT 02 JUL 2007 74560 LINCOLN IL 16 JUL 2007 72440 SPRINGFIELD MO 30 JUL 2007 72634 GAYLORD MI 13 AUG 2007 72562 NORTH PLATTE NE 28 AUG 2007 72558 VALLEY NE 08 SEP 2007 NWS UPPER AIR OBSERVATIONS WILL RESUME APPROXIMATELY 2 WEEKS LATER. NWS WILL USE THE RRS WITH GLOBAL POSITIONING SYSTEM /GPS/ RADIOSONDES. EACH OF THESE SITES WILL BE OUT OF SERVICE FOR UP TO 2 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@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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