-------- 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@xxxxxxxx
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@xxxxxxxxxxxxxxxx
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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