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520
NOUS41 KWBC 221851
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 06-10
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
153 AM EST WED FEB 22 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 WEATHER SERVICES
SUBJECT: IMPLEMENTATION OF RADIOSONDE REPLACEMENT SYSTEM /RRS/
OPERATIONS WITH TERMINATION OF AUTOMATED
RADIOTHEODOLITE TRACKING /ART/ AND TERMINATION OF
RADIO DIRECTION FINDING RADIOSONDES
REFERENCE: TIN05-34 TRANSMITTED MAY 02 2005
THIS SPRING AND SUMMER NWS WILL TERMINATE UPPER AIR OBSERVATIONS
FROM RADIO DIRECTION FINDING RADIOSONDES AND ART AT THE 12 SITES
AND ON THE DATES INDICATED BELOW.
SIDSTATION NAMESONDE TYPE TEAR DOWN DATE
72214TALLAHASEE-FLVSL RS8006 MARCH 2006
72240LAKE CHARLES-LA VSL RS8020 MARCH 2006
72248SHREVEPORT-LAVSL RS8003 APRIL 2006
72265MIDLAND-TXVSL RS8017 APRIL 2006
72363AMARILLO-TXVSL RS8001 MAY 2006
72786SPOKANE-WASPN B215 MAY 2006
72681BOISE-IDVSL RS8029 MAY 2006
72376FLAGSTAFF-AZVSL RS8002 JUNE 2006
72489RENO-NVVSL RS8026 JUNE 2006
72662RAPID CITY-SDVSL RS8017 JULY 2006
72659ABERDEEN-SDVSL RS8031 JULY 2006
72764BISMARCK-NDSPN B214 AUGUST 2006
NWS UPPER AIR OBSERVATIONS WILL RESUME APPROXIMATELY TWO WEEKS
LATER AND USE THE RADIOSONDE REPLACEMENT SYSTEM /RRS/ WITH THE
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. 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 AT THE
FOLLOWING SITE UNDER THE NWS RADIOSONDE REPLACEMENT SYSTEM /USE
LOWERCASE LETTERS/.
HTTP://WWW.UA.NWS.NOAA.GOV
THE EFFECTIVE DATE OF THIS CHANGE IS SOONER THAN SPECIFIED BY
NWS INSTRUCTION 10-1805 BECAUSE THE RRS IMPLEMENTATION PLAN IS
DETERMINED IN PART BY CONTRACTUAL OBLIGATIONS. A DELAY OF
SCHEDULE WOULD BE COST PROHIBITIVE. BACKGROUND ON UPPER AIR
MESSAGE PARTS IS FOUND IN TIN05-34 ISSUED MAY 2 2005. THERE WILL
BE NO CHANGE IN MESSAGE FORMAT. NWS IS COORDINATING WITH
PARTNERS OVER MESSAGE LENGTH.
IF YOU HAVE QUESTIONS OR FEEDBACK... CONTACT:
CARL BOWER
NATIONAL WEATHER SERVICE
W/OS7X2
1325 EAST WEST HIGHWAY
SILVER SPRING MARYLAND 20910
PHONE: 301-713-0722 EXT. 145
E-MAIL: CARL.BOWER@xxxxxxxx
THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE AVAILABLE
AT /USE LOWER CASE LETTERS/:
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM
$$
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