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-------- Original Message --------260 NOUS41 KWBC 091706
PNSWSH TECHNICAL IMPLEMENTATION NOTICE 08-41 NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC 106 PM EDT FRI MAY 09 2008TO: SUBSCRIBERS:
-FAMILY OF SERVICES -NOAA WEATHER WIRE SERVICE-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK OTHER NWS PARTNERS...AND NWS EMPLOYEES
FROM: KEVIN SCHRAB CHIEF... OBSERVING SERVICES DIVISION OFFICE OF CLIMATE WATER AND WEATHER SERVICES
SUBJECT: FY08 SCHEDULE RADIOSONDE REPLACEMENT SYSTEM /RRS/
IMPLEMENTATION WITH TERMINATION OF OPERATIONS OF
RADIOTHEODOLITE TRACKING /ART/ AND RADIO DIRECTION
FINDING RADIOSONDES
NWS CHARLESTON SOUTH CAROLINA AND ANCHORAGE ALASKA WILL CONVERT TO RRS TECHNOLOGY IN FY08. NWS WILL TERMINATE UPPER AIR OBSERVATIONS FROM RADIO DIRECTION FINDING RADIOSONDES AND AUTOMATED RADIOTHEODOLITE TRACKING AT THE TWO SITES LISTED BELOW ON OR ABOUT THE DATES INDICATED.
SID STATION NAME OUTAGE DATE 72208 CHARLESTON SC 12 JUN 2008 70273 ANCHORAGE AK 13 JUL 2008NWS 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 USED 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
NWS TECHNICAL IMPLEMENTATION NOTICES ARE ONLINE AT /USE LOWER CASE/:
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM
$$
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