-------- Original Message --------
305
NOUS41 KWBC 191645
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 10-24
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
1245 PM EDT WED MAY 19 2010
TO: SUBSCRIBERS:
-FAMILY OF SERVICES
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
OTHER NWS PARTNERS...AND NWS EMPLOYEES
FROM: KEVIN SCHRAB
CHIEF... OBSERVING SERVICES DIVISION
OFFICE OF CLIMATE WATER AND WEATHER SERVICES
SUBJECT: FOURTH QUARTER 2010 DATES FOR TERMINATION OF
RADIOTHEODOLITE TRACKING /ART/ AND RADIO
DIRECTION FINDING RADIOSONDES /RDF/ WITH
INSTALLATION OF RADIOSONDE REPLACEMENT
SYSTEMS /RRS/
FOUR UPPER AIR /UA/ SITES ARE SCHEDULED TO RECEIVE RRS
UPGRADES IN THE FOURTH QUARTER OF 2010. IF AN ADDITIONAL
SITE IS ADDED WE WILL ISSUE A TECHNICAL IMPLEMENTATION
NOTICE /TIN/ 30 DAYS IN ADVANCE OF THE OUTAGE.
SID STATION NAME OUTAGE DATES
91285 HILO HAWAII 2 JUL 2010
91165 LIHUE HAWAII 16 JUL 2010
70219 BETHEL ALASKA 13 AUG 2010
70308 ST PAUL ISLAND ALASKA 27 AUG 2010
THESE UA SITES MAY BE OUT OF SERVICE FOR AS LONG AS 10
DAYS. WHEN NWS UA OBSERVATIONS RESUME... THE RRS WILL BE
GATHERING METEOROLOGICAL DATA FROM GLOBAL POSITIONING
SYSTEM /GPS/ RADIOSONDES.
THE NWS DESCRIBES THE RRS RELEASE POINT LOCATION WITH THE
NATIONAL GEODETIC SURVEY /NGS/ OPUS SOLUTION. THIS IS A
DATUM COMBINATION THAT RELIES ON NORTH AMERICAN DATUM OF
1983 /NAD83/ FOR LATITUDE AND
LONGITUDE WHEREAS THE RELEASE POINT ELEVATION IS BASED ON
NORTH AMERICAN VERTICAL DATUM 1988 /NAVD88/ WITH THE
GEOID03 MODEL. BY CONTRAST THE GPS RADIOSONDE FLIGHT
INFORMATION OF LATITUDE AND LONGITUDE AND ALTITUDE WILL
RELY ON THE WORLD GEODETIC SYSTEM 1984 /WGS84/ STANDARD.
PARTS OF THE UPPER AIR CODED MESSAGES WILL BE SIGNIFICANTLY
LONGER WITH RRS CONVERSION. 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:
IVAN NAVARRO
NATIONAL WEATHER SERVICE / OPS11
1325 EAST WEST HIGHWAY
SILVER SPRING MARYLAND 20910
301-713-1841 EXT. 123
IVAN.NAVARRO@xxxxxxxx
NWS NATIONAL TECHNICAL IMPLEMENTATION NOTICES ARE ONLINE AT
/USE LOWERCASE/:
HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM
$$