[nws-changes] [20090610: radiosonde replacement system-Fwd: ADMIN NOTICE NOUS41 KWBC]

NOTE: The nws-changes mailing list is no longer active. The list archives are made available for historical reasons.


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

864 NOUS41 KWBC 101127
PNSWSH

TECHNICAL IMPLEMENTATION NOTICE 09-22 NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
727 AM EDT FRI JUN 10 2009
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 FY09 SCHEDULE DATES FOR TERMINATION 
          OF AUTOMATED RADIOTHEODOLITE TRACKING /ART/ AND RADIO  
          DIRECTION FINDING RADIOSONDES /RDF/ WITH INSTALLATION 
          OF RADIOSONDE REPLACEMENT SYSTEMS /RRS/
FIVE SITES IN ALASKA ARE SCHEDULED TO RECEIVE RRS UPGRADES IN 
FOURTH QUARTER 2009. EXPECT A 10 DAY OUTAGE OF UPPER-AIR 
OBSERVATIONS AT EACH SITE BEGINNING ON THE DATES LISTED BELOW.
SID       STATION NAME            OUTAGE DATES

70326     KING SALMON AK          10 JUL 2009
70200     NOME AK                 24 JUL 2009
70261     FAIRBANKS AK            07 AUG 2009
70361     YAKUTAT AK              21 AUG 2009
70398     ANNETTE AK              04 SEP 2009

EACH UPPER AIR SITE WILL BE OUT OF SERVICE FOR ABOUT 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 THE GEOCENTRIC INTERNATIONAL TERRESTRIAL REFERENCE FRAME (ITRF00) FOR LATITUDE AND LONGITUDE. 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/:
 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
301-713-1841 EXT. 123 DOMINIC.BOSCO@xxxxxxxx
NATIONAL TECHNICAL IMPLEMENTATION NOTICES ARE ONLINE AT  
/USE LOWERCASE/:
 HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM

$$
NNNN



  • 2009 messages navigation, sorted by:
    1. Thread
    2. Subject
    3. Author
    4. Date
    5. ↑ Table Of Contents
  • Search the nws-changes archives: