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-------- Original Message --------278 NOUS41 KWBC 161228
PNSWSHTECHNICAL IMPLEMENTATION NOTICE 07-55 NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC 830 AM EDT THU AUG 16 2007
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: OPERATION ASSESSMENT TEST /OAT/ RADIOSONDE REPLACEMENT SYSTEM/RRS/ AND FLIGHT OF RECORD ON AUGUST 17 2007...NWS GAYLORD...MICHIGAN...WILL TERMINATE UPPER AIR OBSERVATIONS USING THE RADIO DIRECTION FINDING RADIOSONDES AND TRACKING SYSTEM. THE UPPER AIR OPERATIONS WILL BE RESTORED USING THE RADIOSONDE REPLACEMENT SYSTEM WITH THE NEW GLOBAL POSITIONING SYTEM /GPS/ RADIOSONDES. THE SITE WILL BE OUT OF SERVICE UNTIL AUGUST 27 2007. ONCE RESTORED SOME PARTS OF THE UPPER AIR CODED MESSAGES WILL BE SIGNIFICANTLY LONGER. STARTING NO SOONER THAN THE 0000 COORDINATED UNIVERSAL TIME /UTC/ ON OR ABOUT AUGUST 27 2007...WITH THE IMPLEMENTATION OF THE RADIOSONDE REPLACEMENT SYSTEM AT GAYLORD...THERE WILL BE A CHANGE IN THE LENGTH OF CODED 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 TDD PARTS. THE NUMBER OF LEVELS IN THE TTAA... TTCC... PPBB... AND PPDD PARTS WILL BE RELATIVELY UNCHANGED. THESE CHANGES REFLECT UPDATED CODING PRACTICES AND HIGHTER RESOLUTION LEVEL SELECTION CRITERIA. THE MAXIMUM SIZE LIMITS OF THE PARTS OF THE CODED MESSAGES FOLLOW: RRS SITE COMPONENT COMMISSIONING PLAN SEPTEMBER 2005 13 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 THE VARIOUS PARTS OF THE MESSAGE WILL BE INCLUDED WITH EACH PART OF THE THERMODYNAMIC MESSAGE PARTS. FOR ADDITIONAL INFORMATION ON THE MESSAGE REQUIREMENTS PLEASE REFERENCE THE 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. 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 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 ONLINE AT /USE LOWER CASE LETTERS/: HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM $$ NNNN
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