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-------- Original Message --------989 NOUS41 KWBC 201805
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 08-43
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
205 PM EDT TUE MAY 20 2008
TO: SUBSCRIBERS:
-FAMILY OF SERVICES
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
OTHER NWS PARTNERS...USERS AND EMPLOYEES
FROM: JASON TUELL
SCIENCE PLANS BRANCH CHIEF
OFFICE OF SCIENCE AND TECHNOLOGY
SUBJECT: CHANGES TO OUTPUT FROM HIRES WINDOW MODEL:
EFFECTIVE AUGUST 5 2008
EFFECTIVE TUESDAY AUGUST 5 2008...WITH THE 1200 COORDINATED UNIVERSAL TIME /UTC/ RUN...THE NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION /NCEP/ WILL INTRODUCE SOME CHANGES TO THE OUTPUT FROM THE HIRES WINDOW /HIRESW/ MODEL. NCEP RUNS THE WEATHER RESEARCH AND FORECAST /WRF/ VERSIONS OF THE NON-HYDROSTATIC HYBRID VERTICAL COORDINATE MESOSCALE MODEL /NMM/ AND THE NATIONAL CENTER FOR ATMOSPHERIC RESEARCH /NCAR/ ADVANCED RESEARCH WRF /ARW/. THESE RUNS ARE MADE OVER 5 DOMAINS COVERING THE UNITED STATES AND PUERTO RICO. THE RUNS ARE NESTED INSIDE OF THE PARENT NORTH AMERICAN MESO MODEL /NAM/...OBTAINING INITIAL AND BOUNDARY CONDITIONS FROM THE NAM. BELOW IS THE RUN SCHEDULE AND THE ASSOCIATED DOMAINS:
0000 UTC: EASTERN US AND HAWAII 0600 UTC: WESTERN US AND PUERTO RICO 1200 UTC: EASTERN US AND HAWAII 1800 UTC: ALASKA AND PUERTO RICOTHESE HIRESW RUNS ARE CANCELLED ON THE NCEP OPERATIONAL SUPERCOMPUTER WHEN HURRICANE MODELS ARE RUNNING DURING THE TROPICAL SEASON BUT ARE RUN ON THE DEVELOPMENT SUPERCOMPUTER WHEN RESOURCES PERMIT. UPCOMING CHANGES: THE CHANGES LISTED BELOW WILL BE INCORPORATED INTO THE MODEL:
1. THE GENERATING PROCESS IDENTIFIER WITHIN THE HIRESW NMMOUTPUT WILL CHANGE FROM 84 TO 112. 2. THE GENERATING PROCESS IDENTIFIER WITHIN THE HIRESW ARW
OUTPUT WILL CHANGE FROM 84 TO 116.3. VERTICAL MOTION WILL BE PRODUCED AT THREE ADDITIONAL ISOBARIC LEVELS...200 250 AND 1000 HPA...IN THE OUTPUT OF BOTH THE HIRESW NMM AND HIRESW ARW FOR ALL DOMAINS. THESE MODEL CHANGES WILL IMPACT ALL DISSEMINATION ROUTES... INCLUDE THE NWS PUBLIC FTP SERVER AND THE NCEP PUBLIC FTP SERVER. THESE DATA SETS ARE NOT CURRENTLY AVAILABLE ON NOAAPORT.
A CONSISTENT PARALLEL FEED OF DATA WILL BECOME AVAILABLE ON THE NCEP FTP SERVER ON JUNE 17 2008 AT /USE LOWERCASE/:
FTP://FTP.NCEP.NOAA.GOV/PUB/DATA/NCCF/COM/NAM/PARAUSERS ARE ENCOURAGED TO ENSURE THEIR DECODERS ARE FLEXIBLE AND ARE ABLE TO ADEQUATELY HANDLE CHANGES IN CONTENT ORDER... PARAMETER FIELDS CHANGING ORDER...CHANGES IN THE SCALING FACTOR COMPONENT WITHIN THE PDS OF THE GRIB FILES AND ANY VOLUME CHANGES THAT MAY BE FORTHCOMING. THESE ELEMENTS MAY CHANGE WITH FUTURE NCEP MODEL IMPLEMENTATIONS. NCEP WILL MAKE EVERY ATTEMPT TO ALERT USERS TO THESE CHANGES BEFORE IMPLEMENTATIONS.
FOR QUESTIONS CONCERNING THESE CHANGES...PLEASE CONTACT:
GEOFF DIMEGO
NCEP...MESOSCALE MODELING BRANCH
CAMP SPRINGS MARYLAND
PHONE: 301 763 8000 X7221
EMAIL: GEOFF.DIMEGO@xxxxxxxx
OR
MATTHEW PYLE
NCEP...MESOSCALE MODELING BRANCH
CAMP SPRINGS MARYLAND
PHONE: 301 763 8000 X7242
EMAIL: MATTHEW.PYLE@xxxxxxxx
FOR QUESTIONS REGARDING THE DATAFLOW ASPECTS OF THESE DATA
SETS...PLEASE CONTACT THE NCEP/NCO/PMB DATAFLOW HELP DESK AT THE
EMAIL ADDRESS BELOW.
EMAIL: NCEP.PMB.DATAFLOW@xxxxxxxx
NWS TECHNICAL IMPLEMENTATION NOTICES ARE ONLINE AT
/USE LOWER CASE LETTERS/:
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM $$
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