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-------- Original Message --------712 NOUS41 KWBC 151211
PNSWSH TECHNICAL IMPLEMENTATION NOTICE 07-11 NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC 711 AM EST THU FEB 15 2007TO: FAMILY OF SERVICES /FOS/ SUBSCRIBERS...NOAA WEATHER WIRE SERVICE /NWWS/ SUBSCRIBERS...EMERGENCY MANAGERS WEATHER INFORMATION NETWORK /EMWIN/ SUBSCRIBERS...OTHER NATIONAL WEATHER SERVICE /NWS/ CUSTOMERS AND PARTNERS...NWS EMPLOYEES
FROM: PAUL HIRSCHBERG
CHIEF...SCIENCE PLANS BRANCH
OFFICE OF SCIENCE AND TECHNOLOGY /OST/
SUBJECT: NCEP GLOBAL ENSEMBLE FORECAST SYSTEM EXPANDS FROM
14 TO 20 MEMBERS: EFFECTIVE MARCH 27 2007
EFFECTIVE TUESDAY MARCH 27 2007...BEGINNING WITH THE 1200 COORDINATED UNIVERSAL TIME /UTC/ MODEL CYCLE...NCEP WILL BEGIN PRODUCING SIX ADDITIONAL ENSEMBLE MEMBER GRIDDED DATA SETS PER CYCLE FROM THE NCEP GLOBAL ENSEMBLE FORECAST SYSTEM /GEFS/ OPERATIONAL JOB SUITE. THESE SIX NEW PERTURBATIONS WILL BE AVAILABLE WITH EACH OF THE FOUR DAILY CYCLES ADDING A TOTAL OF TWENTY-FOUR NEW PERTURBATIONS PER DAY. THESE DATA SETS WILL ONLY BE PROVIDED IN GRIB2 FORMAT AND WILL BE AVAILABLE ON THE NWS TELECOMMUNICATIONS GATEWAY /NWSTG/ PUBLIC FTP SERVER AT /USE LOWER CASE LETTERS/:
FTP://TGFTP.NWS.NOAA.GOV
AS WELL AS ON THE NCEP PUBLIC FTP SERVER AT /USE LOWER CASE
LETTERS/:
FTP://FTP.NCEP.NOAA.GOV
THE INCREASED MEMBERS WILL IMPROVE THE OVERALL PROBABILISTIC
FORECAST SKILL OF THE NCEP GEFS MODEL SUITE. HOWEVER...THE CHANGE
IS NOT INTENDED TO IMPROVE...BUT SHOULD NOT DEGRADE THE OVERALL
ENSEMBLE MEAN FORECAST SKILL.
IF YOU HAVE ANY QUESTIONS ABOUT THESE CHANGES...PLEASE CONTACT: JOE CARR NCEP CENTRAL OPERATIONS
CAMP SPRINGS MD
PHONE: 301-763-8000 X7709
EMAIL: JOE.CARR@xxxxxxxx
OR
JOHN WARD
NCEP CENTRAL OPERATIONS
CAMP SPRINGS MD
PHONE: 301-763-8000 X7185
EMAIL: JOHN.WARD@xxxxxxxx
THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE AVAILABLE AT THE URL LISTED BELOW /USE LOWER CASE LETTERS/:
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM
$$
--
Linda Miller - lmiller@xxxxxxxxxxxxxxxx
Community Services, Unidata
University Corporation for Atmospheric Research
P.O. Box 3000
Boulder, CO 80307-3000
303-497-8646 fax: 303-497-8690
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