19991025: 32 km Eta on Web-ADMIN NOTICE NOUS40 KWBC (fwd)

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: 19991025: 32 km Eta on Web-ADMIN NOTICE NOUS40 KWBC (fwd)
• From: Linda Miller <lmiller@xxxxxxxxxxxxxxxx>
• Date: Mon, 25 Oct 1999 12:47:12 -0600

241 
NOUS40 KWBC 251652
FOS/NOAAPORT NOTICE NO. 1553     OCTOBER 25... 1999

ATTENTION   FAMILY OF SERVICES SUBSCRIBERS
             NOAAPORT USERS

SUBJECT     32 KM ETA RUNS AVAILABLE ON WEB

EMC HAS BEGUN TWICE DAILY REAL-TIME RUNS OF A FULL
RESOLUTION 32 KM  ETA MODEL PREDICTION AND ETA DATA
ASSIMILATION SYSTEM /EDAS/ ON THE DEVELOPMENTAL SGI
ORIGIN 2000 COMPUTER SYSTEM.  WITH THE INOPERABLE
STATUS OF THE CRAY C-90... RESULTING IN A DEGRADED ETA
/NO EDAS AND RUN AT 80 KM/ BACKUP VERSION RUN
OPERATIONALLY ON A CRAY J-90...   THE ENTIRE SUITE OF
CODES/SCRIPTS /PREPROCESSING... ANALYSIS... PREDICTION
MODEL... POSTPROCESSING/ WAS PORTED TO THE ORIGIN 2000.
THE PURPOSE OF THIS WORK IS TWO-FOLD

1/ CONTINUE TO PROVIDE THE HIGHEST QUALITY MESOSCALE
GUIDANCE TO THE FIELD /IF LOGISTICALLY POSSIBLE/.

2/ MAINTAIN THE FULLY CYCLED EDAS /UNBROKEN SINCE
JUNE 1998 ON THE CRAY C-90/.   THE CYCLED EDAS HAS LED TO
A REDUCTION IN MODEL BIASES OF SOIL MOISTURE... 2-M
SPECIFIC HUMIDITY... AND SKIN TEMPERATURE.  TO MAINTAIN
THESE POSITIVE BENEFITS IT IS CONSIDERED CRUCIAL TO
MAINTAIN THE SELF-CYCLING OF SOIL TEMPERATURE/MOISTURE
IN THE EDAS.

AFTER PRELIMINARY TESTING... THE ORIGIN 2000 EDAS/ETA-32
BEGAN REALTIME FORECASTS AT 0000 UTC 10/15/99.  THE ETA-32
FORECAST RUNS AT THE SAME SPEED AS IT DID ON THE CRAY
C-90 AND FINISHES 30-60 MINUTES BEFORE THE ETA-80 BACKUP
ON THE CRAY J-90. BECAUSE OF THIS RESULT... NCO PERSONNEL
ARE CURRENTLY WORKING ON A ROBUST INTERFACE WHICH
WILL SUBSTITUTE ORIGIN 2000 ETA-32 OUTPUT FOR ETA-80
OUTPUT IF IT IS AVAILABLE IN TIME.  IF THESE LOGISTICAL
PROBLEMS CAN BE OVERCOME... THEN ALL OUTPUT FILES FROM
THE ORIGIN 2000 ETA-32 WILL BE USED IN THE NCEP EARLY SUITE
INSTEAD OF THOSE FROM THE ETA-80.  THIS WOULD ELIMINATE
BOTH SOURCES OF CURRENT DEGRADATION OF THE EARLY ETA
RUNS AT 00Z AND 12Z... I.E. RESOLUTION AND LACK OF AN EDAS.
THE ONE EXCEPTION IS THE HOURLY FORECAST STATION
PROFILES IN BUFR.  THE BUFR SOUNDING OUTPUT FROM THE
ORIGIN 2000 RUN IS NOT PRODUCED DUE TO TIME CONSTRAINTS
AND MUST CONTINUE TO COME FROM THE J-90 BACKUP RUN
OF THE 80 KM ETA.

WEB SITES HAVE BEEN SETUP IN THE MEANTIME TO VIEW THE
32 KM RUNS... THEY CAN BE FOUND AT


CONUS
HTTP/COLON///SGI62.WWB.NOAA.GOV/COLON/8080/ETA32/

ALASKA
HTTP /COLON///SGI62.WWB.NOAA.GOV/COLON/8080/ETA32AK/

EAST PACIFIC
HTTP /COLON///SGI62.WWB.NOAA.GOV/COLON/8080/ETA32EPAC/

THESE EFFORTS HAVE BEEN LARGELY DUE TO ERIC ROGERS
WITH  HELP FORM MATT PYLE... DENNIS KEYSER... AND BILL
COLLINS.
END
NNNN
  

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