-------- Original Message --------
937
NOUS41 KWBC 151937
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 10-35
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
340 PM EDT THU JULY 15 2010
TO: SUBSCRIBERS:
-FAMILY OF SERVICES
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
OTHER NWS PARTNERS...AND NWS EMPLOYEES
FROM: TIM MCCLUNG
CHIEF SCIENCE PLANS BRANCH
OFFICE OF SCIENCE AND TECHNOLOGY
SUBJECT: HORIZONTAL RESOLUTION CHANGES FOR CONUS RTMA ON NDGD
EFFECTIVE SEPTEMBER 14 2010.
ON TUESDAY SEPTEMBER 14 2010 AT 1200 COORDINATED UNIVERSAL TIME
/UTC/ THE NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION /NCEP/
WILL CHANGE THE HORIZONTAL RESOLUTION OF THE REAL TIME MESOSCALE
ANALYSIS /RTMA/ FOR THE CONTIGUOUS UNITED STATES /CONUS/ ON THE
NATIONAL DIGITAL GUIDANCE DATABASE /NDGD/.
THE RTMA IS A SET OF GRIDDED SURFACE ANALYSES AND SURFACE
ANALYSIS UNCERTAINLY FIELDS MADE AVAILABLE AT AN HOURLY TEMPORAL
FREQUENCY. THE CONUS RTMA ARE NOW AVAILABLE ON BOTH NOAAPORT AND
NDGD AT A HORIZONTAL RESOLUTION OF 5 KILOMETERS /KM/. THE CONUS
RTMA WILL CHANGE FROM A HORIZONTAL RESOLUTION OF 5 TO 2.5 KM ON
THE NDGD WITH THE EXCEPTION OF THE GOES EFFECTIVE CLOUD AMOUNT
WHICH WILL REMAIN AT A HORIZONTAL RESOLUTION OF 5 KM.
ONLY THE CONUS RTMA ON THE NDGD WILL CHANGE RESOLUTION...THE
CONUS RTMA AVAILABLE ON NOAAPORT WILL CONTINUE TO BE AVAILABLE
AT A HORIZONTAL RESOLUTION OF 5 KM. THE 2.5 KM RTMA PRODUCTS
WILL BE ADDED TO NOAAPORT IN THE COMING MONTHS. A SEPARATE
TECHNICAL IMPLEMENTATION NOTICE /TIN/ WILL BE ISSUED ANNOUNCING
THAT CHANGE.
THE GRIDS LISTED IN TABLE 1 BELOW WILL CHANGE TO A RESOLUTION OF
2.5 KM. THE GRIDS LISTED IN TABLE 2 WILL CONTINUE TO BE
PROVIDED AT A HORIZONTAL RESOLUTION OF 5 KM.
TABLE 1: FILENAMES FOR CONUS RTMA AT 2.5 KM ON NDGD
FILENAME RTMA PARAMETER
DS.TEMP.BIN TEMPERATURE
DS.UTEMP.BIN TEMPERATURE ANALYSIS UNCERTAINTY
DS.TD.BIN DEWPOINT TEMPERATURE
DS.UTD.BIN DEWPOINT TEMPERATURE UNCERTAINTY
DS.WSPD.BIN WIND SPEED
DS.UWSPD.BIN WIND SPEED ANALYSIS UNCERTAINTY
DS.WDIR.BIN WIND DIRECTION
DS.UWDIR.BIN WIND DIRECTION ANALYSIS UNCERTAINTY
DS.PRECIPA.BIN ACCUMULATED PRECIPITATION
DS.PRESS.BIN SURFACE PRESSURE ANALYSIS
DS.UPRESS.BIN SURFACE PRESSURE ANALYSIS UNCERTAINTY
DS.TERRAINH.BIN MODEL TERRAIN HEIGHT
TABLE 2: FILENAMES FOR CONUS RTMA AT 5 KM ON NDGD
FILENAME RTMA PARAMETER
DS.SKY.BIN GOES EFFECTIVE CLOUD AMOUNT
THE RTMA DATA FOR THE CONUS IS AVAILABLE FROM NDGD AT: /USE
LOWERCASE EXCEPT FOR SL...ST...DF...DC...GT AND AR/:
FTP://TGFTP.NWS.NOAA.GOV/SL.US008001/ST.EXPR/DF.GR2/DC.NDGD/
GT.RTMA/AR.CONUS
UNDER THE MAIN DIRECTORY FOR THE CONUS RTMA TWENTY-FOUR
SUBDIRECTORIES EXIST ON THE NDGD...ONE FOR EACH HOUR OF THE
DAY...RT.00...RT.01...RT.02...THROUGH RT.23.
EXPERIMENTAL 2.5KM RTMA DATA FOR THE CONUS IS CURRENTLY
AVAILABLE AT /USE LOWERCASE/:
FTP://FTP.EMC.NCEP.NOAA.GOV/MMB/MMBPLL/RTMA/HRES/PARALLEL
NOTE THAT THIS IS EXPERIMENTAL DATA AND MAY NOT BE CONSISTENTLY
AVAILABLE AT ALL TIMES.
THE RTMA DATA FOR CONUS AT 2.5 KM HORIZONTAL RESOLUTION WILL BE
MADE AVAILABLE ONCE THE PROCESSING IS RUNNING IN PARALLEL AT
NCEP IN EARLY AUGUST. THE DATA WILL BE AVAILABLE VIA HTTP AND
FTP ON THE NCEP SERVER AT: /USE LOWERCASE/
HTTP://WWW.FTP.NCEP.NOAA.GOV/DATA/NCCF/COM/RTMA2P5/PARA
OR
FTP://FTP.NCEP.NOAA.GOV/PUB/DATA/NCCF/COM/RTMA2P5/PARA
THERE ARE TWO FILES FOR EACH HOUR LOCATED ON THIS SERVER. FILES
WITH NAMES SUCH AS RTMA.00Z.2DVARANL_NDFD.GRB2 CONTAIN ALL OF
THE RTMA ANALYSIS FIELDS AND THE ASSOCIATED ERRORS. FILES WITH
NAMES SUCH AS RTMA.00Z.2DVARGES_NDFD.GRB2 CONTAIN THE FIRST
GUESS FIELDS USED BY THE RTMA.
NCEP WILL CONTINUE TO REFINE THE RTMA. USERS MAY PROVIDE
FEEDBACK ON THE EXPERIMENTAL RTMA PRODUCTS AT /USE LOWERCASE
EXCEPT FOR RTMA/:
HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=RTMA
FOR QUESTIONS REGARDING THE RTMA PLEASE CONTACT:
GEOFF DIMEGO
NCEP/ENVIRONMENTAL MODELING BRANCH
CAMP SPRINGS MD 20746
PHONE: 301-763-8000 x 7221
EMAIL: GEOFF.DIMEGO@xxxxxxxx
ALL NATIONAL TECHNICAL IMPLEMENTATION NOTICES ARE AVAILABLE
ONLINE AT /USE LOWERCASE/:
HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM
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