20040212: Imagery, 12 km Eta-ADMIN NOTICE NOUS72 KNCF (fwd)

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: 20040212: Imagery, 12 km Eta-ADMIN NOTICE NOUS72 KNCF (fwd)
• From: Linda Miller <lmiller@xxxxxxxxxxxxxxxx>
• Date: Thu, 12 Feb 2004 06:38:56 -0700

649
NOUS72 KNCF 121249
ADMNCF
PLEASE PASS TO MIC, HIC, ESA, ITO, AND SOO
SUBJ:  COMPOSITE GOES IMAGERY  /   12KM RESOLUTION ETA MODEL
COMPOSITE IMAGERY
ON FEBRUARY 25 AT 1500Z, NCF AND NESDIS WILL MOVE COMPOSITE GOES IMAGERY TO
THE COMMUNICATION ROUTE CURRENTLY USED BY GOES SOUNDER PRODUCTS TO REACH
THE AWIPS SATELLITE BROADCAST NETWORK.  MOVING GMS/METEOSTAT/GOES IMAGERY
TO THIS MORE EFFICIENT ROUTE WILL ENSURE MORE RELIABLE DATA DELIVERY.  THE
HEADERS FOR THESE PRODUCTS ARE TICF01 KNES, TICF03 KNES, AND TICF04 KNES.
THEY ARE UPLINKED EVERY 3 HOURS, BEGINNING AT 0057 UTC.  THERE SHOULD BE NO
INTERRUPTION TO DATA FLOW AS A RESULT OF THIS TRANSITION.  IF THERE IS ANY
DIFFICULTY IN RECEIPT OR PROCESSING OF GMS/METEOSTAT/GOES COMPOSITE PRODUCTS
FOLLOWING THIS CHANGE, PLEASE CONTACT NCF AT (301) 713-9344.
12KM RESOLUTION ETA MODEL
ADDITIONAL 12KM RESOLUTION ETA MODEL GRIDS WILL BE ADDED TO THE SBN'S TG
CHANNEL ON FEBRUARY 18 AT APPROXIMATELY 1530Z.  THE NEW GRIDS EXTEND THE
RUN TIME OF THE EXISTING SBN ETA GRID SETS FROM 48 AND 60 HOURS, TO 84
HOURS.  THIS ADDITION WILL SIGNIFICANTLY INCREASE THE VOLUME OF DATA
ASSOCIATED WITH THIS PARTICULAR MODEL.   DETAILS ASSOCIATED WITH THIS
CHANGE ARE AS FOLLOWS: Excerpt from RC AB666

1. Grid 218 (12KM Eta 12 CONUS)

2. Surface Parameter set:
   2 M Temperature
   2 M Relative Humidity
   10 M u-wind
   10 M v-wind
   MSLP
   MSLP (Eta model reduction)
   Station Pressure
   Total Precipitation*
   CAPE
   CIN
   Precipitable Water
   Convective Precipitation*
   Listed Index
   Helicity
 * these parameters have one less time increment since cumulative from
time zero.

3. Forecast Intervals
   AWIPS currently gets Eta 12 grids out to 60 hours at 00 and 12 UTC, and
   out to 48 hours at 06 and 18 UTC (all four cycles output at three hour
intervals).     Sustaining this granularity out to 84 hours gives 29 total
"valid times," with the last     eight being new:

   00, 03, 06, 09, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42,
   45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, and 84 Hrs.

   Units are hours from model initialization time.

4. The four Eta 12 model run times are 00, 06, 12 & 18 UTC.
5. Data Volume: The increase from 21 to 29 valid times (* parameters ABOVE
increase from 20 to 28 valid times) increases the daily data volume by 176
MB (52.6%),   from 334 to 510 MB.
The NWS TG shall provide these products in very-near-real time to the
AWIPS NCF for uplink on the SBN's TG channel.




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