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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. ---------- End Forwarded Message ----------
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