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http://weather.gov/datamgmt/notices.shtml 2005/07/13 DM 05-05.03 Add GFS Ensemble Grids, for West Pacific and Asia, to SBN/NOAAPort NOXX10 KWBC 181555 DATA MGT MESSAGE 05-05.03 TO AWIPS/NOAAPORT USERS.. FAMILY OF SERVICES/FOS/SUBSCRIBERS... EMERGENCY MANAGERS WEATHER INFORMATION NETWORK /EMWIN/ NATIONAL WEATHER SERVICE /NWS/ CUSTOMERS... WAFS USERS... GTS USERS... NWS FAX CHART USERS FROM RTH WASHINGTON DATA MANAGEMENT CHANGE NOTICE NO AC778 EFFECTIVE DATE JULY 13 2005 [AC778] ON THE ABOVE EFFECTIVE DATE THE FOLLOWING GFS ENSEMBLE GRIDS FOR WEST PACIFIC AND ASIA WILL BE ADDED TO THE AWIPS/NOAAPORT DATASTREAM. BRIAN GOCKEL [301] 713-0304 EXTENSION 158 IS THE COGNIZANT TECHNICAL INDIVIDUAL. HENRY ROBINSON [301] 713-1373 EXTENSION 173 IS THE DRG FOCAL POINT FOR THIS ITEM. THE FOLLOWING PRODUCTS WILL BE ADDED TO THE AWIPS/NOAAPORT DATASTREAM: WMO HEADER ---------- TEMPERATURE. SECOND HEADER CHARACTER IS T FOR THIS PARAMETER AND MAX/MIN TEMPERATURES BELOW. ALSO SEE NOTE 2.HTJA## KWBK [00 HR] HTJB## KWBK [06 HR] HTJC## KWBK [12 HR] HTJD## KWBK [18 HR] HTJE## KWBK [24 HR] HTJF## KWBK [30 HR] HTJG## KWBK [36 HR] HTJH## KWBK [42 HR] HTJI## KWBK [48 HR] HTJZ## KWBK [NOTE 9] HTJJ## KWBK [60 HR] HTJK## KWBK [72 HR] HTJL## KWBK [84 HR] HTJU## KWBK [90&192 HR] HTJM## KWBK [96 HR] HTJV## KWBK [102 HR] HTJN## KWBK [108 HR] HTJW## KWBK [114 HR] HTJO## KWBK [120 HR] HTJP## KWBK [132 HR] HTJQ## KWBK [144 HR] HTJR## KWBK [156 HR] HTJS## KWBK [168 HR] HTJT## KWBK [180 HR] GEOPOTENTIAL HEIGHT. SECOND HEADER CHARACTER IS H. SEE NOTE 3. HHJA## KWBK [00 HR] HHJB## KWBK [06 HR] HHJC## KWBK [12 HR] HHJD## KWBK [18 HR] HHJE## KWBK [24 HR] HHJF## KWBK [30 HR] HHJG## KWBK [36 HR] HHJH## KWBK [42 HR] HHJI## KWBK [48 HR] HHJZ## KWBK [NOTE 9] HHJJ## KWBK [60 HR] HHJK## KWBK [72 HR] HHJL## KWBK [84 HR] HHJU## KWBK [90&192 HR] HHJM## KWBK [96 HR] HHJV## KWBK [102 HR] HHJN## KWBK [108 HR] HHJW## KWBK [114 HR] HHJO## KWBK [120 HR] HHJP## KWBK [132 HR] HHJQ## KWBK [144 HR] HHJR## KWBK [156 HR] HHJS## KWBK [168 HR] HHJT## KWBK [180 HR] RELATIVE HUMIDITY. SECOND HEADER CHARACTER IS R. SEE NOTE 4. HRJA## KWBK [00 HR] HRJB## KWBK [06 HR] HRJC## KWBK [12 HR] HRJD## KWBK [18 HR] HRJE## KWBK [24 HR] HRJF## KWBK [30 HR] HRJG## KWBK [36 HR] HRJH## KWBK [42 HR] HRJI## KWBK [48 HR] HRJZ## KWBK [NOTE 9] HRJJ## KWBK [60 HR] HRJK## KWBK [72 HR] HRJL## KWBK [84 HR] HRJU## KWBK [90&192 HR] HRJM## KWBK [96 HR] HRJV## KWBK [102 HR] HRJN## KWBK [108 HR] HRJW## KWBK [114 HR] HRJO## KWBK [120 HR] HRJP## KWBK [132 HR] HRJQ## KWBK [144 HR] HRJR## KWBK [156 HR] HRJS## KWBK [168 HR] HRJT## KWBK [180 HR] U COMPONENT OF WIND. SECOND HEADER CHARACTER IS U. SEE NOTE 5. HUJA## KWBK [00 HR] HUJB## KWBK [06 HR] HUJC## KWBK [12 HR] HUJD## KWBK [18 HR] HUJE## KWBK [24 HR] HUJF## KWBK [30 HR] HUJG## KWBK [36 HR] HUJH## KWBK [42 HR] HUJI## KWBK [48 HR] HUJZ## KWBK [NOTE 9] HUJJ## KWBK [60 HR] HUJK## KWBK [72 HR] HUJL## KWBK [84 HR] HUJU## KWBK [90&192 HR] HUJM## KWBK [96 HR] HUJV## KWBK [102 HR] HUJN## KWBK [108 HR] HUJW## KWBK [114 HR] HUJO## KWBK [120 HR] HUJP## KWBK [132 HR] HUJQ## KWBK [144 HR] HUJR## KWBK [156 HR] HUJS## KWBK [168 HR] HUJT## KWBK [180 HR] V COMPONENT OF WIND. SECOND HEADER CHARACTER IS V. SEE NOTE 5. HVJA## KWBK [00 HR] HVJB## KWBK [06 HR] HVJC## KWBK [12 HR] HVJD## KWBK [18 HR] HVJE## KWBK [24 HR] HVJF## KWBK [30 HR] HVJG## KWBK [36 HR] HVJH## KWBK [42 HR] HVJI## KWBK [48 HR] HVJZ## KWBK [NOTE 9] HVJJ## KWBK [60 HR] HVJK## KWBK [72 HR] HVJL## KWBK [84 HR] HVJU## KWBK [90&192 HR] HVJM## KWBK [96 HR] HVJV## KWBK [102 HR] HVJN## KWBK [108 HR] HVJW## KWBK [114 HR] HVJO## KWBK [120 HR] HVJP## KWBK [132 HR] HVJQ## KWBK [144 HR] HVJR## KWBK [156 HR] HVJS## KWBK [168 HR] HVJT## KWBK [180 HR] TOTAL ACCUMULATED PRECIPITATION AT SURFACE. SECOND HEADER CHARACTER IS E.
NOTE: NO ACCUMULATED PRECIPITATION GRID AT INITIALIZATION TIME. ALSO SEE NOTE 6.HEJB## KWBK [06 HR] HEJC## KWBK [12 HR] HEJD## KWBK [18 HR] HEJE## KWBK [24 HR] HEJF## KWBK [30 HR] HEJG## KWBK [36 HR] HEJH## KWBK [42 HR] HEJI## KWBK [48 HR] HEJZ## KWBK [NOTE 9] HEJJ## KWBK [60 HR] HEJK## KWBK [72 HR] HEJL## KWBK [84 HR] HEJU## KWBK [90&192 HR] HEJM## KWBK [96 HR] HEJV## KWBK [102 HR] HEJN## KWBK [108 HR] HEJW## KWBK [114 HR] HEJO## KWBK [120 HR] HEJP## KWBK [132 HR] HEJQ## KWBK [144 HR] HEJR## KWBK [156 HR] HEJS## KWBK [168 HR] HEJT## KWBK [180 HR] MEAN SEA LEVEL PRESSURE. SECOND HEADER CHARACTER IS P. SEE NOTE 7. HPJA## KWBK [00 HR] HPJB## KWBK [06 HR] HPJC## KWBK [12 HR] HPJD## KWBK [18 HR] HPJE## KWBK [24 HR] HPJF## KWBK [30 HR] HPJG## KWBK [36 HR] HPJH## KWBK [42 HR] HPJI## KWBK [48 HR] HPJZ## KWBK [NOTE 9] HPJJ## KWBK [60 HR] HPJK## KWBK [72 HR] HPJL## KWBK [84 HR] HPJU## KWBK [90&192 HR] HPJM## KWBK [96 HR] HPJV## KWBK [102 HR] HPJN## KWBK [108 HR] HPJW## KWBK [114 HR] HPJO## KWBK [120 HR] HPJP## KWBK [132 HR] HPJQ## KWBK [144 HR] HPJR## KWBK [156 HR] HPJS## KWBK [168 HR] HPJT## KWBK [180 HR] MINIMUM TEMPERATURE. SECOND HEADER CHARACTER IS T FOR THIS AND OTHER
TEMPERATURE PARAMETERS. NOTE: NO MIN TEMPERATURE GRID AT INITIALIZATION TIME. SEE NOTE 8.HTJB## KWBK [06 HR] HTJC## KWBK [12 HR] HTJD## KWBK [18 HR] HTJE## KWBK [24 HR] HTJF## KWBK [30 HR] HTJG## KWBK [36 HR] HTJH## KWBK [42 HR] HTJI## KWBK [48 HR] HTJZ## KWBK [NOTE 9] HTJJ## KWBK [60 HR] HTJK## KWBK [72 HR] HTJL## KWBK [84 HR] HTJU## KWBK [90&192 HR] HTJM## KWBK [96 HR] HTJV## KWBK [102 HR] HTJN## KWBK [108 HR] HTJW## KWBK [114 HR] HTJO## KWBK [120 HR] HTJP## KWBK [132 HR] HTJQ## KWBK [144 HR] HTJR## KWBK [156 HR] HTJS## KWBK [168 HR] HTJT## KWBK [180 HR] MAXIMUM TEMPERATURE. SECOND HEADER CHARACTER IS T FOR THIS AND OTHER
TEMPERATURE PARAMETERS. NOTE: NO MAX TEMPERATURE GRID AT INITIALIZATION TIME. SEE NOTE 8.HTJB## KWBK [06 HR] HTJC## KWBK [12 HR] HTJD## KWBK [18 HR] HTJE## KWBK [24 HR] HTJF## KWBK [30 HR] HTJG## KWBK [36 HR] HTJH## KWBK [42 HR] HTJI## KWBK [48 HR] HTJZ## KWBK [NOTE 9] HTJJ## KWBK [60 HR] HTJK## KWBK [72 HR] HTJL## KWBK [84 HR] HTJU## KWBK [90&192 HR] HTJM## KWBK [96 HR] HTJV## KWBK [102 HR] HTJN## KWBK [108 HR] HTJW## KWBK [114 HR] HTJO## KWBK [120 HR] HTJP## KWBK [132 HR] HTJQ## KWBK [144 HR] HTJR## KWBK [156 HR] HTJS## KWBK [168 HR] HTJT## KWBK [180 HR] NOTES:
1. THE FREQUENCIES IN COLUMN 9 CORRESPOND TO EACH MODEL RUN. THERE WILL
BE TWO MODEL DISTRIBUTIONS PER DAY: 00UTC AND 12UTC. GENERALLY THE
FREQUENCIES WERE COMPUTED AS FOLLOWS:
[NUMBER OF LEVELS] X [NUMBER OF ENSEMBLE MEMBERS[TYPICALLY 11]]
X [NUMBER OF TIMESTEPS PER HEADER [TYPICALLY ONE BUT SOMETIMES
TWO OR SIX AS DESCRIBED IN NOTE 9].]
2. THE TEMPERATURE HEADERS CORRESPOND TO THE FOLLOWING FOUR LEVELS WITH
THE ASSOCIATED WMO HEADER II VALUES IN PARENTHESES: 2 METER[98] 850MB[85]
500MB[50] AND 250MB[25]. BECAUSE THERE ARE TYPICALLY 11 MEMBERS THE
FREQUENCY OF OCCURRENCE OF EACH HEADER IS GENERALLY 4 [LEVELS] TIMES 11
[MEMBERS] EQUALS 44.
3. THE GEOPOTENTIAL HEIGHT HEADERS CORRESPOND TO THE FOLLOWING FIVE LEVELS
WITH THE ASSOCIATED WMO HEADER II VALUES IN PARENTHESES: 1000MB[99] 850MB
[85] 700MB[70] 500MB[50] AND 250MB[25]. BECAUSE THERE ARE TYPICALLY 11
MEMBERS THE FREQUENCY OF OCCURRENCE OF EACH HEADER IS GENERALLY 5 [LEVELS]
TIMES 11 [MEMBERS] EQUALS 55.
4. THE RELATIVE HUMIDITY HEADERS CORRESPOND TO ONE LEVEL WITH THE
ASSOCIATED WMO HEADER II VALUE IN PARENTHESES: 700MB[70]. BECAUSE THERE
ARE TYPICALLY 11 MEMBERS THE FREQUENCY OF OCCURRENCE OF EACH HEADER IS
GENERALLY 11.
5. THE U AND V WIND COMPONENT HEADERS CORRESPOND TO THE FOLLOWING FOUR
LEVELS WITH THE ASSOCIATED WMO HEADER II VALUES IN PARENTHESES: 10
METER[98] 850MB[85] 500MB[50] AND 250MB[25]. BECAUSE THERE ARE TYPICALLY
11 MEMBERS THE FREQUENCY OF OCCURRENCE OF EACH HEADER IS GENERALLY 4
[LEVELS] TIMES 11 [MEMBERS] EQUALS 44.
6. THE TOTAL PRECIPITATION HEADERS CORRESPOND TO ONE LEVEL WITH THE
ASSOCIATED WMO HEADER II VALUE IN PARENTHESES: SURFACE[98]. BECAUSE
THERE ARE TYPICALLY 11 MEMBERS THE FREQUENCY OF OCCURRENCE OF EACH HEADER
IS GENERALLY 11.
7. THE MEAN SEA LEVEL PRESSURE HEADERS CORRESPOND TO ONE LEVEL WITH THE
ASSOCIATED WMO HEADER II VALUE IN PARENTHESES: MSL[89]. BECAUSE THERE
ARE TYPICALLY 11 MEMBERS THE FREQUENCY OF OCCURRENCE OF EACH HEADER IS
GENERALLY 11.
8. THE MINIMUM AND MAXIMUM TEMPERATURE PARAMETERS CORRESPOND TO ONE LEVEL
WITH THE ASSOCIATED WMO HEADER II VALUE IN PARENTHESES: 2 METER[98].
BECAUSE THERE ARE TYPICALLY 11 MEMBERS THE FREQUENCY OF OCCURRENCE OF EACH
HEADER IS GENERALLY 11.
9. HEADERS OF THE FORM HXXZXX KWBK CORRESPOND TO NINE FORECAST TIMES: 54 66
78 126 138 150 162 174 AND 186 HOURS. THUS THESE HEADERS OCCUR NINE TIMES
MORE FREQUENTLY THAN MOST HEADERS WHICH CORRESPOND TO ONLY ONE FORECAST TIME.
SIMILARLY THE HXXUXX KWBK HEADER CORRESPONDS TO FORECAST TIMES 90 & 192 HOURS
AND THEREFORE IT OCCURS TWICE AS OFTEN AS HEADERS WHICH CORRESPOND TO ONE
FORECAST TIME.
10. OS&T/SEC ESTIMATES THAT THE MEAN SIZE OF A GFS ENSEMBLE WAFS GRID IS
4800 BYTES. THIS RC REQUESTS THE ADDITION OF 7953 GRIDS PER MODEL RUN.
THEREFORE THE SIZE OF THE GFS ENSEMBLE GRID SET REQUESTED IN THIS RC IS
APPROXIMATELY 38.2 MBYTES PER MODEL RUN. THIS ESTIMATE IS BASED ON THE KNOWN
SIZES OF THE GFS ENSEMBLE GRIDS FOR THE 00-84 HOUR FORECAST TIME PERIOD
[ALREADY DISTRIBUTED ON THE SBN] AND THE ASSUMPTION THAT THE MEAN SIZE OF THE
NEW/REQUESTED GRIDS WILL BE COMPARABLE TO THOSE EXISTING GRIDS. THUS FOR THE
TWO DAILY RUNS [I.E. 00 & 12 UTC] THE TOTAL DAILY VOLUME WILL BE APPROXIMATELY
76.3 MBYTES.
FOR FOS/NOAAPORT AND NON-AWIPS CUSTOMERS - IF YOU HAVE ANY
QUESTIONS REGARDING ROUTING OR WOULD LIKE TO ADD THESE
PRODUCTS TO YOUR DATASTREAM PLEASE CONTACT.
Data Management
EMail nws.dm@xxxxxxxx
THIS INFORMATION IS ALSO POSTED ON THE NWS DATA MANAGEMENT CHANGE
NOTICES WEB PAGE. THE URL IS LISTED BELOW.
http://weather.gov/datamgmt/index.html
DATA MANAGEMENT
TELECOMMUNICATION OPERATIONS CENTER
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