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? NOUS40KWBC 141155 FOS/NOAAPORT NOTICE NO. 1837 DECEMBER 14... 2000 ATTENTION FAMILY OF SERVICES SUBSCRIBERS/NOAAPORT USERS SUBJECT SINGLE CHORD OPERATIONS GOES SINGLE CHORD OPERATIONS... MADE NECESSARY BY LUNAR AND SOLAR INTRUSIONS AT THE EDGE OF THE EARTH DISK... IMPACT NAVIGATION AND REGISTRATION FOR SHORT PERIODS. USERS OF GOES GVAR DATA WILL SEE VARIABLE ERRORS DURING PERIODS OF SINGLE CHORD OPERATIONS AS NOTED BELOW. SINGLE CHORD OPERATIONS FOR THE BEVEL EFFECT ARE LISTED WHEN APPLICABLE. BEVEL EFFECT OPERATION IS INTENDED TO AVOID A SEASONAL SPACECRAFT POINTING PROBLEM WITH ALL GOES SPACECRAFT CAUSED BY THE SUN S LIGHT REFLECTING INTO THE EARTH SENSOR. FOLLOWING ARE TIMES OF GOES-8 SINGLE CHORD OPERATIONS FOR THE PERIOD DECEMBER 11... 2000 TO JANUARY 09... 2001. LUNAR INTRUSIONS 12/17 2123 TO 0015 UTC 01/01 0822 TO 1112 UTC 01/04 1034 TO 1326 UTC BEVEL NONE SOLAR INTRUSIONS NONE FOLLOWING ARE TIMES OF GOES-10 SINGLE CHORD OPERATIONS FOR THE PERIOD DECEMBER 11... 2000 TO JANUARY 09... 2001. LUNAR INTRUSIONS 12/18 0134 TO 0425 UTC 01/01 1229 TO 1519 UTC 01/04 1441 TO 1733 UTC BEVEL NONE SOLAR INTRUSIONS NONE THIS INFORMATION IS ALSO POSTED ON THE NWS SYSTEMS OPERATIONSCENTER CHANGE NOTICES WEB PAGE. THE URL IS LISTED BELOW. HTTP/COLON///WWW.NWS.NOAA.GOV/OSO/NOTICES/NOTICES.SHTML /LOWER CASE/ TOM RENKEVENS SATELLITE ANALYSIS BRANCH /SAB/ SATELLITE SERVICES DIVISION /SSD/ NOAA/NESDIS THOMAS.RENKEVENS/AT SYMBOL/NOAA.GOV
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