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Topic: GOES-9, 10, and 12 Single Chord Operations
Message Issued: December 17, 2003, 1810 UTC
Satellites Impacted: GOES-9, GOES-10, and GOES-12
Products Impacted: GOES-9, GOES-10, and GOES-12 Imager and Sounder Data
Date/Time of Initial Impact: December 30, 2003 1007 UTC
-----------------------------------------
Details:
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-12 single chord operations for the period
December 17, 2003 to January 12, 2004.
LUNAR INTRUSIONS
Dec. 17 2311 to 0203 UTC
Dec. 28 0844 to 1135 UTC
Dec. 30 1007 to 1258 UTC
Jan. 12 1939 to 2230 UTC
SOLAR INTRUSIONS
None
--------------------------
Following are times of GOES-10 single chord operations for the period
December 30, 2003 and January 12, 2004.
LUNAR INTRUSIONS
Dec. 30 1412 to 1702 UTC
Jan. 12 2341 to 0232 UTC
SOLAR INTRUSIONS
None
--------------------------
Following are times of GOES-9 single chord operations for the period
December 30, 2003.
LUNAR INTRUSIONS
Dec. 30 1859 to 2149 UTC
SOLAR INTRUSIONS
None
------------------------------------------
Contact Information:
Brian Hughes
Satellite Services Division
NOAA/NESDIS/OSDPD
301-763-8051 x106
brian.hughes@xxxxxxxx
See http://www.ssd.noaa.gov/PS/SATS/messages.html for this and other
satellite related messages.
See http://www.ssd.noaa.gov for full GOES scanning schedules.
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