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Topic: GOES-9, 10, and 12 Single Chord Operations
Message Issued: January 9, 2004, 1345 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: January 12, 2004 1934 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
January 12 to February 3, 2004.
LUNAR INTRUSIONS
Jan. 12 1934 to 2225 UTC
Jan. 14 2105 to 2357 UTC
Jan. 25 0634 to 0925 UTC
SOLAR INTRUSIONS
Jan. 29 0237 to 0707 UTC
Jan. 30 0237 to 0707 UTC
Jan. 31 0237 to 0707 UTC
Feb. 01 0237 to 0707 UTC
Feb. 02 0237 to 0707 UTC
Feb. 03 0237 to 0707 UTC
--------------------------
Following are times of GOES-10 single chord operations for the period
January 12 to February 3, 2004.
LUNAR INTRUSIONS
Jan. 12 2341 to 0232 UTC
Jan. 15 0113 to 0405 UTC
Jan. 25 1040 to 1332 UTC
SOLAR INTRUSIONS
Jan. 28 0713 to 1153 UTC
Jan. 29 0713 to 1153 UTC
Jan. 30 0713 to 1153 UTC
Jan. 31 0713 to 1153 UTC
Feb. 01 0713 to 1153 UTC
Feb. 02 0713 to 1153 UTC
Feb. 03 0713 to 1153 UTC
--------------------------
Following are times of GOES-9 single chord operations for the period
January 15 to February 3, 2004.
LUNAR INTRUSIONS
Jan. 15 0602 to 0854 UTC
Jan. 25 1530 to 1821 UTC
Jan. 27 1656 to 1946 UTC
SOLAR INTRUSIONS
Jan. 28 1110 to 1550 UTC
Jan. 29 1110 to 1550 UTC
Jan. 30 1110 to 1550 UTC
Jan. 31 1110 to 1550 UTC
Feb. 01 1110 to 1550 UTC
Feb. 02 1110 to 1550 UTC
Feb. 03 1110 to 1550 UTC
------------------------------------------
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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