GI: Single Chord Operations 03/24/03 to 04/08/03 - Issued 03/24/03

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: GI: Single Chord Operations 03/24/03 to 04/08/03 - Issued 03/24/03
• From: Linda Miller <lmiller@xxxxxxxxxxxxxxxx>
• Date: Mon, 24 Mar 2003 08:03:17 -0700 (MST)

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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-8 single chord operations for the period
March 24 to April 8, 2003:

LUNAR INTRUSIONS

None

SOLAR INTRUSIONS

03/24    0237 to 0707 UTC
03/25    0237 to 0707 UTC
03/26    0237 to 0707 UTC
03/27    0237 to 0707 UTC
03/28    0237 to 0707 UTC
03/29    0237 to 0707 UTC
03/30    0237 to 0707 UTC
03/31    0237 to 0707 UTC
04/01    0237 to 0707 UTC
04/02    0237 to 0707 UTC
04/03    0237 to 0707 UTC
04/04    0237 to 0707 UTC
04/05    0237 to 0707 UTC
04/06    0237 to 0707 UTC
04/07    0237 to 0707 UTC
04/08    0237 to 0707 UTC



--------------------------

Following are times of GOES-10 single chord operations for the period
March 24 to April 8, 2003:

LUNAR INTRUSIONS

None

SOLAR INTRUSIONS

03/24    0713 to 1153 UTC
03/25    0713 to 1153 UTC
03/26    0713 to 1153 UTC
03/27    0713 to 1153 UTC
03/28    0713 to 1153 UTC
03/29    0713 to 1153 UTC
03/30    0713 to 1153 UTC
03/31    0713 to 1153 UTC
04/01    0713 to 1153 UTC
04/02    0713 to 1153 UTC
04/03    0713 to 1153 UTC
04/04    0713 to 1153 UTC
04/05    0713 to 1153 UTC
04/06    0713 to 1153 UTC
04/07    0713 to 1153 UTC
04/08    0713 to 1153 UTC


--------------------------

Following are times of GOES-12 single chord operations for the period
March 24 to April 8, 2003:

LUNAR INTRUSIONS

None

SOLAR INTRUSIONS

03/24    0312 to 0808 UTC
03/25    0312 to 0808 UTC
03/26    0312 to 0808 UTC
03/27    0312 to 0808 UTC
03/28    0312 to 0808 UTC
03/29    0312 to 0808 UTC
03/30    0312 to 0808 UTC
03/31    0312 to 0808 UTC
04/01    0312 to 0808 UTC
04/02    0312 to 0808 UTC
04/03    0312 to 0808 UTC
04/04    0312 to 0808 UTC
04/05    0312 to 0808 UTC
04/06    0312 to 0808 UTC
04/07    0312 to 0808 UTC
04/08    0312 to 0808 UTC


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