NOAA GOES SATOPS Morning Report 9 November 2000
SATOPS MORNING REPORT – November 9, 2000
A severe solar radiation storm began last night, November 8, at 2350Z,
and has reached a level of S4 on the NOAA Space Weather Scales. The
storm, which currently ranks as the fourth largest since 1976, is expected
to peak over the course of the next several hours and then slowly diminish
over the next three to four days. Further information can be retrieved
at http://www.sec.noaa.gov/today.html. Some instrument “speckling”
(excitement of the instrument detectors due to collisions with high energy
particles) has been observed on GOES, but so far, no health and safety
concerns have been noted on POES/GOES/DMSP. Experience from a previous,
stronger, storm in July 2000, suggests that GOES INR performance may be
impacted over the next 24 hours. Engineers continue to analyze spacecraft
data to quantify potential effects in greater detail (attitude profiles,
radiometric performance, power performance, etc.).
POES
No change in the status of the POES spacecraft.
NOAA-16 operations nominal. SBUV OV testing continues.
A NOAA-15 solar array slew from -45 degrees to +53 degrees is tentatively
planned for next Tuesday, November 14 as part of the continuing AVHRR (attempted)
restoration efforts.
To address proposed HIRS commanding on NOAA-15, the ability to command
the filter wheel motor off and on in real-time within the time constraints
recommended by the HIRS tiger team was tested last night at 2223Z.
No Op commanding in real-time indicated that the shortest time between
commands utilizing this method is 3-4 seconds. Since this delay is
unacceptable, the commands will not be executed the test in real-time.
Engineers are currently looking at the potential of implementing this command
sequence via on-board command MACRO or via the stored command schedule
for potential testing early next week. A telecon to address this
topic will be held with NASA/ITT today. Finally, One second dwell
channel 261 (NHIRFMTI) was selected as requested for anomaly resolution
at 1722Z.
NOAA-15 rev 12940 / W at 1226Z on November 8: G2B noisy from spacecraft.
Received 92.6% of the data. 100% of the data received on rev 12941
/ W at 1407Z on November 8.
NOAA-14 rev 30200 / F at 1655Z on November 8: G1B noisy from spacecraft.
Received 84% of the data. 100% of the data received on rev 30201
/ W at 2000Z on November 8.
POES operations were nominal over the past 24 hours.
DMSP
No change in the status of the DMSP spacecraft.
OPS47 rev 29034 at POGO/B at 1435Z: Cat 1 loss (63.075 playback
sec/2523 spacecraft sec) declared due to negative commanding through POGO.
A reconfiguration to HULA/B recovered the data but the Cat 1 loss was called
due to the time lines being exceeded.
DMSP operations were nominal over the past 24 hours.
GOES
No change in the status of the GOES spacecraft.
At 1246Z on Wednesday, November 8, a GOES-8 frame break was observed
and attributed to the IPS memory buffer being full.
At 1547Z on Wednesday, November 8, a GOES-8 frame break was observed
and attributed to BER due to aircraft activity in the antenna field-of-view.
At 1746Z on Wednesday, November 8, a GOES-8 frame break was observed
and attributed to loss of high BER at CDA
Starting at 0100Z on November 9, the PM operator reported “spotting”
in the imagery (both GOES-8 and GOES-10); attributed to the solar storm
described above.
GOES-9 and GOES-11 remain in the Z-Axis Precession (ZAP) storage mode
at ~105 deg W.
GOES operations were nominal over the past 24 hours.
Questions or comments to twalsh@nesdis.noaa.gov
