This is the AIRS, AMSU-A, and HSB weekly operations status report for Friday, May 10, 2024 (the end of week 1149 of the Aqua mission).


AIRS:  The AIRS instrument remains healthy with all voltages, currents, and temperatures as expected.
AMSU-A1:  AMSU-A1 is healthy except for channels 4, 5, 6, and 7.
AMSU-A2:  AMSU-A2, which provided channels 1 and 2 of the AMSU-A suite, suffered a non-recoverable loss of power on September 24, 2016 and is no longer operational.
HSB:  HSB has been non-operational since February 2003 due to a scanner anomaly.


Instrument activities since previous report:

 An AIRS photometric calibration test ran on Tuesday, May 7.  Here is the timeline (UT):
   128/21:01:00  Photocal Lamp 3 On (S/C night)
   128/21:09:00  Photocal Lamps Off (S/C night)
   128/21:50:00  Photocal Lamp 3 On (S/C day)
   128/21:58:00  Photocal Lamps Off (S/C day)

Upcoming events:

1) An AIRS guard test is scheduled for Friday, May 17.  Here is the timeline (UT):
   138/21:01:00 AIRS Guard Test begins (AIRS in CHECKOUT mode)
   138/21:28:00 AIRS back in OPERATE mode

2) MODIS Lunar Calibration #234 is scheduled for Sunday, May 19.  Here is the timeline (UT):
   140/17:40:00  AIRS put into READY mode prior to Lunar Cal
   140/18:03:00  AIRS back in OPERATE mode

3) An AIRS OBC Float test is planned, although a date has not been set.
The test will last for 2 - 3 days.  A special gain table will be loaded to Aqua for use in the test.

4) Separately from the OBC Float gain table, a new Optimum (normal operations) gain & circumvention table will be uploaded.
The upload has not been scheduled yet.

Daily plots of noise levels for each AIRS channel are available on the AIRS webpage at https://airs.jpl.nasa.gov/mission/instrument-operations/.
A link there currently points to where the files are hosted at https://thunder.jpl.nasa.gov/nedt_trends/html/airs_channel_nedt_trends.html.
For each channel there are plots for the whole AIRS mission and for the last 2 months.
Going forward, weekly Ops status updates will be archived at the same webpage above,
and are hosted at https://airsteam.jpl.nasa.gov/report/latest and https://airsteam.jpl.nasa.gov/report/archive/.


William Mathews  - AIRS Instrument Operations
NASA / Jet Propulsion Laboratory