This is the AIRS, AMSU-A, and HSB weekly operations status report for Friday, April 19, 2024 (the end of week 1146 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 guard test ran on Wednesday, April 17.  Here is the timeline (UT):
   108/21:51:00 AIRS Guard Test begins (AIRS in CHECKOUT mode)
   108/22:19:00 AIRS back in OPERATE mode

MODIS Lunar Calibration #232 was executed Friday, April 19.  Here is the timeline (UT):
   110/23:14:00  AIRS put into READY mode prior to Lunar Cal
   110/23:35:00  AIRS back in OPERATE mode

Upcoming events:

1) 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.

2) 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