Talk:GEOS-5 ADAS Radiance Monitoring: Difference between revisions
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== MetOp-C IASI anomaly 27-29 July 2021 == | == MetOp-C IASI anomaly 27-29 July 2021 == | ||
* '''30 July 2021''' After the scheduled maintenance on 27 July, the MetOp-C observations between 648 and 755 wavenumbers showed a shift in the mean bias of themeasurement for the first 24 hours by ~0.3 K then relaxation to near-normal biases. It was discovered that it was discovered that the operational settings of the MAS subsystem (offsets and gains) was not uploaded after the maintenance. Adjustment to the operational settings used before the power cycle was performed on Thursday the 29th and IASI-C was back in normal operations at around 2021-07-29 11:11 UTC. | * '''30 July 2021''' After the scheduled maintenance on 27 July, the MetOp-C observations between 648 and 755 wavenumbers showed a shift in the mean bias of themeasurement for the first 24 hours by ~0.3 K then relaxation to near-normal biases. It was discovered that it was discovered that the operational settings of the MAS subsystem (offsets and gains) was not uploaded after the maintenance. Adjustment to the operational settings used before the power cycle was performed on Thursday the 29th and IASI-C was back in normal operations at around 2021-07-29 11:11 UTC. | ||
== NPP outage 3-4 August 2021 == | |||
* On August 3 2021 12:46:45Z NPP entered a state where it is no longer mission pointing after engineering executed a planned re-enabling of the star trackers as part of the Star Catalog loads. Engineering started recovery efforts and all instruments were put in a safe mode. | |||
* Engineering was able to successfully return the SNPP spacecraft back to the nominal Mission pointing status at 22:28 UTC August 3. The instrument recovery efforts commenced at 14:07 UTC Aug 4, 2021. As of 14:17 UTC, ATMS, CERES, and OMPS instruments were recovered. As of 1600 UTC the VIIRS instrument was recovered. As of 19:13 UTC the CrIS instrument was recovered. | |||
* Before the distribution of SNPP science data can resume, Cal/Val teams will need to check and verify that all the instruments are meeting expected requirements. More notices will follow to inform users as each instrument returns to a nominal state. | |||