NOAA-20 Anomaly, 29 September 2023, 19:02 UTC

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kathys
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Joined: Tue Jun 22, 2010 4:51 pm

NOAA-20 Anomaly, 29 September 2023, 19:02 UTC

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Update #6, Issued 1 October 2023: NOAA-20 instrument activation activities were concluded with CrIS being placed in its operational mode at 22:35:11 UTC on September 30, 2023. As of Sunday, October 1, 2023, all ATMS and VIIRS products are approved for operational use and NDE/PDA subscriptions for those products will be enabled at 20:45 UTC, October 1, 2023. Direct Broadcast (DB) users can use the equivalent Community Satellite Processing Package (CSPP) LEO products for operations.

The CrIS instrument is showing nominal recovery, but Cal/Val teams will still need to conduct more analysis before all CrIS science products can be approved for operational use. CrIS is expected to have full recovery by October 4, 2023. The OMPS SDR and EDR teams will evaluate OMPS Limb Profile (LP), Nadir Profile (NP), and Nadir Mapper (NM) product quality after the OMPS SDR Look Up Tables (LUTs) are ingested into operations by late this week. CERES is still under evaluation by Cal/Val teams.

Update #5: Please note that J01 is referenced to NOAA-20. NOAA-20 instrument activation activities are on-going. ATMS was placed in operational mode at 03:52:43 UTC. CERES was placed in operational mode at 04:55:12 UTC. OMPS was placed in operational mode at 04:55:51 UTC. VIIRS was placed in operational mode at 17:26:48 UTC. CrIS is expected to be fully activated over the next several upcoming contacts. While the NOAA-20 High Rate Data (HRD) is enabled, Direct Broadcast (DB) users are advised that all NOAA-20 data is still undergoing evaluation by Cal/Val science teams and have not been cleared for operations.

NOAA-20 science data is now available through GRAVITE, CLASS and NDE I&T through which the Cal/Val teams are performing their full analysis. NOAA-20 PDA OPS science product subscriptions will be activated after each product is cleared for operations.

Update #4: NOAA-20 transitioned to Mission Point mode at 0321Z on September 30, 2023. The NOAA-20 spacecraft remains power positive and all communications elements are functional. Instrument activation is expected to occur over the next several contacts. Users are advised NOAA-20 data is undergoing further evaluation by Cal/Val science teams. Instrument activation times will be included on the next update to this notice. PDA OPS subscriptions for all NOAA-20 science products have been disabled as of 2310Z on September 29, 2023. NOAA-20 science product subscriptions will be activated after each product is cleared for operations.

Update #3: After further investigation, NOAA-20 entered a non-nominal state at 1902Z on September 29, 2023. Telemetry from subsequent contacts indicate a possible Spacecraft Command Processor reset and all instruments are confirmed to be in a safe state. Engineering will continue to restore all instruments and science data to an operational state once a plan forward has been determined. All missed data will not be recoverable (after the 1836Z Sept 29, 2023 observation time). The S-NPP and NOAA-21 satellites will continue to provide JPSS science data as the secondary and tertiary satellites, respectively.

Update #2: IDPS is not receiving any SMD data until further notice. Engineering is investigating.

Update #1: IDPS did not receive SMD data for the J01 McMurdo contact 30382. The cause for the J01 data outage is being investigated.
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