Update  #5: All NOAA-21 VIIRS science products are approved for operational use and the NDE/PDA subscriptions for these products will be enabled at 21:00 UTC, March 06, 2024. 


Direct Broadcast (DB) users can use the equivalent VIIRS Community Satellite Processing Package (CSPP) LEO products for operations.


Full assessment of NOAA-21 EDRs is still ongoing, users will be notified if there is any issue identified.



Update #4: All NOAA-21 OMPS Nadir Profiler (NP) SDRs and EDRs (V8Pro) and OMPS Nadir Mapper (NM) SDRs and EDRs (V8TOz & V8TOS) products are approved for operational use and the NDE/PDA subscriptions for these products will be enabled at 21:30 UTC, February 29, 2024. 


Direct Broadcast (DB) users can use the equivalent OMPS Community Satellite Processing Package (CSPP) LEO products for operations. 


NOAA-21 VIIRS cal/val evaluation continues and will need further coordination before it is ready for operational use.


Update #3: The NOAA-21 VIIRS outgassing activity was completed on February 28, 2024.


The NOAA-21 VIIRS instrument was placed in operational mode on February 27, 2024, at 21:00 UTC. OMPS was placed in operational mode on February 28, 2024, at 15:37 UTC. 


NDE/PDA requests for NOAA-21 VIIRS and OMPS products will be enabled once Cal/Val evaluation is completed. 


While NOAA-21 High Rate data (HRD) is available, Direct broadcast (DB) users are advised that this NOAA-21 science data is not yet cleared for operational use.


Correction to Update #2: The NOAA-21 VIIRS instrument was placed in activation mode on February 27 at 21:00 UTC. This science data is not considered valid until the instrument is returned to fully operational mode and has been assessed by Cal/Val teams. 


While this NOAA-21 VIIRS Science data is available through High Rate Data (HRD), Direct broadcast (DB) users are advised that this is not yet cleared for operational use.


Update #2: The NOAA-21 VIIRS instrument was placed in active mode on February 27 at 21:00 UTC. This science data is not considered valid until the instrument is returned to fully operational mode and has been assessed by Cal/Val teams. 


While this NOAA-21 VIIRS Science data is available through High Rate Data (HRD), Direct broadcast (DB) users are advised that this is not yet cleared for operational use.

Update #1:The NOAA-21 VIIRS Mid-Mission Outgassing Activity will commence on February 26, 2024, at 14:22 UTC.


Expected Science data outages:


OMPS: February 26, 2024, 14:22:02 UTC - February 28, 2024, 15:39:40 UTC

VIIRS: February 26, 2024, 16:05:21 UTC - February 28, 2024, 13:57:45 UTC


VIIRS Data will need to be validated after returning to nominal temperature levels.


If a Critical Weather Day is declared before the activity begins, it will be canceled. If a declaration is made after the activity starts, we will complete it.


Topic: NOAA-21 VIIRS Mid-Mission Outgassing Activity Scheduled from February 26, 2024 to February 29, 2024 


Date/Time Issued: March 06, 2024 2116z


Product(s) or Data Impacted: JPSS NOAA-21 VIIRS and OMPS Sensor Data


Date/Time of Initial Impact: February 26, 2024 00:00Z


Date/Time of expected End Time:  February 29, 2024 23:59Z


Duration:  4 Days 


Details/Specifics of change:  On February 26, 2024, NOAA-21 will start a Mid-Mission Outgassing Activity as a routine procedure before the satellite is declared as the primary JPSS spacecraft later this year. During this activity, VIIRS will be in Outgassing Mode, and OMPS will be in DECOM (decontamination mode). The end time of the activity is approximate, and an updated notice will be issued during the course of the activity.

 

 The following observatory systems will be affected on February 26, 2024:

 

February 26, 2024 00:00Z – February 29, 2024 23:59Z, OMPS will be in DECOM (decontamination mode) and science data will not be available


February 26, 2024 00:00Z – February 29, 2024, 23:59Z, VIIRS will be in Outgassing Mode, science data will not be available


Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880 24x7 or goes-r.product.engineering.group@noaa.gov during normal business hours

Web Site(s) for Applicable Information: N/A

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