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Update #2 Issued: April 25, 2024 1952 UTC: Engineering was able to successfully execute all planned activities to recover the S-NPP VIIRS instrument by 16:29:22z on Thursday, April 25, 2024. All S-NPP VIIRS products are now available for operational use. Day/Night Band (DNB) products may experience...

Date/Time of Initial Impact: April 24, 2024 1829Z: During Rev 64729 (AOS 18:29:46z), operations received multiple VIIRS YH alarms indicating S-NPP VIIRS experienced an anomaly and the instrument entered an anomalous state (single board computer lockup suspected). Engineering has started recovery st...

The NOAA-20 Maneuver scheduled time has changed to: April 22, 16:08 UTC Topic: N20 OverYaw Maneuver (OYM) scheduled for April 22, 2024 Date/Time Issued: April 22, 2024 1346Z Product(s) or Data Impacted: All N20 Sensor Data Date/Time of Initial Impact: April 22,2024 16:08:46 Date/Time of Expected End...

Topic: NOAA-20 OverYaw Maneuver (OYM) Scheduled for April 22, 2024 Date/Time Issued: April 19, 2024 1643Z Product(s) or Data Impacted: All NOAA-20 Sensor Data Date/Time of Initial Impact: April 22, 2024 19:31:46 Date/Time of Expected End: April 22 , 2024 21:49:00 Length of Outage: See Details. Deta...

Alejandro, Graeme is looking at this more closely and is working on a response.

Kathy

Alejandro, thank you for sending us this information. We are not sure what the problem is. - The sdr_luts.sh -v log file that you sent shows most of the files were downloaded successfully, but not all of them. - The curl command that you executed looks fine. So I think the next thing to do is to get...

Hello Alejandro, I do not know what is causing the failure of your sdr_luts.sh scripts. To help us investigate the cause, can you please try executing the script again using the "-v" option, and sending us the log results? For instance: sdr_luts.sh -v sdrluts_output.txt 2>&1 and send u...

Hello Alejandro. I hope that you are well. I can answer your question about the AIT failure and the log that shows ancillary data downloads failing. We have experienced an ancillary data outage starting late yesterday afternoon (15 April). I have just finished getting the files up to date. Please ch...

Hello Margad, There are programs that can read and write data files and save them as different formats. For example, the gdal command gdal_tranlsate can do this. You can find this and other utilities at https://gdal.org. The next release of Polar2Grid (Version 3.1) will support VIIRS Land Surface Re...

Update #4 Issued April 04, 2024 1604Z: On April 4th, 2024, the NOAA-20 propulsive maneuver was executed successfully with a verified burn that was an expended delta-v duration of 299.2 thruster seconds on 11:56:00Z-11:57:50Z to complete the rephasing campaign. 12:08:13z OMPS returned to fully opera...