Talk:GEOS-5 ADAS Radiance Monitoring: Difference between revisions
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== SNPP GPS geolocation problem == | == SNPP GPS geolocation problem == | ||
* Starting on May 25 at ~22:30 UTC, the GPS on the S-NPP spacecraft toggled to invalid causing the geolocation of all observed data to be inaccurate and out of the mission specifications. Initially degradation was seen in VIIRS and science products were disabled at 17:00 UTC on May 28, 2024. S-NPP OMPS Limb Profile (LP) products disabled at 21:00 UTC on May 29th, 2024. Later due to increased degradation seen in all S-NPP science products, all S-NPP science products were disabled on PDA OPS at 16:00 UTC on May 30, 2024. [https://www.ospo.noaa.gov/data/messages/2024/05/MSG_20240530_1610.html NESDIS satellite message] | * Starting on May 25 at ~22:30 UTC, the GPS on the S-NPP spacecraft toggled to invalid causing the geolocation of all observed data to be inaccurate and out of the mission specifications. Initially degradation was seen in VIIRS and science products were disabled at 17:00 UTC on May 28, 2024. S-NPP OMPS Limb Profile (LP) products disabled at 21:00 UTC on May 29th, 2024. Later due to increased degradation seen in all S-NPP science products, all S-NPP science products were disabled on PDA OPS at 16:00 UTC on May 30, 2024. [https://www.ospo.noaa.gov/data/messages/2024/05/MSG_20240530_1610.html NESDIS satellite message] | ||
* There was another outage of SNPP instruments starting 24 July 2024. SNPP went into SAFE HOLD. Originally this was said to be due to a Command Data Processor (CDP) reset at 05:28 UTC 7/24 but then the message was corrected to say there were geolocation errors. Spacecraft recovery efforts were carried out and various instruments were placed in operational mode, but the data was held back from science customers until approved by the Cal/Val team. Data was unavailable in our input stream until 18z 7/30 2024. [https://www.ospo.noaa.gov/data/messages/2024/08/MSG_20240809_1426.html NESDIS satellite message] | |||