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GOES ABI Calibration Events Log

This is a collection of events that, at the discretion of the GOES-R Calibration Working Group (CWG), have known or potential impact on L1b data quality. It is maintained by the CWG throughout the instrument mission life for ABI L1b users, producers, calibration specialists, managers, vendors, international partners, and members of the public interested in ABI calibration. For other ABI related events, please check the link below:

https://www.ospo.noaa.gov/Operations/messages.html

(Click column headings to sort; Type in the "Search" box to query table contents.)

Updated: 3/27/2025

GOES 16
GOES 17
GOES 18
GOES 19 Preliminary, Non-Operational Data

Event	StartDate	EndDate	Description
Degraded B13 and B09 radiance between 17-5 UTC	03/24/2025		At the new station location of 75.49W; GOES-16 B13 and B09 radiance are slightly degraded by up to about 0.1K @ 300K between 17 - 05 UTC daily. Weak striping may be observed in B09 images during this period. This degradation is attributed to a large longitudinal offset of the spacecraft from its nominal position at 75.0W. Detailed analyses and reports are available in the CWG meeting on 03/12/2025
Station nudged from 75.2W to 75.49W	03/10/2025	03/24/2025	GOES-16 station was relocated from 75.2W to 75.49W between 03/10/2025 and 03/24/2025 to make space for GOES-19. During this drift period
VNIR channel gain update	02/24/2025	02/24/2025	The post-processed Human-In-The-Loop (HITL) gains recommended by CWG were deployed for G16 VNIR channels at 17:52z on 02/24/2025. This update resulted in a channel-dependent radiance change of ~0.0 - 0.13%; with larger changes observed in the shorter wavelength channels. Detailed information about this update can be found in the CWG meeting on 02/26/2025 and ADR1535. Keyword: RAD
B10 striping and BDS update	02/15/25	02/26/25	Striping was seen in the products of B10 beginning on 02/15/25 at 1841Z due to anomalous performance from the detector on row #94. The detector on row 94 was switched with a BDS map update on 02/26/25 at 2029Z which resolved the striping. See details in the CWG presentations on 02/21/25 and 03/05/25. Keyword: RAD
VNIR channel gain update	01/24/2025	01/24/2025	The post-processed Human-In-The-Loop (HITL) gains recommended by CWG were deployed for G16 VNIR channels at 15:54z on 01/24/2025. This update resulted in a channel-dependent radiance change of ~0.0 - 0.13%; with larger changes observed in the shorter wavelength channels. Detailed information about this update can be found in the CWG meeting on 01/24/2025 and ADR1535. Keyword: RAD
Erroneous VNIR gain	01/09/2025	01/09/2025	Erroneous gain values for G16 VNIR bands were used during the period from 2025-01-09 2120Z to 2025-01-10 1420Z; resulting in abnormal radiance during this period. The correct gains were re-applied and imagery returned to nominal. The cause of the degraded data was a misconfiguration after system maintenance. Keyword: RAD
VNIR channel gain update	12/30/2024	12/30/2024	The post-processed Human-In-The-Loop (HITL) gains recommended by CWG were deployed for G16 VNIR channels at 20:47z on 12/30/2024. This update resulted in a channel-dependent radiance change of ~0.0 - 0.14%; with larger changes observed in the shorter wavelength channels. Detailed information about this update can be found in the CWG meeting on 01/03/2025 and ADR1529. Keyword: RAD
VNIR channel gain update	12/04/2024	12/04/2024	The post-processed Human-In-The-Loop (HITL) gains (Information about this process https://www.ospo.noaa.gov/data/messages/2024/03/MSG_20240327_1924.html ) recommended by CWG were deployed for G16 VNIR channels at 16:00z on 12/04/2024. This update resulted in a channel-dependent radiance change of ~0.0 - 0.11%; with larger changes observed in the shorter wavelength channels. Detailed information about this update can be found in the CWG meeting on 12/05/2024 and ADR1522. Keyword: RAD
VNIR channel gain update	10/31/2024	10/31/2024	The post-processed Human-In-The-Loop (HITL) gains recommended by CWG were deployed for G16 VNIR channels at 19:07z on 10/31/2024. This update resulted in a channel-dependent radiance change of ~0.0 - 0.13%; with larger changes observed in the shorter wavelength channels. Information about this process can be found in the OSPO notification https://www.ospo.noaa.gov/data/messages/2024/03/MSG_20240327_1924.html.Detailed information about this update can be found in the CWG meeting on 11/01/2024 and ADR1506. Keyword: RAD
VNIR channel gain update	10/16/2024	10/16/2024	The post-processed Human-In-The-Loop (HITL) gains recommended by CWG were deployed for G16 VNIR channels at 17:58z on 10/16/2024. This update resulted in a channel-dependent radiance change of ~0.0 - 0.12%; with larger changes observed in the shorter wavelength channels. Information about this process can be found in the OSPO notification https://www.ospo.noaa.gov/data/messages/2024/03/MSG_20240327_1924.html.Detailed information about this update can be found in the CWG meeting on 10/18/2024 and ADR1497. Keyword: RAD
VNIR channel gain update	09/05/2024	09/05/2024	The post-processed Human-In-The-Loop (HITL) gains recommended by CWG were deployed for G16 VNIR channels at 2117z on 09/05/2024. This update resulted in a channel-dependent radiance change of ~0.0 - 0.14%; with larger changes observed in the shorter wavelength channels. Information about this process can be found in the OSPO notification https://www.ospo.noaa.gov/data/messages/2024/03/MSG_20240327_1924.html. Detailed information about this update can be found in the CWG meeting on 09/07/2024 and ADR1483. Keyword: RAD
VNIR channel gain update	08/15/2024	08/15/2024	The post-processed Human-In-The-Loop (HITL) gains recommended by CWG were deployed for G16 VNIR channels at 1827z on 08/15/2024. This update resulted in a channel-dependent radiance change of ~0.0 - 0.12%; with larger changes observed in the shorter wavelength channels. Information about this process can be found in the OSPO notification https://www.ospo.noaa.gov/data/messages/2024/03/MSG_20240327_1924.html. Detailed information about this update can be found in the CWG meeting on 08/16/2024 and ADR1477. Keyword: RAD
Weak to moderate stripes caused by lunar intrusion	07/25/2024	07/25/2024	The Moon appeared in the spaclook scenes for G16 B07/08/16 at ~21:40 UTC on 07/25/2024. It caused a GEO-GEO variation of about 0.1K for B16 and striping may be observed in the B07/08/16 FD images. Details in the CWG meeting on 07/31/2024. Keyword: RAD.
VNIR channel gain update	07/24/2024	07/24/2024	The post-processed Human-In-The-Loop (HITL) gains recommended by CWG were deployed for G16 VNIR channels at 1901z on 07/24/2024. This update resulted in a channel-dependent radiance change of ~0.0 - 0.13%; with larger changes observed in the shorter wavelength channels. Information about this process can be found in the OSPO notification https://www.ospo.noaa.gov/data/messages/2024/03/MSG_20240327_1924.html. Detailed information about this update can be found in the CWG meeting on 07/10/2024 and ADR1471. Keyword: RAD
VNIR channel gain update	06/20/2024	06/20/2024	The post-processed Human-In-The-Loop (HITL) gains recommended by CWG were deployed for G16 VNIR channels at 1555Z on 06/20/2024. This update resulted in a channel-dependent radiance change of ~0.0 - 0.11%; with larger changes observed in the shorter wavelength channels. Information about this process can be found in the OSPO notification https://www.ospo.noaa.gov/data/messages/2024/03/MSG_20240327_1924.html. Detailed information about this update can be found in the CWG meeting on 06/12/2024. Keyword: RAD
VNIR channel gain update	05/30/2024	05/30/2024	The post-processed Human-In-The-Loop (HITL) gains recommended by CWG were deployed for G16 VNIR channels at 1900Z on 05/30/2024. This update resulted in a channel-dependent radiance change of ~0.0 - 0.1%; with larger changes observed in the shorter wavelength channels. Information about this process can be found in the OSPO notification https://www.ospo.noaa.gov/data/messages/2024/03/MSG_20240327_1924.html. Detailed information about this update can be found in the CWG meeting on 05/22 and 05/29/2024. Keyword: RAD
Cryocooler Electronic Anomaly	05/29/2024	05/29/2024	The GOES-16 ABI experienced the operating cryocooler anomaly between 20:06 UTC and 22:10 UTC on 05/29/2024. The anomaly resulted in abnormal radiance and data gap during this time period. Impact on the IR calibration is channel-dependent. Detailed information about this update can be found in CWG meeting on 06/05/2024
ABI Instrument Anomaly and data gaps	05/13/2024	05/13/2024	G16 ABI experienced a scan-mirror error and it resulted in two data gaps between 00:20 - 02:00 UTC and 03:20 - 03:30 UTC on 05/13/2024. Details in the CWG meeting on 05/15/2024. Keyword: RAD.
B07 and B11 striping	05/13/2024	05/13/2024	Horizontal striping was observed in the G16 B07 and B11 images from 02:00 - ~11:30 UTC on 05/13/2024. It was caused by latched spacelook counts at some detectors following the scan-mirror error. The issue was resolved with a manual reset of spacelook data. Details in the CWG meeting on 05/15/2024. Keyword: Rad
VNIR channel gain update	04/25/24	04/25/24	In order to apply optimal gains; the VNIR gains calculated by the solar calibrations are being post-processed and corrected for GOES-16. The CWG recommended an update based on recent solar calibration data. The post-processed gains were deployed at 1842Z. Information about this process can be found in the OSPO notification https://www.ospo.noaa.gov/data/messages/2024/03/MSG_20240327_1924.html. Information about this process can be found in the OSPO notification https://www.ospo.noaa.gov/data/messages/2024/03/MSG_20240327_1924.html. Detailed information about this update can be found in the CWG meeting on 04/24/24 and 5/1/24. Keyword: RAD
B10 striping and BDS update	02/05/24	02/09/24	Striping was seen in the products of B10 beginning on 02/05/24 at 1040Z due to anomalous performance from the detector on row #25. The detector on row 25 was switched with a BDS map update on 02/09/24 at 1706Z which resolved the striping. See details in the CWG presentations on 02/07/24 and 02/14/24. Keyword: RAD
Striping caused by lunar intrusion	01/29/2024	01/31/2024	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 01/29/2024 at 2051Z impacting the B10 products. Details in the CWG meeting on 02/28/2024. Keyword: RAD
G16 CH14 degradation	01/26/2024	01/26/2024	An incorrect gain for CH14 at 2020 UTC on 01/26/2024 caused a positive bias for the timeline about 0.6% in radiance or +0.4K @ 300 K; except for the first swath that was affected differently than the other swaths in this timeline. Details are summarized in the CWG meeting on 02/07/2024.Keyword: RAD
Striping caused by lunar intrusion	01/17/2024	01/17/2024	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 01/17/2024 at 0949Z impacting the B10 products. Details in the CWG meeting on 02/28/2024. Keyword: RAD
Striping caused by lunar intrusion	01/01/2024	01/03/2024	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 01/01/2024 at 2200Z impacting the B09 products; and on 01/03/2024 at 2336Z impacting the B10 products. Details in the CWG meeting on 02/28/2024. Keyword: RAD
Striping caused by lunar intrusion	12/21/2023	12/21/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/12/21 at 1151z impacting the B08 B09 and B10 products with faint broad stripes. Details in the CWG meeting on 01/03/2024. Keyword: RAD
Striping caused by lunar intrusion	12/06/2023	12/06/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/12/06 at 0011z impacting the B09 products with faint broad stripes; on 2023/12/07 at 0050z impacting the B07 and B16 products with faint broad stripes for the full timeline. Details in the CWG meetings on 12/13/2023 (CWG Agenda) and 01/03/2024. Keyword: RAD
Striping caused by lunar intrusion	11/22/2023	11/22/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/11/22 at 1206z impacting the B10 and B16 products with faint broad stripes; on 2023/11/23 at 1252z impacting the B08 and B16 products with faint broad stripes. Details in the CWG meeting on 01/03/2024. Keyword: RAD
Striping caused by lunar intrusion	10/25/2023	10/27/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/10/25 at 1328z impacting the B09 and B10 products with faint broad stripes; on 2023/10/26 at 1405z impacting the B09 products with faint broad stripes; on 2023/10/27 at 1501z impacting the B09 products with faint broad stripes. Details in the CWG meeting on 01/03/2024. Keyword: RAD
Striping caused by lunar intrusion	9/28/2023	9/28/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/09/28 at 1657z impacting the B08 and B09 products with faint broad stripes; on 2023/09/29 at 1622z impacting the B08 products with faint broad stripes. Details in the CWG meeting on 01/03/2024. Keyword: RAD

Event	StartDate	EndDate	Description
G17 IR gain anomaly	02/14/2025		During the GOES-17 longitudinal offset test in February 2025; abnormal gain values were observed in several IR channels between 09 - 21 UTC; beginning on 02/14/2025. Detailed analysis of the root causes is available in the report presented in the CWG meeting on 03/12/2025. Keyword: Rad.
G17 B04 Solar Cal Anomaly	01/23/2024		GOES-17 B04 displayed around 10% jump in radiance in the lunar trending and mean gain value at the solar calibration event on 01-27-2024. Substantial change in SCT SPL count was observed for B04 contrary to other ABI channels. This anomaly started to show up in the V-V data collection event on 01/23 and became significant for the solar calibration event on 01/27. Further details can be found in the CWG meeting held on 02/07/2024. Keyword: RAD.
Striping present in IR bands	01/19/2024		G17 ABI storage checkout Mode 6 operation started on 01:20UTC on 01/19/2024. Strong and consistently isolated stripes are present in the B09/B11/B12/B13 L1b images in the Gainset I period. The abnormal detectors (Det#219 in B09; Det#205 in B11; Det#152 in B12; Det#259 in B13) are identified as the root cause of significant striping in these bands. The B10 exhibits modest striping; while B16 displays frequent and varying degrees of modest to strong stripes in L1b images in the Gainset I period. Further details can be found in the CWG meeting held on 01/24/2024. Keyword: RAD.
GRB distribution never re-enabled for pre-storage checkout	03/13/23	03/14/23	GOES-17 GRB distribution was planned for one more day prior to GOES-17 entering storage mode. However due to a Ground System issue data was not distributed via GRB. L0 and L1b (starting at ~1915Z on 03/13) Data is available via LZSSc. This limitation on data availability is not related to instrument calibration. See details in the CWG presentation on 03/15/2023.
G17 drifting to the storage position	01/10/2023	02/10/2023	GOES-17 drifted from the GOES-West position at 137.3W on 01/10/2023 and reached the storage position at 104.7W on 02/10/2023. The spacecraft was declared to enter the storage mode at 14:00 UTC on 03/14/2023 after one-month pre-storage check testing. Details in the CWG meetings from 02/08 to 03/15/2023. Keyword: RAD/INR
G17 decommissioned as GOES-West	01/04/2023	01/04/2023	GOES-17 was decommissioned as the GOES-West satellite on 01/04/2023. Details in the CWG meeting 01/04/2023. Keyword: RAD/INR
G17 IR anomaly	12/03/2022	12/03/2022	A slight degradation of G17 B08-B12 bands FD images was observed at 11:10 UTC. This anomaly was caused by a slight low spacelook at 11:10 UTC triggering an incorrect gain value under pCal condition. See details in the CWG presentation on 12/14/2022. Keyword: RAD
Degraded timelines for B13-16	11/28/22	11/28/22	Invalid gains were calculated due to the gainset switch occurring after a timeline which started early. The first space look occurred with one set of parameters and the rest of the timeline operated with another. This caused invalid gain and degraded imagery from 0830Z-0835Z for B13-16. Data package presented at CWG Meeting on 12/07/2022. Keyword: RAD.
Corrupted B12 - B16 images	11/20/2022	11/20/2022	The pCal operational algorithm was not temporally suspended for the LWIR bands at the 08:30 UTC gainset switch (GSS) event on 11/20/2022. This anomaly caused the collision of the GSS and pCal events and consequently the corrupted B12-B16 images at 08:30 - 08:40 UTC timeline. More information is available at the CWG report on 11/30/2022. Keyword: RAD.
Corrupted B08 - B16 images	11/19/2022	11/19/2022	The pCal operational algorithm was not temporally suspended at the 19:30 UTC gainset switch (GSS) event on 11/19/2022. This GSS and pCal collision anomaly caused corrupted B08-B16 images at 19:30 - 19:40 UTC timeline on 11/19/2022. More information is available at the CWG report on 11/30/2022. Keyword: RAD.
G17 IR anomaly	11/19/2022	11/19/2022	G17 IR bands FD image degradation was observed at 19:30 UTC on that day. This anomaly was caused by the collision of pCal flag and gainset switch
Broad striping caused by lunar intrusion	11/19/22	11/19/22	Broad striping was observed due to lunar intrusion into the spacelook scene. The contaminated spacelook observations occurred at the following times for the specified bands and caused degradation in the products scanned during that time: on 11/19 at 05:52Z impacting the B10 and B15 FD CONUS and M1 products; and on 11/20 at 06:35Z impacting the B11 and B12 FD and M2 products. Details in the CWG meeting on 12/07/2022.Keyword: RAD
Corrupted B08 - B16 images	11/08/2022	11/08/2022	The pCal operational algorithm failed to be temporally suspended at the 19:30 UTC gainset switch (GSS) event on 11/08/2022 to avoid the GSS and pCal collision. This GSS and pCal collision anomaly caused the corrupted B08-B16 images at 19:30 - 19:40 UTC timeline on 11/08/2022. Detailed report is available at the CWG report on 11/30/2022. Keyword: RAD.
IR FPM setpoint resumed at 84K	11/02/2022		G17 IR FPM setpoint was resumed to 84K on 11/02/2022. Reference to the CWG calibration report on 11/09/2022. Keyword: RAD
B11 striping and BDS update	10/22/22	11/04/22	Intermittent striping was seen in the products of B10 beginning on 10/22/22 at 1832Z due to anomalous performance from the detector on row #68. The detector on this row was switched with a BDS map update on 11/04/22 at 14:45Z which resolved the striping from this detector. See details in the CWG presentation on 11/09/2022.Keyword: RAD
IR FPM setpoint at 92.8K	10/14/2022	10/20/2022	The setpoint of the G17 IR FPM temperature was elevated from 84K to 92.8K on 10/14 and kept as operational till 10/20. Reference to the reports in the CWG meeting on 10/21/2022. Key word: RAD
pCal Case 15 LUT update	10/13/2022		G17 pCal case 15 LUT was updated at ~19:18 UTC on 10/13/2022 to reduce the "midnight bump" at B08-B16 caused by pCal case 13. The new LUT however causes the equatorial striping near the satellite midnight time at these IR channels.
Broad striping caused by lunar intrusion	10/07/2022	10/09/2022	road striping was observed due to lunar intrusion into the spacelook scene. The contaminated spacelook observations occurred at the following times for the specified bands and caused degradation in the products scanned during that time: on 10/07 at 18:59Z impacting the B08 B11 B12 and B14 FD and M1 products; on 10/08 at 19:26Z impacting the B10 B11 and B12 FD and M1 products; and on 10/09 at 21:42Z impacting the B07 B08 B10 B14 B15 and B16 FD and M1 products. Details in the CWG meeting on 11/09/2022.Keyword: RAD
Broad striping caused by lunar intrusion	09/10/2022	09/12/2022	Broad striping was observed due to lunar intrusion into the spacelook scene. The contaminated spacelook observations occurred at the following times for the specified bands and caused degradation in the products scanned during that time: on 09/10 at 20:58Z impacting the B08 B14 and B16 FD CONUS and M1 products; on 09/10 at 22:18Z impacting the B08 B09 B13 and B14 FD CONUS and M1 products; on 09/11 at 23:04Z impacting the B11 and B12 FD product; and on 09/12 at 23:40Z impacting the B10 and B15 FD product. Details in the CWG meeting on 10/21/2022.Keyword: RAD
Yaw flip	09/06/2022	09/06/2022	GOES-17 yaw flip was performed between 20:40-21:39 UTC. The L1b FD/CONUS/MESO before and after the yaw flip are all normal. The yaw flip flag was correctly set. No impacts to INR after yaw flip. Reported at the 09/09/2022 CWG meeting by Song Guo and Vladimir Kondratovich. Keyword: INR.
IR FPM setpoint at 84K	09/02/2022	10/04/2022	The operational setpoint of the G17 IR FPM temperature was set back to 84K on 09/02 till 10/04. Reference to the reports in the CWG meeting on 09/09/2022. Key word: RAD
IR FPM setpoint at 92.8K	08/29/2022	09/02/2022	The setpoint of the G17 IR FPM temperature was changed from 90K to 92.8K on 08/29 and kept as operational till 09/02/2022. Reference to the reports in the CWG meeting on 09/09/2022. Key word: RAD
FPM temperature setpoint at 90K	08/25/2022	08/29/2022	The setpoint of the G17 IR FPM temperature was elevated from 87K to 90K on 08/25 and remained as operational till 08/29/2022. Reference to the reports in the CWG meeting on 09/02/2022. Key word: RAD
G17 VNIR anomaly	08/18/2022	08/18/2022	There was a failure of hardware server changes data outage and anomaly occurred on 08/18. The anomaly lasted about 1 hour between 19:30 UTC and 20:30 UTC and was back to normal on the same day. This anomaly was seen for all G17 VNIR channels.Keyword: RAD
FPM setpoint at 87K	08/16/2022	08/25/2022	The setpoint of the G17 IR FPM temperature was elevated from 84K to 87K on 08/16 and remained as operational till 08/25. Reference to the reports in the CWG meeting on 08/26/2022. Key word: RAD
G17 VNIR anomaly	08/15/2022	08/16/2022	Due to software updates conducted by the ground system G17 had inappropriate gains on 08/16 00:00 20:00 UTC and G17 gains are back to normal on 08/17. This anomaly was seen for all G17 VNIR channels.Keyword: RAD
Broad striping caused by lunar intrusion	08/15/2022	08/17/2022	Broad striping was observed due to lunar intrusion into the spacelook scene. The contaminated spacelook observations occurred at the following times for the specified bands and caused degradation in the products scanned during that time: on 08/15 at 00:36Z impacting the B11 and B12 FD CONUS and M1 products; and on 08/17 at 01:40Z impacting the B08 and B14 FD products. Details in the CWG meeting on 09/16/2022.Keyword: RAD
Elevated image navigation residuals	08/08/2022	08/08/2022	HCR reset at 1300 UTC caused elevated navigation residuals on NS direction. Reported at the 08/12/2022 CWG meeting by Song Guo and Vladimir Kondratovich. Keyword: INR
B11 striping and BDS update	07/21/2022	08/03/2022	Striping was seen in the products of B11 beginning on 07/21/22 at 12:13Z due to anomalous performance from the detector on row #310. The performance caused worse striping during the gain set 1 periods of the day (1900Z - 0900Z). The detector on this row was switched with a BDS map update on 08/03/22 at 19:42Z which resolved the striping. See details in the CWG presentation on 08/05/2022.Keyword: RAD
Broad striping caused by lunar intrusion	07/18/2022	07/20/2022	Broad striping was observed due to lunar intrusion into the spacelook scene. The contaminated spacelook observations occurred at the following times for the specified bands and caused degradation in the products scanned during that time: 07/18 at 01:48Z impacting the B08 B09 B13 and B14 FD products; 07/19 at 20:40Z impacting the B08 and B14 FD products; 07/19 at 20:45Z impacting the B10 B11 B12 and B15 FD products; and 07/20 at 03:21Z impacting the B11 and B12 FD products. Details in the CWG meeting on 07/08/2022.Keyword: RAD

Event	StartDate	EndDate	Description
B14/B16 Resampler Kernel Update	03/26/2025	03/26/2025	The resampler kernels for GOES-18 Bands 14 and 16 were updated to the baseline versions at approximately 23 UTC on 03/26/2025. Reference analyses were presented in the CWG meetings on 02/14/2025 and 03/26/2025. Keyword: Rad.
B11 striping and BDS update	01/28/2025	01/28/2025	Striping can be observed in the B11 images starting on 01/08/2025 at 0340Z due to anomalous performance from the detector on row #326. This issue was resolved after the BDS map update on 01/28/2025 at 1732Z . See details in the CWG presentation on 01/31/2025. Keyword: RAD
B10 tripping and BDS update	01/19/25	02/05/25	Striping was seen in the products of B10 beginning on 01/19/25 at 1100z due to anomalous performance from the detector on row #136. The detector on row 136 was switched with a BDS map update on 02/07/25 at 1703z which resolved the striping. See details in the CWG presentation on 02/07/2025. Keyword: RAD
G18 elevated residuals in both direction	01/17/2025	01/17/2025	Between 08:18-13:40Z INR anomaly in both directions caused by a Global Position System Receiver (GPSR) anomaly during a North-South Station-Keeping (NSSK) maneuver to maintain the satellite’s position in its designated geostationary orbit. The results were presented to the CWG meeting in the CWG weekly status report 1/24/2025 Keyword: INR
Erroneous VNIR gain	01/09/2025	01/10/2025	Erroneous gain values were used for G18 VNIR bands during the period of time from 2025-01-09 2120Z to 2025-01-09 2350Z and again from 2025-01-10 1320Z to 2025-01-10 1530Z; resulting in abnormal radiance during these times. The correct gains were re-applied and imagery returned to nominal. The cause of the degraded data was a misconfiguration after system maintenance. Keyword: RAD
B10 striping and BDS update	08/17/24	08/17/24	Striping was seen in the products of B10 beginning on 08/17/24 at 1729Z due to anomalous performance from the detector on row #136. The detector on row 136 was switched with a BDS map update on 08/20/24 at 1348Z which resolved the striping. See details in the CWG presentation on 08/23/24. Keyword: RAD
Weak stripes caused by lunar intrusion	07/25/2024	07/25/2024	The Moon appeared in the spacelook scenes of some detectors of G18 B07/08/10/14/15/16 at about 01:00 UTC on 07/25/2024 that may cause image striping. Details in the CWG meeting on 07/31/2024. Keyword: RAD.
Faint stripes by lunar intrusion	05/18/2024	05/18/2024	A lunar intrusion event occurred in the spacelook scenes used for the ICT calibration of G18 B07/10/15/16 at about 16:50 UTC on 05/18/2024. This event led to discernable faint broad stripes at B15 and B16 and GEO-GEO variation up to ~0.1K in B10/B15/B16 FD images at 16:50 - 16:49 UTC. Details in the CWG meeting on 05/21/2024. Keyword: RAD.
Striping caused by lunar intrusion	01/29/2024	01/31/2024	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 01/29/24 at 0010Z impacting the B08 FD product; on 01/30/24 at 0103Z impacting the B08 and B09 FD C and M1 products; and 01/31/24 at 0146Z. Details in the CWG meeting on 01/03/2024. Keyword: RAD
Striping caused by lunar intrusion	01/17/2024	01/17/2024	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 01/17/24 at 1400Z impacting the B07 and B08 FD products. Details in the CWG meeting on 02/28/2024. Keyword: RAD
Elevated image navigation residuals	01/15/2024	01/15/2024	Elevated image navigation shifts at 16:00 UTC and 18:40 UTC for all VNIR channels in the NS direction by up to 5 urads. The anomaly pattern suggests the gyro rate gaps due to the L0 packet losses. Reported at the 01/17/2024 CWG meeting by Song Guo and Vladimir Kondratovich. Keyword: INR.
Striping caused by lunar intrusion	01/02/2024	01/02/2024	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 01/02/24 at 0221Z impacting the B08 FD C and M1 products. Details in the CWG meeting on 02/28/2024. Keyword: RAD
Striping caused by lunar intrusion	12/19/2023	12/20/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/12/19 at 1417z impacting the B08 and B09 products with faint broad stripes; on 2023/12/20 at 1500z impacting the B08 and B09 products with faint broad stripes. Details in the CWG meeting on 01/03/2024. Keyword: RAD
Striping caused by lunar intrusion	12/06/2023	12/07/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/12/06 at 0432z impacting the B10 products with faint broad stripes; on 2023/12/07 at 0515z impacting the B10 products with faint broad stripes for the full timeline. Details in the CWG meetings on 12/13/2023 (CWG Agenda) and 01/03/2024. Keyword: RAD
B11 striping and BDS update	11/28/23	12/05/23	Intermittent striping was seen in the products of B11 beginning on 11/28/23 at 0809Z due to anomalous performance from the detector on row #301. The detector on row 301 was switched with a BDS map update on 12/05/23 at 1842Z which resolved the striping. See details in the CWG presentations on 11/29/23 and 12/13/23. Keyword: RAD
Obsolete VNIR gain	11/28/2023	12/11/2023	Around 17:40 UTC on 11/28/2023 the gains of the G18 VNIR bands were reverted to their previous state before the last solar calibration at 14:57 UTC on 11/27. This reversion was confirmed to be associated with the implementation of DO.13. The VNIR gains were then corrected at 15:02 UTC on 12/11/2023. Further details can be found in the CWG meeting held on 12/13/2023. Keyword: RAD.
Striping caused by lunar intrusion	11/22/2023	11/22/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/11/22 at 1615z impacting the B10 and B16 products with faint broad stripes; on 2023/11/23 at 1711z impacting the B08 products with faint broad stripes. Details in the CWG meeting on 01/03/2024. Keyword: RAD
Striping caused by lunar intrusion	10/25/2023	10/27/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/10/25 at 1748z impacting the B12 products with faint broad stripes; on 2023/10/26 at 1824z impacting the B08 B09 and B10 products with faint broad stripes; on 2023/10/27 at 1920z impacting the B08 B09 and B10 products with faint broad stripes. Details in the CWG meeting on 01/03/2024. Keyword: RAD
Striping caused by lunar intrusion	9/28/2023	9/28/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/09/28 at 2116z impacting the B08 and B09 products with faint broad stripes; on 2023/09/29 at 2042z impacting the B08 and B10 products with faint broad stripes; on 2023/09/29 at 2201z impacting the B08 and B09 products with faint broad stripes. Details in the CWG meeting on 01/03/2024. Keyword: RAD
IR anomaly at UTC 2330	09/01/2023	09/01/2023	FD degradation in some certain swaths was detected at UTC 2330 on 09/01/2023. It was caused by the lunar intrusion on G18 B07/B08/B09/B10/B11/B16. Details in the CWG meeting on 09/20/2023. Keyword: RAD
Striping caused by lunar intrusion	8/31/2023	8/31/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/08/31 at 2238z impacting the B08 B09 B10 and B12 products with faint broad stripes; on 2023/09/01 at 2334z impacting the B08 B09 B10 and B16 products with faint broad stripes; on 2023/09/03 at 0010z impacting the B08 B09 and B10 products with faint broad stripes. Details in the CWG meeting on 01/03/2024. Keyword: RAD
Striping caused by lunar intrusion	8/03/2023	8/03/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/08/03 at 2339z impacting the B08 and B09 products with faint broad stripes; on 2023/08/06 at 0142z impacting the B08 products with faint broad stripes. Details in the CWG meeting on 01/03/2024. Keyword: RAD
Striping caused by lunar intrusion	7/08/2023	7/10/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 2023/07/08 at 0208z impacting the B08 products with faint broad stripes; on 2023/07/10 at 0340z impacting the B08 products with faint broad stripes. Details in the CWG meeting on 01/03/2024. Keyword: RAD
ICT sample loss	06/21/2023		The first instance of ICT sample count loss was identified in some IR G18 IR bands on 06/21/2023. This anomaly reoccurred intermittently at some IR bands between 06/23/2023 and 06/24/2023
Frequent SPL NEdN outliers after DO.12.01 update	05/23/2023		Frequent SPL NEdN outliers were observed in certain bands on G16/G18 after the update of DO.12.01 on 05/23/2023. e.g. G16 B04/B06/B07/B09/B10/B13. The associated SPL mean value had a small fluctuation of a few counts compared to the normal condition. No apparent striping was observed. The CWG analysis shows that it is related to the failure of sample SPL spike screening after the update of DO.12.01 on 05/23/2023. The ground is working to resolve it. Details in the CWG meeting on 05/31/2023. Keyword: RAD
Striping caused by lunar intrusion	04/03/2023	04/06/2023	Faint broad stripes and strong thin stripes were present in select products due to lunar intrusion into the space look during their timelines. The strong thin stripes were caused by a known issue in the enhanced lunar rejection (ELR) algorithm. The contaminated spacelook observations occurred on 04/03 at 1910Z impacting the B09 and B10 FD and M1 products with broad faint striping; on 04/04 1933Z impacting the B08 with a strong thin stripe and B09 with faint striping in FD CONUS and M1 products; on 04/05 at 2016Z impacting the B08 FD CONUS and M1 products with faint stripes; and on 04/06 at 2209Z impacting the B08 FD and M2 products with faint broad stripes. Details in the CWG meeting on 04/19/2023. Keyword: RAD
VNIR calibration LUTs updates	03/19/2023	03/19/2023	The SCT normal vector and the quadratic terms for B01 and B02 detectors were updated during the solar calibration at 15:17 UTC on 03/19/2023. These LUT updates were to improve the VNIR calibration accuracy and the faint striping over bright convective clouds in the B01 and B02 images. respectively. Keyword: RAD.
Striping caused by lunar intrusion	03/07/2023	03/09/2023	Faint broad stripes and strong thin stripes were present in select products due to lunar intrusion into the space look during their timelines. The strong thin stripes were caused by a known issue in the enhanced lunar rejection algorithm. The contaminated spacelook observations occurred on 03/07 at 21:01Z impacting the B08 and B09 FD CONUS and M1 products with a strong thin stripe and broad faint striping; on 03/07 21:10Z impacting the B12 FD and M2 with broad faint stripes; on 03/08 at 2303Z impacting the B08 and B09 FD M1 and M2 products with faint stripes; and on 03/08 at 23:37Z impacting the B08 and B09 FD CONUS and M2 products with faint broad stripes. Details in the CWG meeting on 03/15/2023. Keyword: RAD
IR anomaly at 21:20 UTC	03/07/2023	03/07/2023	G18 B07/08/09/10/14/15/16 channel radiances displayed a sudden channel-dependent change between 21:20-21:30 UTC on 03/07/2023. It was caused by the loss of some spacelook sample signals. Details available in the slides reported in the 03/15/2023 and 03/29/2023 CWG meetings. Keyword: RAD
Striping caused by lunar intrusion	02/09/2023	02/11/2023	Faint broad stripes were present in select products due to lunar intrusion into the space look during their timelines. The contaminated spacelook observations occurred on 02/09 at 00:21Z impacting the B08 FD and CONUS products; on 02/10 at 0105Z impacting the B08 products; and on 02/11 at 01:38Z impacting the B08 FD CONUS and M2 products. Details in the CWG meeting on 03/15/2023. Keyword: RAD

Event	StartDate	EndDate	Description
B14/B16 Resampler Kernel Update	03/26/2025	03/26/2025	The resampler kernels for GOES-19 Bands 14 and 16 were updated to the baseline versions at approximately 23 UTC on 03/26/2025. Reference analyses were presented in the CWG meetings on 02/14/2025 and 03/12/2025. Keyword: Rad.
EW elevated residuals	02/20/2025	02/20/2025	At 22:00Z; G19 EW direction anomalies across all channels were confirmed by OSPO. Which was attributed to a kalman filter reset that caused the angular rate gaps. The results were presented to the CWG meeting in the CWG weekly status report on 2/26/2025. Keyword: INR.
Mass BDS map update	01/29/2025	01/29/2025	From 18:25Z to 18:30Z on 01/29; a mass BDS update was successfully implemented for GOES-19 ABI; impacting multiple channels and detectors across all 16 bands. For additional details please refer to the CWG presentations on 01/31 and 02/07/2025. Keyword: RAD.
RDP update with version L	01/27/2025	01/27/2025	At 17:43Z; ABI RDP was updated with RevL LUTs. Further improvements of some INR metrics were observed. The event impact to INR was presented to the 02/07/2025 CWG meeting by Song Guo. Keyword: INR
Two G19 EW elevated residuals	01/16/2025	01/16/2025	At 11:50Z and 18:10Z; two G19 EW direction anomalies confirmed by OSPO; due to a Kalman Filter reset that caused the angular rate gaps. The results were presented to the CWG meeting in the CWG weekly status report on 1/24/2025. Keyword: INR
B02 bias correction	01/13/2025		The new B02 K-LUT was operationally deployed at 15:40UTC on 01/13/2025. This GS update reduced the B02 radiance by about 2.6%. Details in the CWG meeting on 01/24/2025.Keyword: RAD
Mirror LUT update	12/10/2024	12/10/2024	The mirror LUT of the RevJ/CDRL-79 coefficients was deployed on 12/10/2024; together with the RevJ RDP update. Reference to the CWG meeting on 12/13. Keyword: RAD
RDP update with version J	12/10/2024	12/10/2024	At 17:00Z; ABI RDP was updated with RevJ LUTs. This update has substantially improved the CCR between the MWIR and LWIR channels. The event impact to INR was presented to the 12/12/2024 CWG meeting by Vladimir Kondrtonvich and Song Guo. Keyword: INR
Mirror LUT update	11/27/2024	11/27/2024	The mirror LUT of the correct RevH/CDRL-79 coefficients was deployed on 11/27/2024. Reference to the CWG meetings on 11/22/2024 and 11/29/2024. Keyword: RAD.
Abnormal VNIR Radiance after Data Gap	11/22/2024	11/22/2024	Data gap occurred between ~13:00 and 15:40 UTC on 11/22/2024 due to a ground system update. Immediately following the recovery; the VNIR bands experienced erroneous radiometric calibration for images collected between 15:40 and 16:10 UTC; More information referred to the CWG meeting on 12/06/2024. Keyword: RAD.
EW IR channel elevated residuals	11/15/2024	11/15/2024	All G19 IR channels experienced a large EW direction anomaly due to the RDP RevH update around 21 UTC; the results were presented to the CWG meeting in the CWG weekly status report. Keyword: INR
RevH Mirror LUT update	11/14/2024	11/14/2024	The RevH version of the scan-mirror LUT file was updated on 11/14 at around 20:55 UTC. Impact on the IR radiance was indiscernible. Details on the CWG report on 11/22/2024. Keyword: RAD.
RDP update with version H	11/14/2024	11/14/2024	At 20:55Z; ABI RDP was updated with RevH LUTs . This update has substantially improved the CCR between MWIR and LWIR channels; while SSR may need a further refinement. The event impact to INR was presented to the 11/22/2024 CWG meeting by Vladimir Kondrtonvich and Song Guo. Keyword: INR.
G19 ABI RDP/RevF update	10/30/2024	10/30/2024	At 15:24Z ABI RDP and RevF LUTs update. The event impact to INR was presented to the 11/01/2024 CWG meeting by Vladimir Kondrtonvich and Song Guo. Keyword: INR
Deployment of RevF Scan-mirror LUT	10/30/2024	10/30/2024	The new scan-mirror LUT from CDRL79-FM4-RevF for GOES-19 ABI IR bands was deployed at 15:24:00 UTC on 10/30/2024. A slight discontinuity in the time-series of gain values can be observed around satellite noon and midnight times after this update; which results in small but distinctive discontinuities in the GEO-GEO interc-comparison and GEO-LEO inter-calibration monitoring at some IR bands. More details were covered in the CWG meeting on 11/08/2024. Keyword: RAD
DRL for B02	10/30/2024	02/04/2025	The Dead Row List (DRL) algorithm was deployed for GOES-19 Band02 Detector Row #682(indexing starts from 0) at ~15:24 UTC on 10/30/2024. However; the DRL artifact can occasionally be observed in B02 images. This detector row was removed from DRL with the Q-LUT update on 02/04/2025; following the BDS map update for this detector row on 01/29/2025. The strong striping associated with this detector row disappeared around 21:00Z on 02/04/2025 after the deployments of all the corresponding updates. Details were discussed in the CWG meetings on 10/25/2024 ; 11/01/2024 and 02/14/2025. Keyword: RAD.
B02 BDS update	10/23/2024	10/23/2024	Striping was observed in GOES-19 ABI B02 products due to the anomalous performance from the detector in Row#682. The BDS map for this detector was changed from column 1 to column 3 at 17:40z on 10/23/2024. However striping in the L1b products worsened following this BDS update. For more details refer to the CWG presentation from 11/01/2024. Keyword: RAD.
G19 ABI Encoder Scale Factor Update	10/23/2024	10/23/2024	At 17:35Z ABI Encoder Scale Factor Update. The event impact to INR was presented to the 11/01/2024 CWG meeting by Vladimir Kondrtonvich and Song Guo. Keyword: INR
Solar Cal Spacelook LUT Reverted	10/18/2024	10/18/2024	The lifted threshold of the solar calibration spacelook LUT was reverted in the primary SOE string; effective since the solar calibration on 10/18/2024. More details in the CWG meeting on 10/25/2024. Keyword: RAD.
G19 ABI KF update	10/7/2024	10/7/2024	At 18:50Z ABI KF Reset RevD LUTs is promoted to OE. The event impact to INR was presented to the 10/11/2024 CWG meeting by Vladimir Kondrtonvich and Song Guo. Keyword: INR
Visible star observation restored	10/02/2024	10/02/2024	Visible star observation algorithm is corrected and the full set of the visible star observations is restored. VNIR channel image navigation is in family with 3 other ABI sensors. Still ABI does not see 1/3 of the IR stars. That causes an unstable IR channel image navigation with elevated shifts. Presented to the 09/27/2024 CWG meeting by Vladimir Kondrtonvich and Song Guo. Keyword: INR
Solar Cal Spacelook LUT Update	09/27/2024	09/27/2024	Weak striping can be observed in the early GOES-19 VNIR bands since the first solar calibration on 08/29/2024. The issue was caused by residual memory of the previous satellite's solar calibration spacelook data in the primary SOE string. The issue was resolved by lifting the lunar rejection thresholds in the solar calibration spacelook LUT for the VNIR bands which was effective on the solar calibration on 09/27/2024. The lifted LUT also corrected incorrect SNR calculations in the Ground System for the detectors affected by the residual memory issue. More details were discussed in the CWG meetings on 09/06/2024 and 10/01/2024. Keyword: RAD.
Faint striping in B01 images	09/27/2024		Weak but widespread striping may be observed over bright clouds in the GOES-19 Band 01 images. Details were available in the CWG meeting on 10/14/2024. Keyword: RAD.
Kalman filter restricted	09/25/2024	09/25/2024	Kalman filter variation is restricted to avoid a divergence. Detecror map is updated (revision C). Image navigation residuals recede to under 10 urads. Presented to the 09/27/2024 CWG meeting by Vladimir Kondrtonvich and Song Guo. Keyword: INR
LMC update	09/19/2024	09/24/2024	ABI Line-Of-Sight Motion Compensation was updated on 09/19. ABI sees a part of the stars. Kalman filter diverges causing a bad image navigation. Presented to the 09/20/2024 CWG meeting by Song Guo and Vladimir Kondratovich. Keyword: INR
BYOG in VNIR Bands	09/18/2024	09/18/2024	The BYOG DQF method was deployed at approximately 20:37 UTC on 09/18 to mitigate the impact of erroneous high-gain detectors located near the FPA edge in the VNIR bands. However; the gain values for these detectors were still incorrect at the solar cal events on 09/21 and 09/24. The incorrect gains for these detectors were resolved at the solar calibration at 11:49 UTC on 09/27. More details were discussed in the CWG meetings on 09/18 and 09/27. Keyword: RAD
Q LUT and Scan-mirror LUT updates	09/18/2024	09/18/2024	The Q Look-Up-Table (LUT) for Bands 1 and 2 along and the scan mirror LUT for the IR bands from CDLR79-FM4-RevB were deployed on the OE (ws3) string at 13:46 UTC on 09/18/2024. More details were covered in the CWG meeting on 09/27/2024. Keyword: RAD
LMC update	09/04/2024	09/18/2024	ABI Line-Of-Sight Motion Compensation was updated on 09/04. ABI still does not see the stars and operates using the spacecraft navigation. Large image navigation errors of the same magnitude. Presented to the 09/06/2024 CWG meeting by Song Guo and Vladimir Kondratovich. Keyword: INR
BDS update	08/28/2024	08/28/2024	The new Best Detector Select (BDS) maps for GOES-19 ABI were deployed at 13:10 UTC on 08/28/2024. Further details were presented in the CWG meeting on 08/30/2024. Keyword: RAD.
Large navigation error in early IR images	08/28/2024	09/03/2024	All IR channel images are produced with large navigation errors of around 140 urad in the East-West and 1400 urad in the North-South directions. ABI does not see the stars. Presented to the 08/30/2024 CWG meeting by Song Guo and Vladimir Kondratovich. Keyword: INR