Talk:GEOS-5 ADAS Radiance Monitoring: Difference between revisions
add Meteosat-10 SEVIRI decontamination |
|||
| (105 intermediate revisions by 3 users not shown) | |||
| Line 254: | Line 254: | ||
== GOES-13 (GOES-East) Sounder IR Data Outage == | == GOES-13 (GOES-East) Sounder IR Data Outage == | ||
*''' 20 Nov 2015'''- GOES-13 (GOES-East) Sounder instrument is experiencing an anomaly. Engineers are investigating the problem. | *''' 20 Nov 2015'''- GOES-13 (GOES-East) Sounder instrument is experiencing an anomaly. Engineers are investigating the problem. | ||
* The filter wheel stopped moving so data was not being scanned. The final data for the sounder is 20 Nov 2015 9:22am. | |||
== MetOp-B IASI outage 25 Nov - 30 Nov == | == MetOp-B IASI outage 25 Nov - 30 Nov == | ||
| Line 304: | Line 305: | ||
* The radiance data in our BUFR files for Meteosat-11 begins 20180214 06z. The observation counts appear to be split between Meteosat-10 and Meteosat-11 (total obs = former count for Meteosat-10). The radiance data for Meteosat-10 ends 20180306 12z, with Meteosat-11 continuing. The Meteosat-10 data returned after 20180313 06z with a full count of the data for Met-11 and nearly 50% of Met-10 data. | * The radiance data in our BUFR files for Meteosat-11 begins 20180214 06z. The observation counts appear to be split between Meteosat-10 and Meteosat-11 (total obs = former count for Meteosat-10). The radiance data for Meteosat-10 ends 20180306 12z, with Meteosat-11 continuing. The Meteosat-10 data returned after 20180313 06z with a full count of the data for Met-11 and nearly 50% of Met-10 data. | ||
== ATMS NOAA-20 data start == | |||
* 13 Apr 2020 - it does not look like we recorded the start of NOAA-20 ATMS on this page. It looks like our stream started 2018/05/10 12z or thereabouts. This is mainly for future reference. | |||
== Aqua AMSU-A ch 14 failure == | == Aqua AMSU-A ch 14 failure == | ||
| Line 309: | Line 313: | ||
== GOES 17 now operational GOES-West == | == GOES 17 now operational GOES-West == | ||
* '''12 February 2019''' [https://www.ospo.noaa.gov/data/messages/2019/MSG0431804.html Link] GOES-17 will | * '''12 February 2019''' [https://www.ospo.noaa.gov/data/messages/2019/MSG0431804.html Link] GOES-17 will become operational as the GOES-West satellite on February 12, 2019 at 1800 UTC. GOES-17 and GOES-15 will operate in tandem from their respective locations of 137.2 degrees west and 128 degrees west through early July 2019. After July 2019, GOES-15 data distribution will conclude while GOES-17 data distribution will continue for the GOES-West assignment. | ||
* Information on GOES-17 ABI performance including Loop Heat Pipe information and predictive saturation dates/times can be found at https://www.goes-r.gov/users/GOES-17-ABI-Performance.html | * Information on GOES-17 ABI performance including Loop Heat Pipe information and predictive saturation dates/times can be found at https://www.goes-r.gov/users/GOES-17-ABI-Performance.html | ||
* '''13 February 2019''' As of this date the GOES-15 data (Sounder radiances and satellite winds) are still in our input stream and no GOES-17 data is in the SATWND files. We will keep an eye on the input stream but do not anticipate any problems if/when we transition to GOES-17. | * '''13 February 2019''' As of this date the GOES-15 data (Sounder radiances and satellite winds) are still in our input stream and no GOES-17 data is in the SATWND files. We will keep an eye on the input stream but do not anticipate any problems if/when we transition to GOES-17. | ||
* GOES-17 data begins in the GDAS SATWND input files as of 7 November 2019 06 UTC. | |||
* '''4 March 2020''' GOES-15 Sounder radiances and AMVs no longer in the input stream as of 00 UTC 3 March 2020. | |||
== MetOp-C GPS-RO == | == MetOp-C GPS-RO == | ||
| Line 320: | Line 326: | ||
* The issues with the S-NPP band 2 have affected distribution of the whole spectrum due to QC checks in the processing that produces SDRs. A fix to allow distribution of the SDRs even when band 2 is compromised should be implemented within a week. The long term proposal is to switch to "Side 2" of the instrument to attempt to regain band 2. This will require an outage of CrIS S-NPP data for around one month. | * The issues with the S-NPP band 2 have affected distribution of the whole spectrum due to QC checks in the processing that produces SDRs. A fix to allow distribution of the SDRs even when band 2 is compromised should be implemented within a week. The long term proposal is to switch to "Side 2" of the instrument to attempt to regain band 2. This will require an outage of CrIS S-NPP data for around one month. | ||
* The CrIS NPP data returned 4/16/2019 18UTC. At that point the data for the mid-band channels was filled with missing values. We did not make any changes to the operational or MERRA-2 assimilation setup although it may have been better to have set the mid-band channels as passive. | * The CrIS NPP data returned 4/16/2019 18UTC. At that point the data for the mid-band channels was filled with missing values. We did not make any changes to the operational or MERRA-2 assimilation setup although it may have been better to have set the mid-band channels as passive. | ||
* The switch to the "Side 2 electronics | * The switch to the "Side 2 electronics" was carried out [https://www.ospo.noaa.gov/data/messages/2019/MSG1721804.html June 24, 2019 at 1332 UTC]. It had been expected that the data would be cut off after the switch but we continued receiving it and did not initially notice the changeover. The active_channels.tbl change to make CrIS_NPP passive was added to f522_fp on 6/28/2019 at 12UTC. | ||
* A copy of the active_channels.tbl was created to be used in future tags, that set the mid-band channels as passive starting March 26, 2019 and turns off all data starting at the time of the switch to side 2. This table is being used in the GEOSadas-5_25 tag. | * A copy of the active_channels.tbl was created to be used in future tags, that set the mid-band channels as passive starting March 26, 2019 and turns off all data starting at the time of the switch to side 2. This table is being used in the GEOSadas-5_25 tag. | ||
* At this point we are looking at the side-2 data and will make a decision later on when to turn it on again. | * At this point we are looking at the side-2 data and will make a decision later on when to turn it on again. | ||
| Line 332: | Line 338: | ||
== MetOp-C AMSU-A, MHS, and GOES-17 satellite winds added to datastream 17 Sep 2019 == | == MetOp-C AMSU-A, MHS, and GOES-17 satellite winds added to datastream 17 Sep 2019 == | ||
* NCEP implemented v3.8.3 of their obsproc_satingest package on 17 Sep 1400UTC. AMSU-A and MHS data from MetOp-C, and GOES-17 satellite winds are available starting with the 12z files. | * NCEP implemented v3.8.3 of their obsproc_satingest package on 17 Sep 1400UTC. AMSU-A and MHS data from MetOp-C, and GOES-17 satellite winds are available starting with the 12z files. | ||
* '''10 June 2021''' - It does not look like the start of MetOp-C AVHRR was recorded. The data starts 9 Dec 2019 18z, in association with RFC 6290 obsproc_satingest.v3.9.0. | |||
* Note: the GOES-17 data was present only for a couple of synoptic times - satellite problems were still being resolved. The data started (again) 07 November 2019 06z. | |||
== MetOp-A IASI data problem 21 Aug - 23 Sep 2019 == | == MetOp-A IASI data problem 21 Aug - 23 Sep 2019 == | ||
| Line 349: | Line 357: | ||
== IASI MetOp-A outage 12-18 November 2019 == | == IASI MetOp-A outage 12-18 November 2019 == | ||
* EUMETSAT announcement 5266 - IASI special patch and dump activity aiming to reduce outage times in case of instrument switch off will cause a prolonged data outage. Start time 2019/11/12 07:10 UTC, end time 2019/11/18 13:00 UTC. | * EUMETSAT announcement 5266 - IASI special patch and dump activity aiming to reduce outage times in case of instrument switch off will cause a prolonged data outage. Start time 2019/11/12 07:10 UTC, end time 2019/11/18 13:00 UTC. | ||
== MetOp-A MHS ch 2 deterioration, summer/fall 2019 == | |||
* Noise levels on MetOp-A MHS channel 2 began to increase early in 2019, exceeding the instrument specification level in April 2019. | |||
* The problem was not noticed until later in the year, until after the accepted observation count dropped dramatically through October and November 2019. The MHS instrument was turned off in the 5_22 FP system at 2019/12/13 00z and from 2019/11/02 in MERRA2. | |||
* The system experiment x0039 was being continued through September 2019 when the problem was discovered, and it was decided to turn off MetOp-A MHS from 2019/09/15 00z. There was an error made when adding this configuration to the DAS tag however, so the initial run of the x0041 Winter 2019 experiment had MetOp-A MHS still being assimilated in late 2009 and had to be rerun. At that time a decision was made to move the turn-off date in the DAS tag to April 15 2019 00z. | |||
== Meteosat-10 SEVIRI Decontamination 13-20 January 2020 == | == Meteosat-10 SEVIRI Decontamination 13-20 January 2020 == | ||
* From January 13- 20, 2020, EUMETSAT plans to perform a decontamination of the Meteosat-11 SEVIRI instrument. Meteosat-11 data will be interrupted during this time period and Meteosat-9 back-up data, rectified to 0 degrees, will be disseminated to support the mission. [https://www.eumetsat.int/website/home/News/DAT_4762227.html EUMETSAT announcement] [https://www.ospo.noaa.gov/data/messages/2020/MSG008184406.html NESDIS message] | * From January 13- 20, 2020, EUMETSAT plans to perform a decontamination of the Meteosat-11 SEVIRI instrument. Meteosat-11 data will be interrupted during this time period and Meteosat-9 back-up data, rectified to 0 degrees, will be disseminated to support the mission. [https://www.eumetsat.int/website/home/News/DAT_4762227.html EUMETSAT announcement] [https://www.ospo.noaa.gov/data/messages/2020/MSG008184406.html NESDIS message] | ||
== COSMIC-2 GPSRO == | |||
* COSMIC-2 E1-E6 GPSRO data begins in our data stream starting March 18 2020 18GMT. | |||
== SNPP CrIS NSR data ends == | |||
* On 22 April 2020 the feed of NSR data from CrIS SNPP was discontinued. The Full Spectral resolution (FSR) data continues. We had turned off the SNPP CrIS FSR data in the operational system after the switch to side-2 electronics (see above) so there was no impact on operations. We are looking to use the SNPP FSR CrIS data in the GEOSadas when work on the channel selection and correlated observation errors is completed. | |||
== Change in N20 CrIS-FSR - reduced acceptance rates in some channels == | |||
* Monitoring personnel noticed a drop in the number of accepted data for some channels in early June. The change occurred on June 17 2020. The satellite messages and instrument noise levels were checked but there was no indication of what had caused the change. The accepted rate for some corresponding channels increased for the NCEP assimilation (per their monitoring plots). We are keeping an eye on this instrument. | |||
== AQUA data outage from August 16, 2020== | |||
* On August 16, 2020 at 09:26:40 UTC, the data formatter for the solid state recorder on the Aqua satellite began exhibiting anomalous behavior during playback operations. All X-Band science data playback has been corrupted since the anomaly began. Spacecraft housekeeping data continues to be recorded and successfully transmitted to the ground. The other spacecraft bus subsystems and instruments are functioning nominally. Direct Broadcast (DB) data continues to transmit nominally. An update will be provided when the situation is resolved. | |||
* AIRS Aqua data returned starting with the 2 September 1800UTC synoptic time. | |||
== GPM satellite anomaly impacting core observatory data 19-26 August 2020== | |||
* Effective about 11 UTC 19 August 2020, the GPM Mission Operations Center (MOC) stopped receiving data from the satellite. While the satellite and the instruments are healthy, the Flight Operations Team (FOT) is working to safely reestablish nominal operations. Return to data collection mode may take days to a week, which will result in a permanent data gap in the GPM Radar and Radiometer products. IMERG Near Real-Time will continue to be produced but obviously no GMI data will be included in either the Early or Late product. | |||
* On August 26, the GPM Radar and Radiometer (DPR and GMI) were commanded back into science data collection mode. The distribution of new GMI data is resumed, and files contain valid data starting with August 26, approximately 13:25 UTC. | |||
== MetOp-C IASI all FOV data starts Feb 23 2021, 14z == | |||
*''' 22 Feb 2021''' NCEP will implement obsproc_satingest v3.10.3 which will include processing of all FOV MetOpC IASI data (per RFC 7767). | |||
* Previous to this update, MetOpC IASI data from clear FOVs had been quietly added (per RFC 6864) beginning 2020/05/19 12z. This data was not assimilated. | |||
* We also obtained additional all-FOV data for MetOp-C IASI going back to early January 2021 | |||
== CrIS-FSR SNPP Side 2 LW anomaly May 21, 2021 1552Z == | |||
*''' 24 May 2021''' A problem developed with the LW band on CrIS-FSR SNPP on Friday May 21. (Date/Time of Initial Impact: May 21, 2021 1552Z) The instrument is currently using the "Side 2 electronics" - since June 2019. Discussions are currently ongoing regarding whether to continue using Side-2 without the long-wave channels, or to switch back to Side 1 with missing mid-wave channels. We are not receiving CrIS-FSR data from the satellite at this time. | |||
* The CrIS-FSR SNPP SW and MW data (Side-2, no LW) returned to the data stream as of 6/2/2021 12z. It is not being assimilated. | |||
* CrIS-FSR SNPP making switch from Side-2 electronics to Side-1 starting 6/12/2021 1107z to 6/14/2021 1749z. After the sensor side switch is completed, Calibration/Validation efforts will be initiated by the NESDIS/STAR CrIS SDR Algorithm Calibration/Validation Science Team to ensure the SNPP CrIS calibrated data is at the highest quality and meets the JPSS maturity levels. The SNPP CrIS data will not be available until cleared by the calibration/validation science team. | |||
* CrIS-FSR SNPP data (SW and LW, no MW) resumes July 22, 2021 at 1400 UTC. Data is being monitored. | |||
== MetOp-C IASI anomaly 27-29 July 2021 == | |||
* '''30 July 2021''' After the scheduled maintenance on 27 July, the MetOp-C observations between 648 and 755 wavenumbers showed a shift in the mean bias of themeasurement for the first 24 hours by ~0.3 K then relaxation to near-normal biases. It was discovered that it was discovered that the operational settings of the MAS subsystem (offsets and gains) was not uploaded after the maintenance. Adjustment to the operational settings used before the power cycle was performed on Thursday the 29th and IASI-C was back in normal operations at around 2021-07-29 11:11 UTC. | |||
== NPP outage 3-4 August 2021 == | |||
* On August 3 2021 12:46:45Z NPP entered a state where it is no longer mission pointing after engineering executed a planned re-enabling of the star trackers as part of the Star Catalog loads. Engineering started recovery efforts and all instruments were put in a safe mode. | |||
* Engineering was able to successfully return the SNPP spacecraft back to the nominal Mission pointing status at 22:28 UTC August 3. The instrument recovery efforts commenced at 14:07 UTC Aug 4, 2021. As of 14:17 UTC, ATMS, CERES, and OMPS instruments were recovered. As of 1600 UTC the VIIRS instrument was recovered. As of 19:13 UTC the CrIS instrument was recovered. | |||
* Before the distribution of SNPP science data can resume, Cal/Val teams will need to check and verify that all the instruments are meeting expected requirements. More notices will follow to inform users as each instrument returns to a nominal state. | |||
* ATMS data returned on 6 August 18 UTC but the initial data set was quite small and caused the FPIT run to crash. That data was excluded from FPIT and will be excluded from MERRA2. | |||
* CrIS-FSR data returned on 10 August 00UTC. The data will be monitored to determine when it can be turned on again in the DAS. | |||
== GRAS data processing updated to version 5 on 14 September 2021. == | |||
* '''5 Sep 2021''' Operational Radio Occultation products derived from the measurements of the Metop GRAS instruments will be updated on 14 September. In the new version of the operational processor (v5), the retrieval algorithms for bending angle data have been updated, solving a number of known issues in the GRAS level 1 data quality. In particular: | |||
** No non-physical oscillations (in the mesosphere) and spikes (in the troposphere), previously present in a small number of bending angle profiles. | |||
** Existing asymmetry between tropical tropospheric bending angle biases for rising and setting occultations has been largely reduced. | |||
** Statistical properties of lower tropospheric bending angle data are now more consistent with those of other publicly available radio occultation data. | |||
** Standard deviations statistics improved, especially at high altitudes and in the mid- and lower troposphere. | |||
* see https://www.eumetsat.int/new-version-gras-radio-occultation-processing | |||
== MetOp-A IASI outage - Technology Test, end of MetOp-A IASI assimilation == | |||
* '''14 Sep 2021''' EUMETSAT announced a technology test for MetOp-A IASI. IASI has been set to the redundant side to do anomaly investigation. 6 days of outage are expected during this test. The outage started 08 September 12z. Expected end time 2021-09-15 10:00:00. The notice states "Please note that data generated after the outage might be degraded." | |||
* An additional technology test is scheduled for 2021-09-16 00:00:00 - 2021-10-15 00:00:00. IASI will scan with oversampling. The data quality is expected nominal for the entire duration of the test. However, the scan pattern will be changed (i.e. 30 scan positions will overlap) as the swath will be reduced from 2200 km to ~200 km. 4 hours of outage are foreseen on the first day of the test. | |||
*'''20 Sep 2021''' The MetOp-A IASI outage for the first test began 2021-09-08 12z. The MetOp-A IASI data returned in the 2021-09-15 06z dataset with a partial swath, according to coverage plots. At 2021-09-16 12z the number of accepted obs dropped to near zero (presumably with the start of the second technology test). The ana.log files had messages about "READ_IASI WARNING uncertainty in lza". It was decided to turn off MetOp-A IASI data starting with the 12z assimilation on this date (9/20/2021) - this will be the end of our usage of MetOp-A IASI since the data is not expected to be available after the end of the technology test. | |||
*'''19 Oct 2021''' The MetOp-A IASI instrument was switched off on October 15. Note that all other Metop-A instruments and products will be shut off by November 15, and the satellite will be de-orbited by December 1. In future tags we will be marking the end date for MetOp-A IASI in the 'active_channels.tbl' and the 'available_channels.tbl' as 9/08/21 06z prior to the first outage. By turning off the data in the 'available_channels.tbl' we will avoid the "READ_IASI WARNING uncertainty in lza" error messages that would appear even when the data is read in as passive. | |||
*'''3 Dec 2021''' The MetOp-A instruments were supposed to have been shut off by November 15 - EUMETSAT discontinued data dissemination on that date. However, some data (e.g AMSU-A, MHS, AVHRR) continued to be distributed by NOAA and at least for AMSU-A there were reports of degradation. The final date with MetOp-A data was 27 Nov 2021, 12Z. | |||
== Aqua AIRS data problem 23 Sept 2021 == | |||
* From the AIRS science team at JPL (per email from Dominic Flournoy 610.2): | |||
"we had a deep space maneuver on the 23rd and the spectral cal didn’t come back quite where it started. L1B is still 100% valid". | |||
They are considering asking us to hide ~1 day of data from when it was unstable right after the maneuver. For your reference, here is the detailed timeline (UT) from the 23rd: | |||
266/09:12:00 AIRS put into READY mode prior to Deep Space Cal | |||
266/09:12:28 Slew out begins | |||
266/09:52:25 Slew out complete | |||
266/09:53:30 Close-out slew begins | |||
266/09:55:13 Return slew complete | |||
266/09:56:00 AIRS back in OPERATE mode | |||
* This issue led to the bias coefficients (mean, cross-track bias) adjusting for several channels in FP. The adjustment was somewhat less in the MERRA2 run (mainly mean term) since the angle coefficients are slower to respond in the old variational bias correction. Since the data was reported as bad, we are opting to rewind MERRA2 and take out two days of data to get past this point in the run before using AIRS data again. | |||
== Aqua AIRS ch 305 becoming noisy == | |||
*'''13 Jan 2022''' Channel 305 on AIRS Aqua is becoming noisy starting at 11 Jan 2022 12z. The channel is being turned off in our assimilation. | |||
== MetOp-B IASI outage 8-14 March 2022 == | |||
*'''11 Mar 2022''' 200K IASI decontamination, scheduled from 2022-03-08 08:15:00.0 to 2022-03-14 16:00:00.0. IASI MetOp-B data absent from 8 March 2022 12z onward. | |||
*'''17 Mar 2022''' IASI MetOp-B data resumed in the 14 March 2022 18z file. | |||
== GPM GMI outage 23-24 March 2022 == | |||
*'''23 Mar 2022''' GPM transitioned to Sunpoint mode (SPM) on 03/23/2022 (DOY 082) after the spacecraft detected errors during the DMU #81 maneuver and aborted at approximately 13:31:29 UTC. Instruments (DPR & GMI) are in Standby mode and safe. FOT is currently investigating the causes. | |||
*'''24 Mar 2022''' The GPM Flight Operations Team working with JAXA and Ball have commanded both the radar and the radiometer to observation mode. Everything came up just as expected. The radar data stream began at approximately 10:54 UTC 24 March 2022 and the radiometer at approximately 14:54 UTC 24 March 2022. GPM PPS and JAXA MOS has been receiving data and processing to GPROF level 2 for the radiometer and level 2 for the radar products. | |||
== Aqua satellite anomaly impacting AIRS operational status beginning March 31, 2022 at 17:59:08 UTC == | |||
* On March 31, 2022 at 17:59:08 UTC the Aqua On-Board Fault Management (OBFM) detected a fault in the primary Power Controller (PC-A) and autonomously transitioned to the redundant Power Controller (PC-B). As part of the OBFM actions the spacecraft was configured to Earth Point Safe Mode. All Aqua instruments are currently in their respective safe modes, with no science data being produced. Updates to follow as they are made available. | |||
* The AIRS data returned as of 2022/04/07 18z. The data was turned on again in FP at 2022/04/19 12z. | |||
== SNPP satellite outage 28 July 2022 == | |||
*'''28 Jul 2022''' The SNPP spacecraft entered a non-nominal state at ~16:24:49 UTC on July 26, 2022, after which all SMD and telemetry data was inaccessible. The spacecraft and all instruments are currently in a safe mode state. Efforts are underway to investigate the S-NPP anomaly and prepare a plan to return the S-NPP spacecraft back to nominal status. | |||
[https://www.ospo.noaa.gov/data/messages/2022/07/MSG_20220728_1808.html NESDIS message] | |||
*'''25 Aug 2022''' The ATMS and CrIS SDR products were approved for operational use as of Tuesday, August 16, 2022. The ATMS data resumed in our data stream as of 00UTC 17 August and has been passive in FP pending review. The data was not turned off in FPIT. CrIS-FSR SNPP returned to our data stream 00UTC 24 August and is also in passive mode. | |||
*'''26 Aug 2022''' The OMPS nadir mapper data for SNPP also returned 00UTC 24 August. | |||
*'''30 Aug 2022''' The ATMS instrument on S-NPP went into safe mode sometime prior to the August 28, 2022 09 UTC ground station contact session, and no science data is being produced. Instrument engineers are investigating. Updates will be posted as they are made available. | |||
*'''1 Sep 2022''' The CrIS-FSR SNPP BUFR data was missing from 8/28/2022 12UTC to 8/31/2022 12UTC due to processing issues associated with the ATMS SNPP outage. ATMS SNPP is out of safe mode as of 18:21 UTC and the data are currently being assessed to see if they meet operational requirements. | |||
== Terra Constellation Exit Maneuver (CEM) on October 12 and 19 == | |||
* Due to the Constellation Exit Maneuver on October 12 and 19 all science products from observations onboard Terra satellite will be unavailable starting October 10 till October 19. Products after the maneuver may be unreliable and will be checked by the cal/val team. | |||
* This outage impacted MODIS AMVs and aerosols. MODIS Terra AMVs were turned off in f5294_fp as of 2022/10/10. The Terra winds resumed in the SATWND input files on 10/28 12z. | |||
== New version of EUMETSAT AVHRR AMVs == | |||
* EUMETSAT updated AMV processing for AVHRR. The old processing winds ended after 20221103/00z. | |||
* The new AVHRR AMVs start 20221130/12z in our data stream. The current FP does not include code for processing the new format winds; code modifications to process the new format data will be incorporated in a future version of FP. | |||
== GOES-18 replaces GOES-17 as operational GOES West == | |||
* GOES-18 became the operational GOES-West satellite as of 4 January 2023, 18UTC. | |||
== SNPP CrIS scan mirror baffle temperature anomaly == | |||
* On May 18, 2023, around 14:04:47 UTC SNPP CrIS experienced a sudden drop in the scan baffle temperature reading. The baffle temperature telemetry value is used in the CrIS radiometric calibration. | |||
* The assessment performed by the CrIS Cal/Val Science Team has shown that the anomaly impact is in the form of a cold radiometric bias with an estimated magnitude of about 0.1 K over the LWIR band and 0.2 K over the SWIR band. The performance of the SNPP CrIS SDR data has been evaluated and complies with the JPSS Level-1 requirements. The impact of the anomaly is well-understood and solutions are being developed and tested. See [https://www.ospo.noaa.gov/data/messages/2023/05/MSG_20230526_1205.html NESDIS satellite message] | |||
* '''1 Jun 2023''' The radiance monitoring showed that the radiance bias of the CrIS SNPP data was impacted. The change in bias appears to have mostly stabilized. The bias correction coefficients quickly adjusted to the change in bias. | |||
== AMSU-A MetOp-B ch6 increased noise level == | |||
* '''2 Jun 2023''' Noise levels for AMSU-A MetOp-B channel 6 have been increasing with a substantial jump in the noise levels since November 2022. This has led to scan lines marked as missing data when the noise level is excessive, and the count of radiance data has decreased by half. The lower channels (including ch 6) have not been used since the failure of ch 15 some time ago so this should not affect the current DAS although earlier systems (MERRA2, FPIT) exclude all channels for spots where key channels (such as ch6) are bad. | |||
== MHS MetOp-B anomaly == | |||
* An instrument anomaly was reported for MHS MetOp-B beginning 2023-06-02 07:45. The MetOp-B MHS data is missing in our input files from 20230602 12z through 20230606 12z. | |||
* From [https://www.ospo.noaa.gov/data/messages/2023/06/MSG_20230607_1357.html] on June 7 2023, after 09:58 UTC the noise on MHS channel 3 and 4 increased above NEDT specification. | |||
* From [https://www.ospo.noaa.gov/data/messages/2023/06/MSG_20230612_1455.html] due to a Metop-B MHS Instrument anomaly investigation and testing there will be a data outage from 13th June 07:11 UTC until further notice. | |||
* '''12 June 2023''' While the bias correction in the forward processing appeared to adjust to the change in the instrument, due to the increased noise and the later outage for testing the MetOp-B MHS is being turned off in MERRA2 from 6/3/2023 until the issue is resolved. | |||
* '''23 June 2023''' The noise level dropped to normal range for ch3 and ch4 after the return of Metop-B MHS data although there were no announcements about the state of the instrument. The instrument will be turned back on in DAS runs as of 00UTC 29 June, after the McMurdo Maintenance period on 28 Jun. | |||
== CrIS-FSR SNPP Long Wave Signal Processor Failure == | |||
* JPSS S-NPP CrIS (Cross Track Infrared Sounder) experienced a Long Wave Signal Processor Failure on August 13, 2023 at approximately 21:32 UTC. Engineering is investigating the cause of the CrIS LWIR failure. The overall health and safety of S-NPP Spacecraft Bus and the remaining instruments on board are nominal. | |||
* Update from the CrIS L1B science team (July 20, 2023): This has been diagnosed as an issue with the temperature sensor or readout circuitry and the actual Scene Select Module (SSM) baffle temperature remains nominal. At the time of the anomaly the measured SSM scan baffle temperature data dropped to a fixed and unrepresentative value of 250.1K, where it has remained since that time. The measured value of the SSM scan baffle temperature is used in the Internal Calibration Target (ICT) radiometric model and the polarization correction. The faulty temperature reading results in a cold radiometric bias in the SNPP CrIS calibrated radiances with an estimated magnitude of approximately 0.1 K in the LWIR band and 0.2 K in the SWIR band. Quality flags indicate invalid data for both bands. A solution has been developed and tested to address the issue and significantly reduce cold radiometric bias in the calibrated radiances. This issue will be addressed an upcoming patch for the Version 3 SNPPCrISL1B and SNPPCrISL1BNSR products. | |||
* Note that SNPP CrIS is now operating in MW+SW mode. There will no longer be LW data available from SNPP CrIS, since both LW signal processors have failed. | |||
As of Friday September 8, 2023, all CrIS SDR and BUFR products are approved for operational use and NDE/PDA subscriptions for those products were enabled at 15:30 UTC, September 8, 2023. Direct Broadcast (DB) users can use the equivalent CSPP LEO products for operations. | |||
As a reminder, the Long Wave band data will no longer be available from the S-NPP CrIS instrument. | |||
This completes the S-NPP CrIS side-1 to side-2 swap anomaly recovery. | |||
== Transitioning off the existing NOAA POES Ground System to a Commercial Ground System service == | |||
* On September 11, 2023 at 16:20 UTC during rev 94379 the NOAA-18 satellite will be fully transitioned to Parsons (Command and Control) C2 Commercial Ground Services. This first transition of a POES satellite is an ongoing effort to extend the utility of the legacy POES satellite constellation by extending life through use of a commercial system called Ground Station as a Service (GSaaS) approach. The data and products from NOAA-18 will not be distributed while data quality evaluations are ongoing. Direct readout data from NOAA-18 will continue to be made available to those users of that service. | |||
* The other satellites (NOAA-15, NOAA-19) have also experienced briefer data losses in late September and early October due to supporting POES EL (Extended Life) ground system testing. | |||
== MetOp-C AMSU-A increased noise level ch 4 == | |||
* Noise levels for MetOp-C AMSU-A channel have been increasing with an accelerated rate since mid-2022. In early October 2023 the number of rejected data for the channel increased significantly, with an increased number of missing values starting around 7 Oct 2023. The rejected data increased until nearly all of the radiances for channel 4 in the operational stream were missing by 20 Oct. The missing radiances for channel 4 led to rejection of other channels (ch 5, 6) on the instrument. | |||
* Due to the large number of rejections, Channels 4,5, and 6 were turned off in FP and in GEOSIT as of 20231020 12UTC. Shortly after that date (24 Oct) the radiance processing was modified and channel 4 data resumed (albeit noisy). Ch 4,5,6 remain turned off for MetOp-C AMSUA. | |||
== ESPC Legacy Products Retirement of MODIS Winds == | |||
*'''30 Jan 2024''' MODIS wind processing ended January 29 2024. [https://www.ospo.noaa.gov/data/messages/2024/01/MSG_20240129_1910.html NESDIS satellite message] The last date with MODIS winds was 2024/01/29 12z. | |||
== ESPC Legacy Products Retirement of AVHRR Cloud Drift Polar Winds (NOAA 15/18/19) == | |||
* Processing of AVHRR Cloud Drift Polar Winds ended on April 3, 2024. [https://www.ospo.noaa.gov/data/messages/2024/03/MSG_20240326_2007.html NESDIS satellite message] The last date with the AVHRR winds from NOAA satellites was 2024/04/03 12z. | |||
== NOAA-20 Rephasing Maneuver Burn == | |||
* On March 20 17:20:45 to 17:23:56 NOAA-20 17:20:45 to 17:23:56performed a sequence of propulsive maneuvers as part of an orbit rephasing effort to provide 180 degree separation between NOAA-20 and NOAA-21. NOAA-20 was back in mission point at 17:40:34 UTC and drifted at a lower altitude, maintained until it is 180 degrees to NOAA-21. Rephasing NOAA-20 took approximately 15 days. During this time, NOAA-20 did not meet its orbit requirements and users should exercise caution when using the NOAA-20 science data. Any use of this data is undertaken at the user's own risk. During this period NOAA-20 ATMS and CrIS were turned off in FP. On April 04, 2024 11:56:00Z, NOAA-20 performed` a 110 second propulsive Re-Phasing Maneuver (RPH) to re-establish mission orbit. [https://www.ospo.noaa.gov/data/messages/2024/04/MSG_20240404_1604.html NESDIS satellite message] | |||
== SNPP GPS geolocation problem May 25 2024. July 24 2024, Sep 24 2024, Nov 2 2024== | |||
* 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]. | |||
* Recovery efforts on the SNPP GPS unit were carried out and completed June 3 and the Cal/Val team confirmed that the GPS results are valid. Science data after 18:00 UTC June 4, 2024 will meet mission specifications. [https://www.ospo.noaa.gov/data/messages/2024/06/MSG_20240604_1805.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] | |||
* Once again the geolocation for the S-NPP spacecraft entered a degraded state starting with the observation time of 22:44:05z on September 24, 2024. Operations was able to recover the S-NPP spacecraft to a valid geolocation state at 16:34 UTC on September 27, 2024. Cal/Val teams have confirmed that all S-NPP Science products are meeting mission specifications and ready for operational use. Science data were enabled at 19:30 UTC. [https://www.ospo.noaa.gov/data/messages/2024/09/MSG_20240930_1920.html NESDIS satellite message] | |||
* Another geolocation failure was reported beginning Nov 2 2024 2215UTC. Operations recovered the S-NPP spacecraft to a valid geolocation state at ~17:20 UTC on November 6, 2024. S-NPP Science products were enabled at 16:30 UTC on November 8, 2024. [https://www.ospo.noaa.gov/data/messages/2024/11/MSG_20241108_1653.html NESDIS link] | |||
== NOAA-21 geolocation problem == | |||
* Starting on July 20 at ~06:18 UTC, the geolocation of the NOAA-21 spacecraft entered a degraded state causing the data to be inaccurate and out of mission specifications. Operations was able to recover the NOAA-21 spacecraft to a valid Geolocation state on July 20, 2024. [https://www.ospo.noaa.gov/data/messages/2024/07/MSG_20240720_2002.html A bulletin] issued 2002UTC stated the Cal/Val temas had confirmed the NOAA-21 Science products are ready for operational use. | |||
== AIRS Aqua outage 26-27 July 2024 == | |||
* AIRS data was unavailable in FP from 00z 26 July to its restart at 18z 27 July due to a scheduled calibration test. | |||
== S-NPP ATMS in Safe Hold 19 Nov 2024 == | |||
* Beginning November 6, 2024, the S-NPP ATMS telemetry showed elevated temperatures, currents, and voltages from the scan drive compensator motor. The OSPO JPSS Engineering team is in the process of diagnosing the issue and preparing mitigation measures. The ATMS instrument was placed into Safe Hold to prevent possible damage to the instrument scan drive compensator motor function. The ATMS instrument on the S-NPP satellite was placed in Safe Hold at 1630 Z on November 19, 2024 and will be offline until further notice. [https://www.ospo.noaa.gov/data/messages/2024/11/MSG_20241119_1932.html NESDIS Link] | |||
* S-NPP ATMS data returned to our input data stream as of 18z Jan 31 2025. The data was made active in FP as of 20250206/12z and will be used in MERRA2 starting 1 Feb. | |||
== GOES-19 becomes the operational GOES-East satellite 7 April 2025 == | |||
* As of April 7, 2025 at 1510 UTC, the GOES-19 satellite has been designated as the Operational GOES-East satellite. Distribution of GOES-16 data has been discontinued and the satellite is being moved to a storage location at 104.7°W. [https://www.ospo.noaa.gov/data/messages/2025/04/MSG_20250407_1510.html NESDIS message] [https://www.noaa.gov/news-release/noaas-goes-19-satellite-now-operational-providing-critical-new-data-to-forecasters News story] | |||
* The GOES AMVs were missing on 10 April due to a problem with product delivery. [https://www.ospo.noaa.gov/data/messages/2025/04/MSG_20250411_1815.html NESDIS message] | |||
== End of data delivery for POES constellation June 16, 2025 == | |||
* NOAA has ended delivery of all data from the POES (Polar Operational Environmental Satellite) constellation (NOAA-15, NOAA-18, and NOAA-19) on June 16, 2025 at 18:00 UTC. [https://www.ospo.noaa.gov/data/messages/2025/06/MSG_20250616_1800.html OSPO message] | |||
* End of data delivery impacts AMSUA, MHS, and AVHRR on NOAA-15, NOAA-18, and NOAA-19 used by GMAO systems. | |||
* NOAA decommissioned NOAA-18 on June 6. [https://www.ospo.noaa.gov/data/messages/2025/06/MSG_20250606_1801.html OSPO message] | |||
* NOAA-19 and NOAA-15 were decommissioned on August 13 and 19, respectively. [https://www.ospo.noaa.gov/data/messages/2025/08/MSG_20250819_1547.html OSPO message] | |||
== DMSP SSMIS data suspension by 30 June 2025 -- presumed indefinite extension == | |||
The Defense Meteorological Satellite Program (DMSP) will discontinue ingest, processing and distribution of all DMSP data, including data from Special Sensor Microwave Imager/Sounder (SSMIS) by 30 June 2025. [https://www.ospo.noaa.gov/data/messages/2025/06/MSG_20250625_1735.html OSPO message] | |||
UPDATE 1** An update service advisory will be sent and FNMOC now expects to decommission DMSP processing no later than July 31st. [https://www.ospo.noaa.gov/data/messages/2025/06/MSG_20250630_0345.html] | |||
UPDATE 2** The Fleet Numerical Meteorology and Oceanography Center (FNMOC) has announced plans to continue distribution of Defense Meteorological Satellite Program (DMSP) data beyond July 31, 2025. [https://www.ospo.noaa.gov/data/messages/2025/07/MSG_20250730_0015.html] | |||