Talk:GEOS-5 ADAS Radiance Monitoring: Difference between revisions
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MHS MetOp-B anomaly |
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== AMSU-A MetOp-B ch6 increased noise level == | == 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. | * '''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. | |||