Talk:GEOS-5 ADAS Radiance Monitoring: Difference between revisions
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MetOp-A IASI outage - Technology Test |
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== GRAS data processing updated to version 5 on 14 September 2021. == | == GRAS data processing updated to version 5 on 14 September 2021. == | ||
* '''5 Sep | * '''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. | ** 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. | ** Existing asymmetry between tropical tropospheric bending angle biases for rising and setting occultations has been largely reduced. | ||
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** Standard deviations statistics improved, especially at high altitudes and in the mid- and lower troposphere. | ** 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 | * see https://www.eumetsat.int/new-version-gras-radio-occultation-processing | ||
== MetOp-A IASI outage - Technology Test == | |||
* '''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." | |||