Talk:GEOS-5 ADAS Radiance Monitoring: Difference between revisions
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* '''1 April 2019''' On March 26 2019 1800UTC The SNPP Cross-track Infrared Sounder (CrIS) MW (Mid-wave) region (band 2) started tripping quality flags and resulting in fill data for that portion of the spectrum. The SW (Short-wave) and LW (Long-wave) IR (Infra-Red) regions are nominal. Engineers and the CrIS instrument vendor are analyzing available information to determine whether the root cause is related to a MW signal processor board issue. | * '''1 April 2019''' On March 26 2019 1800UTC The SNPP Cross-track Infrared Sounder (CrIS) MW (Mid-wave) region (band 2) started tripping quality flags and resulting in fill data for that portion of the spectrum. The SW (Short-wave) and LW (Long-wave) IR (Infra-Red) regions are nominal. Engineers and the CrIS instrument vendor are analyzing available information to determine whether the root cause is related to a MW signal processor board issue. | ||
* 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 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. | |||
* At this point we are looking at the side-2 data and will make a decision later on when to turn it on again. | |||