Subject: general-announcement Impact: risk-of-interruption Detail: Release of ATOVS L1 PPF (Product Production Facility) V5.8.8. A risk period of up to two hours for each satellite (Metop-A, Metop-B and NOAA-19) might be observed during the maintenance period. This release includes two changes in the Level 1B products: a) Improvements in the quality flagging for the AVHRR, HIRS and AMSU products. b) The housekeeping telemetry parameters in the AVHRR, HIRS and AMSU products are set correctly; these parameters were not reliable in previous versions of the ATOVS L1 processors. Status: scheduled Issue Time: 2018-03-23 15:22:10.0 Services: AVHRR Level 1 - Metop-A AMSU-A Level 1 - Metop-A HIRS Level 1 - Metop-A AVHRR Level 1 - Metop-B AMSU-A Level 1 - Metop-B HIRS Level 1 - Metop-B AVHRR Level 1 - NOAA AMSU-A Level 1 - NOAA HIRS Level 1 - NOAA Type: Planned Maintenance Ann Nr: 3718 Rev: 1 Start Time: 2018-04-04 07:30:00.0 End Time: 2018-04-04 09:30:00.0 Satellites: Metop-A,Metop-B,MET-8,MET-10,MET-11,NOAA-19