Update #2: The timing and approval has been confirmed for the full recovery/reactivation plan of SNPP CrIS.

Update #1: M-BM-BThis notification is being withdrawn since it was prematurely released.M-B Once the exact timing and approval of the full recovery/reactivation plan of the SNPP CrIS is confirmed, a follow-up notification will be issued.

Topic: SNPP CrIS Switch to Side-2 Electronics

Date/Time Issued: June 13, 2019 1235 UTC

Product(s) or Data Impacted: SNPP/CrIS products, including CrIS RDR, SDR and NUCAPS L2 products

Date/Time of Initial Impact: M-BJune 18, 2019 1800 UTC

Date/Time of Expected End: M-B~14 weeks later

Length of Outage: up to 14 weeks from time of initiation

Details/Specifics of Change: M-BDuring the week of June 17-21, 2019 a switch of the SNPP/ Cross-track Infrared Sounder (CrIS) electronics from the current side-1 to the redundant side-2 will be performed.M-B This effort will be undertaken to recover from a CrIS midwave signal processor failure that occurred on side-1. Once the switch over to side-2 is initiated, all SNPP/CrIS science data (including NUCAPS L2 data) will be unavailable for up to a two week period as instrument adjustments are being performed.M-B Once the two-week switch effort is concluded, a 12-week Calibration/Validation effort will be undertaken to ensure the CrIS data is at the highest quality and maturity levels.

All SNPP/CrIS Products will be affected:

Important note: HRD/Direct Readout users should not use the data until notified that the data has reached an acceptable maturity level. M-B

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov and 301-817-3880

Web Site(s) for applicable information: N/A

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Josh Jankot
User Services Coordinator - Physical Scientist
NOAA/NESDIS/OSPO/ Satellite Products and Services Division
NOAA Center for Weather & Climate Prediction, E/SP05
5830 University Research Court, Rm 3640, College Park, MD 20740
Tel: 301-683-3242, Fax: 301-683-3297

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