Update 1: Jason-3 maneuvers have begun, but the Poseidon-3B altimeter is still active. Until Poseidon-3B is placed in standby mode, which is planned around January 9th, OGDRs will be generated and their quality could be degraded. Any OGDRs being distributed will not be considered operational until transfer to the tandem orbit with Sentinel-6/MF is complete and users are notified.

Topic: Jason-3 Move to Tandem Phase and Extended Product Outage

Date/Time Issued: January 08, 2025 2028Z

Product(s) or Data Impacted: Jason-3 Operational Geophysical Data Records (OGDRs)

Date/Time of Initial Impact: January 7, 2025

Date/Time of Expected End: TBD

Length of Event: Approximately 3-4 weeks

Details/Specifics of Change: Jason-3 will change its orbit to join Sentinel6-MF for a new tandem phase. A series of maneuvers will be executed, beginning tomorrow January 7, 2025, ending by the end of January or early February, depending on efficiency of preceding maneuvers. During the move, Poseidon3B will be put in standby mode, so there will be no mission and no data.

You will be notified when the mission resumes.

Contact Information: David Donahue Satellite Products and Services Division NOAA/NESDIS/OSPO/SPSD/SPB (301) 683-3236 David.R.Donahue@noaa.gov

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