Topic: GOES-WEST Operational Interleave of GOES-17 and GOES-18 August 1, 2022 - September 6, 2022 

Date/Time Issued: July 8, 2022 1737 UTC

Product(s) or Data Impacted: GOES-17 ABI L1b Radiances and L2 SCMI replaced with GOES-18 ABI L1b Radiances and L2 Cloud and Moisture Imagery

Date/Time of Initial Impact: August 1, 2022 at 1400 UTC

Date/Time of Expected End: September 6, 2022 at TBD Time 

Length of Outage: N/A

Details/Specifics of Change:

On August 1, 2022 at 1400 UTC, the operational interleave of GOES-17 and GOES-18 will be implemented.  At the time of the operational GOES-18 operational interleave, GOES-18 will be located in the West orbital slot (137.0 degrees West), 0.3 degrees from GOES-17 (at 137.3 degrees West). 

The interleave configuration entails populating the operational GOES-17 GRB (GOES Rebroadcast) service with an “interleave” of GOES-18 ABI data (replacing the GOES-17 ABI data) and GOES-17 GLM and space weather data.  See slide #9 here for the key to GRB Spacecraft IDs and Metadata:  https://www.ospo.noaa.gov/Operations/GOES/documents/GOES-18%20T2O%20Schedule%2020220610.pdf

In order to ensure continuity of GOES-West ABI operations, GRB users are advised to ensure their end-processing will accept a different ABI platform ID (G18 rather than G17) and instrument ID (FM3 rather than FM2). More information on global attributes is available in the Product User’s Guide (PUG) Volume 4 for GRB: https://www.goes-r.gov/users/docs/PUG-GRB-vol4.pdf

The GOES-West data content of each product distribution service (e.g., GRB, AWIPS, PDA, CLASS, NODD, HRIT, GNC-A, etc.) during interleave period is listed on slide #8 here:  https://www.ospo.noaa.gov/Operations/GOES/documents/GOES-18%20T2O%20Schedule%2020220610.pdf

Prior to the start of the interleave period, GOES-18 ABI L1b Radiances and L2 Cloud and Moisture Imagery will achieve Provisional maturity: fit for operational use and may be shared without restriction.

Note regarding GOES-17 ABI: GOES-17 ABI will be operating continuously until the GOES-West transition from GOES-17 to GOES-18 in January 2023. The GOES-17 ABI data will be available as it normally is through PDA subscriptions.  Continuous GOES-17 ABI operations will include the Aug-Sep and Oct-Nov interleave periods when GOES-17 ABI will have multiple focal plane module temperature (FPM) mitigations including the cooling timeline and multiple FPM set points adjustments. 

This interleave implementation will proceed regardless of Critical Weather Day declaration.

Contact Information for Further Information: SPSD.UserServices.noaa.gov

Websites for Applicable Information: 

https://www.ospo.noaa.gov/Operations/GOES/transition.html

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