Topic: GOES-18 Interleaving Test June 15, 2022

Date/Time Issued: May 19, 2022 2007 UTC

Product(s) or Data Impacted: GOES-17 (GOES-West) ABI, GLM, Space Weather

Date/Time of Initial Impact: June 15, 2022 1600 UTC

Date/Time of Expected End: June 15, 2022 2000 UTC

Length of Outage: 4 hours

Details/Specifics of Change:

On June 15, 2022 at 1600 UTC, a test of the interleave configuration will be performed on the GOES-17 (GOES-West). This test is a user readiness opportunity to prepare for the operational interleave configurations on August 1 - September 6 and October 15 - November 11, 2022.

At the time of the interleave test, GOES-18 will be located in a near-West orbital slot (136.8 degrees West), just 0.4 degrees from GOES-17 (at 137.2 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 this table for the key to GRB Spacecraft IDs and Metadata: https://www.ospo.noaa.gov/Operations/GOES/documents/GRB%20Interleave%20Spacecraft%20ID's%20and%20Metadata.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

Product distribution services including PDA, CLASS, NODD (formerly known as Big Data Program), HRIT/EMWIN, GNC-A, and AWIPS will distribute their respective ABI L1b and cloud & moisture imagery from GOES-18, while ABI L2+ products will continue to come from GOES-17. GLM and space weather data will also come from GOES-17.

This test is subject to delay in the event 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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