Topic: GOES-15(GOES-West)Sounder Patch Temperature Change

Date/Time Issued: September 2, 2015 1945Z

Product(s) or Data Impacted: GOES-15(GOES-West)Sounder Data

Date/Time of Initial Impact: September 10, 2015 at approximately 2045Z

Date/Time of Expected End: September 10, 2015 at approximately 2100Z

Length of Outage: 15 minutes

Details/Specifics of Change: On September 10, 2015, SOCC Engineers will change the GOES-15 Sounder patch temperature from its LOW set point (82 K) to its HIGH set-point (88 K) starting around 2045 UTC (3:45 pm ET). The temperature transition will take approximately 15 minutes during the daily housekeeping period prior to the CONUS frame scan at 2102 UTC. No product impact is expected during this temperature change.

The sounder patch will be changed back to "MID" setting on September 23, 2015 at approximately 2030 UTC just prior to the seasonal Yaw Flip maneuver, and then to "LOW" again on October 26, ~2045 UTC.

GOES-15 patch management and Yaw Flip is necessary to keep sounder detector temperatures cold and in control and minimize fluctuations around each equinox due to the cooler blanket anomaly discovered right after launch.

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

Web Site(s) for applicable information:

See http://www.ssd.noaa.gov/PS/SATS/messages.html for this and other satellite related messages.

See http://www.ospo.noaa.gov/Operations/GOES/schedules.html for full GOES scanning schedules and scan sectors.

See http://www.ospo.noaa.gov/Operations/GOES/eclipse.html for full GOES eclipse schedules.

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