Topic: GOES-13/14/15/16 Spring 2018 Solar RFI predicted times are now available

Date/Time Issued: February 28, 2018 1920 UTC

Product(s) or Data Impacted: GOES-13/14/15/16 Imager and Sounder Data plus Ancillary Services (GVAR, SAR, LRIT, EMWIN, DCS, GRB, etc.)

Date/Time of Initial Impact: February 26, 2018 1704 UTC

Date/Time of Expected End: March 9, 2018 2144 UTC

Length of Outage: See table in details.

Details/Specifics of Change: The potential for solar radio frequency interference (RFI) with a satellite downlink circuit will occur whenever the Sun passes into the beam of the ground station receiving antenna.

We received the following information from our Mission Operations Division concerning the potential for outages of the GOES data stream including GVAR (GOES Variable) Imager and Sounder, EMWIN (Emergency Managers Weather Information Network), SAR (Search and Rescue), Low Rate Information Transmission (LRIT), High Rate Information Transmission (HRIT), GOES Data Collection System (DCS), Sensor Data (SD), Telemetry and Command (T&C), Weather Facsimile (WEFAX), Data Collection Platform Report (DCPR), Multi-use data link (MDL), Raw Data Link (RDL), etc.

The Wallops and Fairbanks Command and Data Acquisition Stations (CDAs) and Environmental Satellite Processing Center (ESPC) receiving antennas may experience periods of Solar RFI as predicted below. Solar RFI can cause loss of telemetry lock and command capability, as well as degradation or loss in the GVAR data.

SOLAR RFI PREDICTED TIMES FOR SPRING 2018

SPACECRAFT DATE TIME STATION OPERATIONAL IMPACT

GOES-13 2 MAR - 9 MAR 1556 - 1608 UTC WALLOPS T&C

2 MAR - 9 MAR 1555 - 1607 UTC SUITLAND

GOES-14 1 MAR - 8 MAR 1917 - 1929 UTC WALLOPS T&C, EMWIN, MDL

1 MAR - 8 MAR 1917 - 1929 UTC SUITLAND

GOES-15 2 MAR - 9 MAR 2132 - 2144 UTC WALLOPS SD, GVAR, T&C, EMWIN, LRIT,

2 MAR - 9 MAR 2132 - 2143 UTC SUITLAND WEFAX, DCS, DCPR, SAR, MDL

23 FEB - 2 MAR 2106 - 2117 UTC FAIRBANKS

GOES-16 1 MAR - 8 MAR 1706 - 1718 UTC WALLOPS RDL, GRB, T&C, HRIT, DCPC,

1 MAR - 8 MAR 1707 - 2719 UTC SUITLAND SAR

1 MAR - 8 MAR 1705 - 1716 UTC FAIRMONT

Contact Information 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.noaasis.noaa.gov/ for Direct Services Branch (DSB) information.

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