447
NOUS72 KNCF 240327
ADMNCF
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PLEASE PASS TO MIC/HIC, ESA, ITO, AND SOO
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SUBJ: AWIPS GOES IMAGERY INTERRUPTIONS DUE TO SOLAR KEEPOUT
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EFFECTIVE NOW UNTIL APRIL 30, THERE WILL BE PERIODS OF TIME ROUGHLY AS MUCH AS
THREE HOURS WHEN THE GOES-E AND GOES-W SATELLITES WILL NOT BE PRODUCING IMAGES
DUE TO THEIR POSITION IN RELATION TO THE SUN. BOTH SATELLITES WILL NOT BE
AFFECTED AT THE SAME TIME. THE SPACECRAFT WILL ALTERNATE TAKING FULL DISC
IMAGES TO ACCOUNT FOR THE ONE AFFECTED. WHILE TAKING FULL DISC IMAGES, RAPID
SCAN OPERATIONS WILL NOT BE POSSIBLE. IT IS NECESSARY TO TURN OFF IMAGERY
FROM THE GOES SATELLITES DURING THESE TIMES TO PROTECT THE IMAGERS FROM
INTENSE LIGHT GOING INTO AND COMING OUT OF THE ECLIPSE PERIODS AND TO CONSERVE
ENOUGH ENERGY TO POWER HEATERS DURING THE TIME WHEN THE SOLAR PANELS CANNOT
ABSORB SUNLIGHT. THIS IS A NORMAL OCCURANCE EACH SPRING AND FALL. THE EXACT
OUTAGE TIMES ARE POSTED ON THE WEB AT
http://www.ssd.noaa.gov/PS/SATS/eclipse.html.
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NCF/sab
