Polar Orbiting Satellites - Scan
Strategies
- One of the polar orbiters
(morning) will have an early-morning equatorial
crossing time at about 7:30 AM LST.
- This satellite will also have an
equatorial crossing time 12 hours later 19:30
LST.
- The other satellite (afternoon)
will have a nominal equatorial crossing time at
14:30 LST and then again at 02:30 AM LST.
- Between the two satellites, they
cover the same point on the equator at 7:30,
14:30, 19:30, and 02:30 LST.
- Hence, the data is never more than
about six hours old.
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image
created by David Johnson at the National Center of
Atmospheric Research
Check out the real-time positions of the GOES and
POES satellites at: http://science.nasa.gov/realtime/jtrack/3d/JTrack3D.html/
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