PARALLAX
- Parallax refers to the
displacement of cloud locations due to increasing
viewing angle. Here is an illustration.
- Parallax is a function of:
- The viewing angle
- cloud height
- The offset is away from the
satellite along a great circle arc.
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- Here are examples of the
parallax-induced cloud displacement for GOES and Polar orbiting
satellites as a function of angular distance from
nadir.
- Notice that the parallax-induced
cloud displacement gets real bad at angles
greater than 60° for the GOES imagery.
- Parallax also applies to terrain
features such as mountains.
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