Two Geometrical Problems in Cloud Motion Wind Algorithm

Mapping correction and wind vector calculation in cloud motion wind algorithm were discussed. If geographical matching between images is not accurate, mapping correction can amend systematic errors caused by satellite movement relative to the earth. Wind vector calculation based on an ellipsoidal earth was also described. The formulas for wind vector calculation are simple and accurate. Cloud motion wind calculation is essentially a geometrical issue. Careful consideration at geometric issue is an important approach to error reduction.