The track of the MIMIC center doesn exactly match the official record of the storm track. Which is right?
The MIMIC morphing algorithm needs to define a center of rotation for the resulting animation, and so the algorithm’s center moves directly between microwave-defined center locations. This path will veer slightly from the official storm track record (from NHC and JTWC), for several reasons. First, midlevel eye shown in the microwave imagery is sometimes offset from the surface-level storm center described by the official record. Second, the temporal resolutions of the two sources (1-12 hours for MIMIC and 6-12 hours for the official track) are different, so a position on one track has to be compared against the interpolated version of the other track. Third, every track (MIMIC, NHC, JTWC, etc.) is affected by navigation error, either in microwave imagery or geostationary satellite imagery, and they affect each track differently.
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