Even your beloved NASA can't figure out the data they allegedly collect.
Why do some places on Earth have higher gravity than others? Sometimes the reason is unknown.
How am I to tell which excuse the globularists will use this time to explain the constantly changing measurements of "gravity"? Centripetal acceleration? Gravity?
I think in this case it is the responsibility of FET to provide an alternative to gravity which explains the global variations in gravitational acceleration. Taken in context and with an understanding of the nature of gravity (as proposed under RET), most people will reasonably conclude that the measured deviations in Earth's gravitational field are due to local changes in density of material in the Earth's crust around certain areas.
It is well documented that the Earth's crust is not homogeneous, so given an understanding of the law of gravitation we would expect to observe measurable differences in gravitational acceleration around the globe. Now if you wish to reject the gravitational data posted by NASA in this case (but collected by other agencies), then that is another argument altogether. But if you choose to accept the evidence, then the following paragraphs will necessarily be your conclusions:
We may not understand wholly the mechanism by which gravity operates, but we do know that it exists and that it is dependent upon the amount of matter in objects and square of the distance between them. These things have been measured carefully and are known. Gravity accelerates all massive bodies towards one another, and the rate of acceleration is dependent upon the masses of the bodies and the square of the distance between them.
By contrast, FET proposes a universal acceleration as the mechanism by which objects are attracted to the surface of the Earth. Unfortunately, a surface accelerating indefinitely at a constant rate will yield measurements across its surface which are consistent and identical in space and time.
Therefore, we can conclude that the hypothesis of UA is incorrect. Again, note that this has no bearing on the shape of the Earth; this argument relates only to the mechanism which causes everything on Earth to accelerate towards its surface.