Moby t could you please tell us how they measured the average...

  1. 1,089 Posts.
    Moby t could you please tell us how they measured the average sea level to the mm in the 60's, 70's, 80's and 90's as without accurate gravity anomaly maps it is purely hypothetical/fictitious

    http://earthobservatory.nasa.gov/Features/GRACE/page3.php
 
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