Geodesy (leveling) and Gravity article

While the URL indicates a date of 15 September, this is linked from the NGS site with a date of 23 June 2023. Nonetheless, I post (or repost) the page with an interesting article on using geodetic leveling to help validate the performance of next-gen gravimeters.

These new meters are impacted by differences in height at the millimeter level. 

See: https://oceanservice.noaa.gov/podcast/sep15/mw131-atomic-clocks.html