Here we examine the use of the current primary geodetic datums used in the US, NAD 83 and NAVD 88, the challenges in maintaining these datums, and the inconsistencies that arise when they are used together with the latest satellitebased mapping technologies.

For more information on geodetic datums, visit http://www.geodesy.noaa.gov/.

For more information and a gallery of reusable resources from this video see https://www.meted.ucar.edu/training_m....
See COMET's MetEd website for hundreds of other geoscience training resources: http://www.meted.ucar.edu.