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NOAA Datums Videos 2014

Differential correction with NA2011 and the newest epoch of NAD83

See our and Datums Basics and GPS Tutorials for the long-awaited results of months of rigorous testing and peer review

Trimble Positions software has replaced Trimble GPS Analyst in ArcGIS 10.1

ALASKA GPS and GIS users - check out Joel Cusick's Datum and Projections presentation Feb 2013

ArcGIS 10.1 - New and Cool improvements see Presentation from Melita Kennedy, ESRI : Projections and Datums Dec 2012

Home Datums Basics Difference NAD83 epochs - Looking ahead to 2022
Difference NAD83 epochs - Looking ahead to 2022 PDF Print E-mail

The following images, courtesy of Michael Dennis, NGS show the predicted change from NAD 83(2011/PA11/MA11) to the new geometric datum (represented here by IGS08 at epoch 2022.00). The last image is the predicted change from NAVD 88 to the new vertical datum

PREDICTED_change_NAD83_2011_to_2022

PREDICTED_change_NAD83_2011_to_2022

PREDICTED_change_NAD83_2011_to_2022

PREDICTED_change_NAD83_2011_to_2022