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Old RTN Decommission Date
August 3, 2012 1:28 PM

Access to the old RTN (referenced to NAD83(NSRS2007) will end on the evening of 8/19/2012.  The old RTN servers will be decommissioned and access to the RTN will only be available through the new RTN (referenced to NAD83(2011).  If you need access to the new RTN, contact Bart Alligood at bart.alligood@ncdenr.gov.

By Steven Kaufman
2619 Views,
NAD83(2011) and Geoid12 announcement
July 2, 2012 3:36 PM

 NOAA's NGS has released the newly-completed National Adjustment of 2011 Project (NA2011), which adjusts approximately 80,000 National Spatial Reference System (NSRS) coordinates. The updated NAD83(2011) epoch 2010.00 coordinates are available on NGS Datasheets.
http://www.ngs.noaa.gov/cgi-bin/datasheet.prl

Geoid12 was released concurrently with NAD83(2011). The new Geoid12 grid files can be downloaded from the NGS Geoid page.
http://www.ngs.noaa.gov/GEOID/GEOID12/

Online Interactive Geoid12 computations are available using the NGS toolkit
http://www.ngs.noaa.gov/cgi-bin/GEOID_STUFF/geoid12_prompt1.prl

By Steven Kaufman
7582 Views,
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