Just an update on the status of the NAD 83 (2011) adjustment. Since the adjustment of the passive control will be constrained to the final CORS coordinates from the soon to be finalized Multi-year CORS solutiion, NGS has decided to release both the new CORS coordinates and the passive control values simultaneous rather than publish the new CORS coordinates and then wait several months for the completion of the passive network adjustment. The target date for this is early 2012. Analysis of the passive data is coming along very nicely and there shouldn't be too many big hurdles to get over to finish this by the end of the year.
Subsequent to the completion of this adjustment the NGS geoid team will immediately begin computation of a new geoid model (GEOID12) that will more closely fit these new data. Depending on the time required by the geoid team to complete this task it is possible that the release of the NAD 83 (2011) coordinates (both CORS and passive) may be delayed further to coincide with the release of the new geoid model. This is still under discussion and a decision may not be made till later in the year.
Thanks Dave!
Thanks Dave;
A couple of questions:
Is there a possibility that NAD83(2011) will [MAYBE] then use Epoch 2011.0000 instead of Epoch 2010.0000 (which is going to confuse some folks)?
Just how “BETA” is the current OPUS-Beta data (solutions and CORS IGS08 Coordinate estimates)?
Last but NOT LEAST... will OPUS_DB submissions (I have a boat load of them pending the new realization) that are submitted between now and “then,” be UPDATED from NAD83(CORS96) Epoch 2002.0000 (with the LARGE peak-peak variances) to NAD83(2011) Epoch 2010.0000 with the REALLY tight peak-peak variances.
YES...I have been burning up the OPUS servers today!
🙂
Loyal
Good questions Loyal. The epoch will still be 2010.0 no change to that. The info on the CORS Multi-year Beta page is for all practical purposes final. This is a CWA statement to be sure but there's always the possibility that something unforeseen could cause a minor change but we haven't seen anything. The CORS had been planned to go live by the middle of August. As it stands now the plan is that OPUS users will have an option of either NAD 83 (CORS96) or NAD 83 (2011) until the rollout of the national adjustment probably by January, then all OPUS solutions will go to NAD 83 (2011). Everything in OPUS-DB will be reprocessed into NAD 83 (2011) but the superseded NAD 83 (CORS96) values will be retained just as we keep superseded values on the passive control datasheets.
GOOD answers Dave, THANKS
I guess that I can start overheating the OPUS_DB servers anytime then...
Loyal