1. NGS Geodetic Tools and Education Services Marti Ikehara: marti.ikehara@noaa.gov California Geodetic Advisor 916-227-7325 www.ngs.noaa.gov

2. Topics 1.CORS/CGPS in CA 2. Geoid12A 3.Datum Tags/Epochs 4.New Datasheet format 5.Advisor Program 6.Educational tools/services Demonstrations: VDATUM, v3.1 (-122 12.2, 373737) DSWorld

3. As Of 6/ 12

6. New CORS in CA CSRC requested about 130 of the CRTN backbone sites to become NGS CORS; some already were Essentially all but a handful were added to NGS CORS network in 2 nd quarter, 2012 PBO Time Series Website Awesome http://pbo.unavco.org/data/gps/plotviewer/P334 /GPS

9. GEOID12A Development Model is BASED on ellipsoid heights published from NA2011 project Proposed stations, different than for GEOID09, for inclusion/exclusion were distributed to geodetic advisors for review & acceptance/rejection; eg, because location in subsidence area OPUS-DB results are included To improve future geoid modeling – Collect GPS data on leveled BMs which are likely to have been stable since they were leveled (1988)

10. GEOID12A Error Grid DRAFT, mid-Jan 2013

11. NGS Datum Tags/Epoch Dates, Transforms CORSPassive (CA)Multiple Epochs ITRF00 1997.00NAD83 (1998) 1998.502000.35, 2004.50 ITRF00 2002.00[NAD83 (2007) 2002.00—E] NAD83 (CORS96) 2002.00NAD83 (2007) 2007.00 IGS08 2010.00 NAD83 (2011) 2010.00 Transforms in development, mostly for batch files for mapping purposes (GIS): NAD83 (2011) to NAD83 (2007) NAD83 (2007) to most recent significant adjustment (98) NAD83 (1998) to NAD83 (1992)*

12. HTDP, currently v. 3.2.3 4 th option: Interactively transform positions between reference frames and/or dates. Epoch date format now includes deci-year All NAD83 realizations are treated the same Datum tag/epoch usage Start with NAD83(2011) 2010.00 as constraints in adjustment, Utilize HTDP to translates to epoch desired, Produce NAD83(2011) 2004.50 coordinates, for example

13. 12 cm

15. DSWorld: mapping tool and more Need to have Google Earth installed Tools, Download PC Software, USER-CONTRI- BUTED SOFTWARE, DSWorld http://www.ngs.noaa.gov/PC_PROD/PARTNERS/ index.shtml FIRST: Tools, Update program Enhancement enables you to distinguish VERTCON NAVD88 from other(control) NAVD88

16. 5/24/201516

17. Datums available in VDATUM

18. VDATUM tips Must choose Height rather than Sounding Must choose Ht for Source AND Target Longitude shown before latitude Must use – for longitude Improvements: Do not need to select geographic model region More streamlined interface for user Horizontal/geometric transformations also

19. The Changing Face of the Geodetic Advisor Program What are we not? Geodentists… How is it changing? We are…  Baby boomers! Aging…Retiring  Fewer cooperative partners (states) can justify the financial agreement  Recommendation from some many years ago was for Fedgov to fully fund Advisor program  Advisors to be located at NOAA or Fed office

20. The Changing Face of the Geodetic Advisor Program, Geography  Provide equal service to non-coop states  REGIONALIZATION  15 advisors total for 50 states, PR, Pacific islands  Regions being discussed in NGS Advisory Group Ross.Mackay@noaa.govRoss.Mackay@noaa.gov is Chair (SAB Chief)  Situated in a city with decent airport!  Proposal includes “State Coordinator” as POC  Transition in next 4 years, with attrition

22. Science & Education, Presentations Library downloadable, sortable/searchable

23. Height Modernization Program monthly meetings, presentations

24. NGS Training Center

27. Marti.ikehara@noaa.gov