Leveraging height information from the public Dru Smith Chief Geodesist, NGS

1. Leveraging height information from the public Dru Smith Chief Geodesist, NGS Western Regional States Ht Mod Webinar

2. Outline • Steps to 2022 • Progress so far • Future help from the public Western Regional States Ht Mod Webinar

3. Major steps to 2022 • Quantify differential gravimetric geoid accuracy nationwide • Transform NGS products and services from static to dynamic coordinates • Evaluate existing/ongoing leveling data for a potential role in the new vertical datum Western Regional States Ht Mod Webinar

4. Major steps to 2022 • Develop a nationwide mapping-grade transformation tool between all modern vertical datums and the new vertical datum. • Develop and deploy a decadal-scale geoid monitoring program • FGCS endorsement of new vertical datum Western Regional States Ht Mod Webinar

5. Progress so far • Quantify differential gravimetric geoid accuracy nationwide • GSVS11: complete! s(DN) = 1 cm (0<d<300 km) • http://link.springer.com/article/10.1007%2Fs00190-013-0653-0 • GSVS14: planned (Iowa) • GSVSXX: TBD Dru Smith’s unofficial progress meter opinion 0% 100% Western Regional States Ht Mod Webinar

6. Progress so far • Transform NGS products and services from static to dynamic coordinates • Oracle replacing Sybase • OPUS Projects progressing toward being the new “bluebooking” • All historic GPS receiver files collected for re-processing with one consistent set of software Dru Smith’s unofficial progress meter opinion 0% 100% Western Regional States Ht Mod Webinar

7. Progress so far • Evaluate existing/ongoing leveling data for a potential role in the new vertical datum • No significant progress to date Dru Smith’s unofficial progress meter opinion 0% 100% Western Regional States Ht Mod Webinar

8. Progress so far • Develop a nationwide mapping-grade transformation tool between all modern vertical datums and the new vertical datum. • Finalized a vertical datum in all areas but Hawaii • Begun outreach on performing a nationwide GNSS survey on benchmarks prior to 2022 Dru Smith’s unofficial progress meter opinion 0% 100% Western Regional States Ht Mod Webinar

9. Progress so far • Develop and deploy a decadal-scale geoid monitoring program. • Discussed design of such program at a workshop in Boulder, 2010 • Arrived at consensus value for W0 with Canadians for near-future geoid models Dru Smith’s unofficial progress meter opinion 0% 100% Western Regional States Ht Mod Webinar

10. Future Help from the public • Continue to collect GPS on Bench Marks • This maintains NAVD 88 until 2022 • Participate in nationwide GNSS on Bench Mark survey sometime in 2019-2021 timeframe • Simultaneous, nationwide, on marks of interest to you • Get the word out when the time comes Western Regional States Ht Mod Webinar

11. Future Help from the public • Mini-GSVS’s if possible • Need not be as all-encompassing at the 3 official surveys. • GPS/leveling over 100 km? • Coordinate with NGS if this is for you • Reach out to GRAV-D team if you have collaboration ideas • Shared aircraft? Western Regional States Ht Mod Webinar

12. Future Help from the public • Join NGS! • Our workforce is dwindling while work is increasing! • Surveyors, Geodesists, Cartographers, Remote Sensing specialists, etc • Student internships • Contracted research / University grants Western Regional States Ht Mod Webinar