Abstract's details

Development of Puerto Rico and US Virgin Islands sea surface topography for vertical datum transformation using retracked altimetry and tide gauges

Inseong Jeong (NOAA/UCAR, United States)


Stephen White (NOAA, United States)

Event: 2023 Ocean Surface Topography Science Team Meeting

Session: The Geoid, Mean Sea Surfaces and Mean Dynamic Topography (ROUND TABLE)

Presentation type: Type Poster

Contribution: PDF file


A regional mean sea surface topography (TSS or mean dynamic topography) grid for Puerto Rico and US Virgin Islands (PR/VI) is developed as one component to assist with national vertical datum transformation capabilities within NOAA's VDatum Program.
NOAA's VDatum (https://vdatum.noaa.gov) is a comprehensive suite of tools for performing vertical transformations among a variety of tidal, orthometric and ellipsoidal vertical datums, allowing to convert geospatial data from different horizontal/vertical references into a common system.
For the PR/VI TSS, approximately 20 years of retracked altimetry data with custom geophysical corrections is integrated with GNSS campaigned NOAA's water level gauges. An airborne gravity-based geoid model (xGeoid20B model from NOAA's National Geodetic Survey) is utilized for the PRVI TSS grid, improving the coastal gravity signal, assisting with detecting potential errors still remaining in the retracked altimetry data. During the development, a special quality control procedure is applied to consider impacts of the steep Puerto Rico Trench bathymetry on altimetry data.


Poster show times:

Room Start Date End Date
Esperanza Beach Room (Lobby) Wed, Nov 08 2023,16:15 Wed, Nov 08 2023,18:00
Esperanza Beach Room (Lobby) Thu, Nov 09 2023,14:00 Thu, Nov 09 2023,15:45
Inseong Jeong
United States