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Regional Models

Costa Rica (GCR-RSH-2020)


  Author: J. Garbanzo-León, et al.     Created: 2020    Resp: J. Garbanzo-León  
      Status: PUBLIC   Licence: CC BY 4.0  
Description:
The geoid for Costa Rica GCR-RSH-2020 (Geoide-Costarricense-Regional Calculado con el Método de Stokes-Helmert) is a 1 arc minute grid computed from terrestrial, marine and satellite gravity data. It is remarkable the comprehensive data cleaning and the use of new terrestrial gravity values which were not included in any other geoid determinations. The GECO global geopotential model was used for the data gap filling. The GCR-RSH-2020 computation was based on the Stokes-Helmert approach developed by the University of New Brunswick, using GOCO05s as background global geopotential model. The resulting geoid is distributed in the WGS84 system (note that between WGS84 and WRS80, there is a shift of approximately 93 cm for Costa Rica). The GCR-RSH-2020 accuracy was assessed by comparing it with GNSS/levelling values on 25 selected benchmarks of the Costa Rica vertical reference system, showing differences with a standard deviation of 0.207 m.

Model Citation:
J. Garbanzo-León, A.V. Fernández, M.V. Sánchez, J.P. Salvatierra, R.W. Kingdon, O.H. Lücke (2020). The gravimetric geoid of Costa Rica: GCR-RSH-2020. V. 1.0. GFZ Data Services. DOI: 10.5880/isg.2020.012

Reference:
J. Garbanzo-León, A.V. Fernández, M.V. Sánchez, J.P. Salvatierra, R.W. Kingdon, O.H. Lücke (2020). A regional Stokes-Helmert geoid determination for Costa Rica (GCR-RSH-2020): computation and evaluation. Contributions to Geophysics and Geodesy, 50(2), pp. 223-247. DOI: 10.31577/congeo.2020.50.2.3

Digital object identifier:
DOI:10.5880/isg.2020.012 (geoid in ISG format)

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