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Gravity field improvements in the North Atlantic region for the GOCINA project

Mr Rene Forsberg(1), R Hipkin(2) , A Olesen(3) , D Solheim(4) , and Ms A L Vest(3)

(1) Kort og Matrikelstyrelsen (KMS), Rentemestervej 8, DK2400 Copenhagen NV, Denmark
(2) University of Edinburgh, Edinburgh, UK EH9 3JW, United Kingdom
(3) KMS, Rentemestervej 8, DK2900 Copenhagen NV, Denmark
(4) Statens Kartverk, Monserudveien, N-3500 Honefoss, Norway

Abstract

An airborne gravity survey was carried out in the Greenland-Iceland- Faeroe-Scotland region in the summer of 2003 to collect high-quality airborne gravity data, as part of the GOCINA project. Together with data from earlier airborne surveys, and other new airborne measurements to the north in the Greenland and Norwegian Seas (collected in the OCTAS project), the airborne data will allow the correction of older ship data to create a uniform gravity field database of the North Atlantic region for improved geoid determination. Data from new satellite missions like CHAMP and GRACE will be used to enhance the long wavelengths of the field. As part of the GOCINA project the geoid processing will also identify problems related to data and methods, and highlight the potential improvements by GOCE data. The underlying data for the geoid will at the same time be able to serve as ground truth for computation of gravity gradient at the GOCE altitude, and thus provide independent calibration and validation data for GOCE.

 

Workshop presentation

Full paper

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry

GOCE04