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Gravity Gradients and Spherical Harmonics – A Need for Different GOCE Products?

Johannes Bouman(1)and Koop Radboud(1)

(1) SRON National Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, Netherlands

Abstract

GOCE will deliver level 2 products such as grids of geoid heights and gravity anomalies, along with a spherical harmonic model of the Earth’s gravity field. Furthermore, level 1B calibrated gravity gradients will be available. The majority of these products may seem superfluous, as they are all linear functionals of one and the same quantity, the Earth’s gravitational potential. We will show why both observed gravity gradients and derived spherical harmonics might be useful. Their different information content will be discussed as well as the difficulties that occur when one product is to be transformed into another product.

 

Full paper

Workshop poster

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