Error Characteristics Estimated from Champ, GRACE and GOCE Derived Geoids and from Satellite Altimetry Derived Mean Dynamic Topography

Details Error Characteristics Estimated from Champ, GRACE and GOCE Derived Geoids and from Satellite Altimetry Derived Mean Dynamic Topography Error Characteristics Estimated from Champ, GRACE and GOCE Derived Geoids and from Satellite Altimetry Derived Mean Dynamic Topography

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ssrv..108..179s&link_type=abstract

Space Science Reviews, v. 108, Issue 1, p. 179-193 (2003).

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This paper presents a review of geoid error characteristics of three satellite gravity missions in view of the general problem of separating scientifically interesting signals from various noise sources. The problem is reviewed from the point of view of two proposed applications of gravity missions, one is the observation of the mean oceanic circulation whereby an improved geoid model is used as a reference surface against the long term mean sea level observed by altimetry. In this case we consider the presence of mesoscale variability during assimilation of derived surface currents in inverse models. The other experiment deals with temporal changes in the gravity field observed by GRACE in which case a proposed experiment is to monitor changes in the geoid in order to detect geophysical interesting signals such as variations in the continental hydrology and non-steric ocean processes. For this experiment we will address the problem of geophysical signal contamination and the way it potentially affects monthly geoid solutions of GRACE.

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