Assessment of Systematic Errors in the Computation of Gravity Gradients from Satellite Altimeter Data

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F11%3A00373768" target="_blank" >RIV/67985815:_____/11:00373768 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1080/01490419.2010.518498" target="_blank" >http://dx.doi.org/10.1080/01490419.2010.518498</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/01490419.2010.518498" target="_blank" >10.1080/01490419.2010.518498</a>

Result language

angličtina

Original language name

Assessment of Systematic Errors in the Computation of Gravity Gradients from Satellite Altimeter Data

Original language description

We show that some of the systematic errors cannot be neglected. In particular, we found that the negligence of the dynamic ocean topography (DOT) may introduce errors that are greater than the measurement noise induced errors. If the gravity gradients are to be used for GOCE validation, then also in this case the DOT may not be neglected as the signal at GOCE altitude of 260 km may be above the GOCE requirements. In addition, we show that the altimetry derived gravity gradients cannot be compared one-to-one with those in a local Cartesian frame. The differences are small compared with the total signal, but they may be larger than the satellite altimetry induced stochastic errors and may be above the GOCE requirements. The cubic splines second derivative truncation error requires the use of 10 Hz altimeter data for the computation of gravity gradients at the Earth's surface, while 1 Hz data are sufficient for validation at GOCE altitude.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Marine geodesy

ISSN

0149-0419

e-ISSN

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Volume of the periodical

34

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

23

Pages from-to

85-107

UT code for WoS article

000290668300001

EID of the result in the Scopus database

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