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Atmospheric effects on satellite gravity gradiometry data
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Transporter och samhällsekonomi, Geodesi.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Transporter och samhällsekonomi, Geodesi.
2009 (engelsk)Inngår i: Journal of Geodynamics, ISSN 0264-3707, E-ISSN 1879-1670, Vol. 47, nr 1, s. 9-19Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Atmospheric masses play an important role in precise downward continuation and validation of satellite gravity gradiometry data. In this paper we present two alternative ways to formulate the atmospheric potential. Two density models for the atmosphere are proposed and used to formulate the external and internal atmospheric potentials in spherical harmonics. Based on the derived harmonic coefficients, the direct atmospheric effects oil the satellite gravity gradiometry data are investigated and presented ill the orbital frame over Fennoscandia. The formulas of the indirect atmospheric effects oil gravity anomaly and geoid (downward continued quantities) are also derived using the proposed density models. The numerical results show that the atmospheric effect can only be significant for precise validation or inversion of the GOCE gradiometric data at the mE level.

sted, utgiver, år, opplag, sider
2009. Vol. 47, nr 1, s. 9-19
Emneord [en]
Satellite gradiometry, Direct and indirect atmospheric effects, Atmospheric density, gravimetric geoid determination, stokes-helmert method, formula, anomalies, strategy
Identifikatorer
URN: urn:nbn:se:kth:diva-18130DOI: 10.1016/j.jog.2008.06.001ISI: 000262762400002Scopus ID: 2-s2.0-57449085978OAI: oai:DiVA.org:kth-18130DiVA, id: diva2:336176
Merknad
QC 20100525Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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Eshagh, MehdiSjöberg, Lars Erik
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