Atmospheric effects on satellite gravity gradiometry data
2009 (English)In: Journal of Geodynamics, ISSN 0264-3707, Vol. 47, no 1, 9-19 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2009. Vol. 47, no 1, 9-19 p.
Satellite gradiometry, Direct and indirect atmospheric effects, Atmospheric density, gravimetric geoid determination, stokes-helmert method, formula, anomalies, strategy
IdentifiersURN: urn:nbn:se:kth:diva-18130DOI: 10.1016/j.jog.2008.06.001ISI: 000262762400002ScopusID: 2-s2.0-57449085978OAI: oai:DiVA.org:kth-18130DiVA: diva2:336176
QC 201005252010-08-052010-08-052010-12-21Bibliographically approved