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Atmospheric effects...
Atmospheric effects on satellite gravity gradiometry data
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- Eshagh, Mehdi (författare)
- KTH,Geodesi
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- Sjöberg, Lars Erik (författare)
- KTH,Geodesi
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(creator_code:org_t)
- Elsevier BV, 2009
- 2009
- Engelska.
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Ingår i: Journal of Geodynamics. - : Elsevier BV. - 0264-3707 .- 1879-1670. ; 47:1, s. 9-19
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Nyckelord
- Satellite gradiometry
- Direct and indirect atmospheric effects
- Atmospheric density
- gravimetric geoid determination
- stokes-helmert method
- formula
- anomalies
- strategy
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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