DOI: 10.1002/2014GL062045
论文题名: ESA's satellite-only gravity field model via the direct approach based on all GOCE data
作者: Bruinsma S.L. ; Förste C. ; Abrikosov O. ; Lemoine J.-M. ; Marty J.-C. ; Mulet S. ; Rio M.-H. ; Bonvalot S.
刊名: Geophysical Research Letters
ISSN: 0094-9633
EISSN: 1944-9364
出版年: 2014
卷: 41, 期: 21 起始页码: 7508
结束页码: 7514
语种: 英语
英文关键词: geodesy and gravity
Scopus关键词: Geodetic satellites
; Oceanography
; Orbits
; European Space Agency
; Gravitational model
; Gravity field and steady state ocean circulation explorers
; Gravity field model
; Gravity gradients
; Gravity recovery and climate experiments
; Ocean circulation
; Optimal resolution
; Climate models
; data acquisition
; error analysis
; geoid
; GOCE
; GRACE
; gravity field
; image resolution
; oceanic circulation
; satellite imagery
英文摘要: Gravity field and steady state Ocean Circulation Explorer (GOCE) gravity gradient data of the entire science mission and data from LAGEOS 1/2 and Gravity Recovery and Climate Experiment (GRACE) were combined in the construction of a satellite-only gravity field model to maximum degree 300. When compared to Earth Gravitational Model 2008, it is more accurate at low to medium resolution, thanks to GOCE and GRACE data. When compared to earlier releases of European Space Agency GOCE models, it is more accurate at high degrees owing to the larger amount of data ingested, which was moreover taken at lower altitude. The impact of orbiting at lower altitude in the last year of the mission is large: a model based on data of the last 14 months is significantly more accurate than the release 4 model constructed with the first 28 months. The (calibrated) cumulated geoid error estimate at 100 km resolution is 1.7 cm. The optimal resolution of the GOCE model for oceanographic application is between 100 and 125 km. Key Points Model based on LAGEOS, GRACE, and all GOCE dataCalibrated geoid error at 100 km resolution of 1.7 cmImproved geostrophic ocean circulation on 100-200 km scales ©2014. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912074084&doi=10.1002%2f2014GL062045&partnerID=40&md5=36e03c5a7c3b1a7efa42fc3c6ad22714
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6897
Appears in Collections: 气候减缓与适应
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作者单位: Centre National d'Etudes Spatiales, Toulouse, France
Recommended Citation:
Bruinsma S.L.,Förste C.,Abrikosov O.,et al. ESA's satellite-only gravity field model via the direct approach based on all GOCE data[J]. Geophysical Research Letters,2014-01-01,41(21).