GGM02 - An improved Earth gravity field model from GRACE

被引：477

作者：

Tapley, B ^{[1
]}

Ries, J ^{[1
]}

Bettadpur, S ^{[1
]}

Chambers, D ^{[1
]}

Cheng, M ^{[1
]}

Condi, F ^{[1
]}

Gunter, B ^{[1
]}

Kang, Z ^{[1
]}

Nagel, P ^{[1
]}

Pastor, R ^{[1
]}

Pekker, T ^{[1
]}

Poole, S ^{[1
]}

Wang, F ^{[1
]}

机构：

[1] Univ Texas, Ctr Space Res, Austin, TX 78759 USA

来源：

JOURNAL OF GEODESY | 2005年 / 79卷 / 08期

关键词：

GRACE; geopotential; geoid; global gravity field modeling;

D O I：

10.1007/s00190-005-0480-z

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

A new generation of Earth gravity field models called GGM02 are derived using approximately 14 months of data spanning from April 2002 to December 2003 from the Gravity Recovery And Climate Experiment (GRACE). Relative to the preceding generation, GGM01, there have been improvements to the data products, the gravity estimation methods and the background models. Based on the calibrated covariances, GGM02 (both the GRACE-only model GGM02S and the combination model GGM02C) represents an improvement greater than a factor of two over the previous GGM01 models. Error estimates indicate a cumulative error less than 1 cm geoid height to spherical harmonic degree 70, which can be said to have met the GRACE minimum mission goals.

引用

页码：467 / 478

页数：12

共 27 条

[1]

[Anonymous], 2002, WORLD OCEAN ATLAS 20

[2]

BETTADPUR S, 2004, 327742 GRACE

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