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Article
Open AccessHow to quantify the accuracy of mass anomaly time-series based on GRACE data in the absence of knowledge about true signal?
A novel technique has been developed to assess noise levels in GRACE-based mass anomaly time-series when the true signal is not known. The technique is based on computing an optimal combination of analyzed tim...
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Article
Open AccessImproved recovery of temporal variations of the Earth’s gravity field from satellite kinematic orbits using an epoch-difference scheme
To monitor temporal variations of the Earth’s gravity field and mass transport in the Earth’s system, data from gravity recovery and climate experiment (GRACE) satellite mission and its successor GRACE Follow-...
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Article
Open AccessConversion of time-varying Stokes coefficients into mass anomalies at the Earth’s surface considering the Earth’s oblateness
Time-varying Stokes coefficients estimated from GRACE satellite data are routinely converted into mass anomalies at the Earth’s surface with the expression proposed for that purpose by Wahr et al. (J Geophys R...
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Article
Open AccessAnalysis of star camera errors in GRACE data and their impact on monthly gravity field models
Star cameras (SCs) on board the GRACE satellites provide information about the attitudes of the spacecrafts. This information is needed to reduce the K-band ranging data to the centre of mass of the satellites...
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Article
Open AccessUnderstanding data noise in gravity field recovery on the basis of inter-satellite ranging measurements acquired by the satellite gravimetry mission GRACE
Spectral analysis of data noise is performed in the context of gravity field recovery from inter-satellite ranging measurements acquired by the satellite gravimetry mission GRACE. The motivation of the study i...
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Article
Water storage variations of the Yangtze, Yellow, and Zhujiang river basins derived from the DEOS Mass Transport (DMT-1) model
In general, China is short of water resources and some regions even experience a shortage of daily water supply. This could threaten the stability and economic development of the nation. A study on the water s...
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Article
Localized spectral analysis of global satellite gravity fields for recovering time-variable mass redistributions
A spatiospectral localization method is discussed for processing the global geopotential coefficients from satellite mission data to investigate time-variable gravity. The time-variable mass variation signal u...