Decorrelation of GRACE Time Variable Gravity Field Solutions Using Full Covariance Information
نویسندگان
چکیده
منابع مشابه
Approximate decorrelation and non-isotropic smoothing of time-variable GRACE-type gravity field models
Wediscuss a newmethod for approximately decorrelating andnon-isotropically filtering themonthly gravity fields provided by the gravity recovery and climate experiment (GRACE) twin-satellite mission. The procedure is more efficient than conventional Gaussiantype isotropic filters in reducing stripes and spurious patterns, while retaining the signal magnitudes. One of the problems that users of G...
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the grace mission has provided scientific community time-variable gravity field solutions with high precision and on a global scale. the grace mission was launched on march 2003. this mission consists of two satellites that pursue each other in their orbit. distance between two satellites in orbit is measured continuously to an accuracy of better than 1 micron using kbr system placed in satelli...
متن کاملOn the postprocessing removal of correlated errors in GRACE temporal gravity field solutions
We revisit the empirical moving window filtering method of Swenson andWahr (GeophysResLett 33:L08402, 2006) and its variants, Chambers (Geophys Res Lett 33:L17603, 2006) and Chen et al. (Geophys Res Lett 34: L13302, 2007), for reducing the correlated errors in the Stokes coefficients (SCs) of the spherical harmonic expansion of the GRACE determined monthly geopotential solutions. Based on a com...
متن کاملGRACE, time-varying gravity, Earth system dynamics and climate change.
Continuous observations of temporal variations in the Earth's gravity field have recently become available at an unprecedented resolution of a few hundreds of kilometers. The gravity field is a product of the Earth's mass distribution, and these data-provided by the satellites of the Gravity Recovery And Climate Experiment (GRACE)-can be used to study the exchange of mass both within the Earth ...
متن کاملStatic and temporal gravity field recovery using grace potential difference observables
The gravity field dedicated satellite missions like CHAMP, GRACE, and GOCE are supposed to map the Earth’s global gravity field with unprecedented accuracy and resolution. New models of Earth’s static and time-variable gravity field will be available every month as one of the science products from GRACE. Here we present an alternative method to estimate the gravity field efficiently using the i...
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ژورنال
عنوان ژورنال: Geosciences
سال: 2018
ISSN: 2076-3263
DOI: 10.3390/geosciences8090323