Reconstructing GRACE-type time-variable gravity from the Swarm satellites
نویسندگان
چکیده
منابع مشابه
time-variable gravity determination from the grace gravity solutions filtered by tikhonov regularization in sobolev subspace
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 کاملApproximate 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...
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 ...
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The first 111 days of preliminary data from GRACE were used to produce a map of the Earth’s gravity anomalies. A gravity anomaly map shows us how much the actual Earth’s gravity field departs from “normal” as defined by a simplified mathematical gravity model that assumes the Earth is perfectly smooth and featureless. In this grayscale representation, brighter areas represent positive gravity a...
متن کاملThe Variable Appearance of the Earth from Satellites
The appear:ince of the Earth as seen from space changes continually. These chniigcs it1 bright,iiess and in color are produced by interactioris between (1) geographical factors, such as coasts and mouiitaiiis; (2) scasonal factors, such as t,he brightness c,ii:tnges due t o the deposition and disappearance of siioa’; and (3) mcteorological effects such as the cloud pattcriis indicative of the f...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2021
ISSN: 2045-2322
DOI: 10.1038/s41598-020-80752-w