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Article Dans Une Revue Journal of Geophysical Research : Solid Earth Année : 2023

Data‐Driven Gap Filling and Spatio‐Temporal Filtering of the GRACE and GRACE‐FO Records

Résumé

Climate Experiment (GRACE) has measured changes in the Earth's gravity field (Tapley et al., 2004). The GRACE mission included two satellites in a low, near-circular, near-polar orbit following each other at a distance of approximately 220 km. When the leading satellite passed over a sizable mass, it was pulled slightly more toward the mass than the trailing satellite and orbits were perturbed differently. By precisely measuring variations in the intra-satellites distance, it was possible to quantify the Earth's mass variations through the differential gravitational pull on the two satellites. GRACE proved relevant and rapidly became an essential tool for monitoring the movements of mass within and between Earth's atmosphere, oceans, land and ice sheets. In fact, over the past decades, GRACE has provided insights in various fields, from geophysics to hydrology. For example, observations of mass variations derived from
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Dates et versions

hal-04093176 , version 1 (09-05-2023)

Identifiants

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Louis‐marie Gauer, Kristel Chanard, Luce Fleitout. Data‐Driven Gap Filling and Spatio‐Temporal Filtering of the GRACE and GRACE‐FO Records. Journal of Geophysical Research : Solid Earth, 2023, 128 (5), ⟨10.1029/2022JB025561⟩. ⟨hal-04093176⟩
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