Search Results - "Goux, Olivier"
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A mass conserving filter based on diffusion for gravity recovery and climate experiment (GRACE) spherical harmonics solutions
Published in Geophysical journal international (01-07-2023)“…SUMMARY Over the past two decades, the GRACE (Gravity Recovery and Climate Experiment) and GRACE Follow-On mission (GRACE-FO) have provided monthly…”
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Improving sea surface temperature in a regional ocean model through refined sea surface temperature assimilation
Published in Ocean science (26-05-2023)“…Infrared (IR) and passive microwave (PMW) satellite sea surface temperature (SST) retrievals are valuable to assimilate into high-resolution regional ocean…”
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Impact of correlated observation errors on the conditioning of variational data assimilation problems
Published in Numerical linear algebra with applications (01-01-2024)“…Summary An important class of nonlinear weighted least‐squares problems arises from the assimilation of observations in atmospheric and ocean models. In…”
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Application of deep learning to the estimation of normalization coefficients in diffusion-based covariance models
Published 08-12-2023“…Variational data assimilation in ocean models depends on the ability to model general correlation operators in the presence of coastlines. Grid-point filters…”
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A filtered multilevel Monte Carlo method for estimating the expectation of discretized random fields
Published 10-11-2023“…We investigate the use of multilevel Monte Carlo (MLMC) methods for estimating the expectation of discretized random fields. Specifically, we consider a…”
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Impact of correlated observation errors on the convergence of the conjugate gradient algorithm in variational data assimilation
Published 05-12-2022“…An important class of nonlinear weighted least-squares problems arises from the assimilation of observations in atmospheric and ocean models. In variational…”
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Journal Article