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4 papers · 1 filter
Geophysical flows under location uncertainty, Part III: SQG and frontal dynamics under strong turbulence conditions
Valentin Resseguier, Etienne Memin, Bertrand Chapron
Models under location uncertainty are derived assuming that a component of the velocity is uncorrelated in time. The material derivative is accordingly modified to include an advec…
Geophysical flows under location uncertainty, Part II: Quasi-geostrophy and efficient ensemble spreading
Valentin Resseguier, Etienne Memin, Bertrand Chapron
Models under location uncertainty are derived assuming that a component of the velocity is uncorrelated in time. The material derivative is accordingly modified to include an advec…
Stochastic modelling and diffusion modes for proper orthogonal decomposition models and small-scale flow analysis
Valentin Resseguier, Etienne Mémin, Dominique Heitz +1
We present here a new stochastic modelling in the constitution of fluid flow reduced-order models. This framework introduces a spatially inhomogeneous random field to represent the…
Geophysical flows under location uncertainty, Part I Random transport and general models
Valentin Resseguier, Etienne Mémin, Bertrand Chapron
A stochastic flow representation is considered with the Eulerian velocity decomposed between a smooth large scale component and a rough small-scale turbulent component. The latter…