Semi-martingale driven variational principles

OD Street, D Crisan - Proceedings of the Royal Society …, 2021 - royalsocietypublishing.org
Spearheaded by the recent efforts to derive stochastic geophysical fluid dynamics models,
we present a general framework for introducing stochasticity into variational principles …

[HTML][HTML] Variational principles for fluid dynamics on rough paths

D Crisan, DD Holm, JM Leahy, T Nilssen - Advances in Mathematics, 2022 - Elsevier
In recent works, beginning with [76], several stochastic geophysical fluid dynamics (SGFD)
models have been derived from variational principles. In this paper, we introduce a new …

[HTML][HTML] Stochastic mesoscale circulation dynamics in the thermal ocean

DD Holm, E Luesink, W Pan - Physics of Fluids, 2021 - pubs.aip.org
In analogy with similar effects in adiabatic compressible fluid dynamics, the effects of
buoyancy gradients on incompressible stratified flows are said to be “thermal.” The thermal …

Stochastic wave–current interaction in thermal shallow water dynamics

DD Holm, E Luesink - Journal of Nonlinear Science, 2021 - Springer
Abstract Holm (Proc R Soc A Math Phys Eng Sci 471 (2176): 20140963, 2015) introduced a
variational framework for stochastically parametrising unresolved scales of hydrodynamic …

Lagrangian averaged stochastic advection by Lie transport for fluids

TD Drivas, DD Holm, JM Leahy - Journal of Statistical Physics, 2020 - Springer
We formulate a class of stochastic partial differential equations based on Kelvin's circulation
theorem for ideal fluids. In these models, the velocity field is randomly transported by white …

Solution properties of the incompressible Euler system with rough path advection

D Crisan, DD Holm, JM Leahy, T Nilssen - Journal of Functional Analysis, 2022 - Elsevier
The present paper aims to establish the local well-posedness of Euler's fluid equations on
geometric rough paths. In particular, we consider the Euler equations for the incompressible …

Stochastic Lagrangian perturbation of Lie transport and applications to fluids

N Besse - Nonlinear Analysis, 2023 - Elsevier
In this paper, we propose a novel stochastic Lagrangian formulation of dissipatively
perturbed Lie transport, which is based on the statistical generalized Cauchy invariants …

[HTML][HTML] Stochastic effects of waves on currents in the ocean mixed layer

DD Holm, R Hu - Journal of Mathematical Physics, 2021 - pubs.aip.org
This paper introduces an energy-preserving stochastic model for studying wave effects on
currents in the ocean mixing layer. The model is called stochastic forcing by Lie transport …

Modelling the climate and weather of a 2D Lagrangian-averaged Euler–Boussinesq equation with transport noise

D Alonso-Orán, A Bethencourt de León… - Journal of Statistical …, 2020 - Springer
The prediction of climate change and its impact on extreme weather events is one of the
great societal and intellectual challenges of our time. The first part of the problem is to make …

An implementation of Hasselmann's paradigm for stochastic climate modelling based on stochastic Lie transport

D Crisan, DD Holm, P Korn - Nonlinearity, 2023 - iopscience.iop.org
A generic approach to stochastic climate modelling is developed for the example of an
idealised Atmosphere-Ocean model that rests upon Hasselmann's paradigm for stochastic …