FN Archimer Export Format PT J TI Large-scale flows under location uncertainty: a consistent stochastic framework BT AF CHAPRON, Bertrand DERIAN, P. MEMIN, E. RESSEGUIER, Valentin AS 1:1;2:2;3:2;4:1,2; FF 1:PDG-ODE-LOPS-SIAM;2:;3:;4:PDG-ODE-LOPS-SIAM; C1 IFREMER, LOPS, Plouzane, France. INRIA, IRMAR, Campus Univ Beaulieu, Rennes, France. C2 IFREMER, FRANCE INRIA, FRANCE SI BREST SE PDG-ODE-LOPS-SIAM UM LOPS IN WOS Ifremer jusqu'en 2018 copubli-france IF 3.198 TC 29 UR https://archimer.ifremer.fr/doc/00429/54081/56227.pdf LA English DT Article DE ;large-scale flow modelling;stochastic parametrization;modelling under location uncertainty;stochastic Lorenz model;stochastic transport AB Using a classical example, the Lorenz-63 model, an original stochastic framework is applied to represent large-scale geophysical flow dynamics. Rigorously derived from a reformulated material derivative, the proposed framework encompasses several meaningful mechanisms to model geophysical flows. The slightly compressible set-up, as treated in the Boussinesq approximation, yields a stochastic transport equation for the density and other related thermodynamical variables. Coupled to the momentum equation through a forcing term, the resulting stochastic Lorenz-63 model is derived consistently. Based on such a reformulated model, the pertinence of this large-scale stochastic approach is demonstrated over classical eddy-viscosity based large-scale representations. PY 2018 PD JAN SO Quarterly Journal Of The Royal Meteorological Society SN 0035-9009 PU Wiley VL 144 IS 710 UT 000425645200019 BP 251 EP 260 DI 10.1002/qj.3198 ID 54081 ER EF