NEDAS.models.lorenz63 package

class NEDAS.models.lorenz63.Lorenz63Model(**kwargs)[source]

Bases: OdeModel

The Lorenz (1963) convection model, 3 variables.

As in DART models/lorenz_63 and DAPPER mods/Lorenz63. The default time step and the 6-hourly cycle of 0.25 time units follow the Sakov et al. (2012) setup in DAPPER.

Parameters:

  • sigma (float) – the parameters, by default the classic chaotic ones

  • rho (float) – the parameters, by default the classic chaotic ones

  • beta (float) – the parameters, by default the classic chaotic ones

sigma: float
rho: float
beta: float
property state_size: int

length of the state vector

x0() → ndarray[source]

a reference state, perturbed and spun up to start the truth and the ensemble

dxdt(x: ndarray) → ndarray[source]

the time derivative of the state (for an ODE stepped by step)

Submodules