Perturbations

earth2studio.perturbation

Perturbation methods are used for perturbing the input data they are provided, typically with some random noise. This is commonly done to perturb initial state fields when creating ensemble forecasts.

perturbation.Brown	Lat/Lon 2D brown noise
perturbation.BredVector	Bred Vector perturbation method, a classical technique for pertubations in ensemble forecasting.
perturbation.CorrelatedSphericalGaussian	Produces Gaussian random field on the sphere with Matern covariance peturbation method output to a lat lon grid.
perturbation.Gaussian	Standard Gaussian peturbation
perturbation.HemisphericCentredBredVector	Bred Vector perturbation method, following the approach introduced in 'Huge Ensembles Part I: Design of Ensemble Weather Forecasts using Spherical Fourier Neural Operators'.
perturbation.LaggedEnsemble	Lagged Ensemble perturbation method.
perturbation.SphericalGaussian	Gaussian random field on the sphere with Matern covariance peturbation method output to a lat lon grid
perturbation.Zero	No perturbation scheme