SABER is the System Agnostic Background Error Representation.
It provides generic software utilities for computing and working with the background error covariance matrix, often referred to as the B matrix. It includes the Background error on an Unstructured Mesh Package (BUMP) that can be used to compute the B matrix from ensembles on any grid. BUMP can also accommodate static and hybrid approaches for the B Matrix.
These documents give a high-level overview of the SABER code repository. A low-level description of the classes, functions, and subroutines is also available, produced by means of the Doxygen document generator.
BUMP