tangent linear equation
An equation of the form x1 = Lx0, in which L is a linearization about the time-varying forecast trajectory of a nonlinear model (
), and x0 and x1 are first-order perturbations of nonlinear vector 
.
An equation of the form x1 = Lx0, in which L is a linearization about the time-varying forecast trajectory of a nonlinear model (), and x0 and x1 are first-order perturbations of nonlinear vector .