Ensemble Generation for Models of Multi-Modal Systems

Robert Miller

Oregon State University

A series of ensemble experiments was performed with a simple nonlinear channel model in order to investigate the behavior of familiar ensemble generation techniques in a strongly nonlinear high dimensional system. Our results are consistent with the general idea that, in a case of a complex system with a low-dimensional attracting set, the singular vectors point off the attractor, while the bred vectors lie tangent to the attractor. Effects of noise and model errors will be discussed.