Coarse-grained sensitivity for multiscale data assimilation.
We show that the effective average action and its gradient are useful for solving multiscale data assimilation problems. We also present a procedure for numerically evaluating the gradient of the effective average action and demonstrate that the variational problem for slow degrees of freedom can be solved properly using the effective gradient.
Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan.
Nozomi
N
Sugiura