  We discuss an alternative to the traditional gas-phase coupling approach in
order to explain synchronized global oscillations in CO oxidation on Pt(110).
We use a minimalist microscopic model which includes structural Pt surface
reconstruction via front propagation, and large diffusion rates for CO. The
synchronization mechanism is associated with the formation of a Turing-like
structure of the substrate. By using large parallel microscopic simulations we
derive a scaling laws which allow us to extrapolate to realistic diffusion
rates, pattern size, and oscillation periods.
