Chemical air mass differences near fronts

West African TTL chemical composition: air mass origins

Introduction Conclusions References

Poiseuille advection of chemical reaction fronts.

Poiseuille flow between parallel plates alters the shapes and velocities of chemical reaction fronts. In the narrow-gap limit, the cubic reaction-diffusion-advection equation predicts a front-velocity correction equal to the gap-averaged fluid velocity epsilon. In the singular wide-gap limit, the correction equals the midgap fluid velocity 3epsilon/2 when the flow is in the direction of propaga...

Transitions between convective patterns in chemical fronts.

Pattern formation by interacting chemical fronts.

Experiments on a bistable chemical reaction in a continuously fed thin gel layer reveal a new type of spatiotemporal pattern, one in which fronts propagate at a constant speed until they reach a critical separation (typically 0.4 millimeter) and stop. The resulting asymptotic state is a highly irregular stationary pattern that contrasts with the regular patterns such as hexagons, squares, and s...

Linear stability analysis of convective chemical fronts