Abstract: The Lyapunov diffusivity is used to investigate local isentropic mixing events in the upper troposphere?lower stratosphere (UTLS) region. The diagnostic highlights the seasonal cycle of the longitudinally varying mixing ...

Abstract: A new diagnostic (the ?Lyapunov diffusivity?) is presented that has the ability to quantify isentropic mixing in diffusion units and detects local mixing events by describing latitude?longitude variability. It is a hybrid ...