A New Framework for Wind Convergence over Western Boundary Currents
Here, by decomposing the atmosphere into frontal and non-frontal components, we illustrate that the oceanic imprint on both the near-surface and upper tropospheric time-mean wind convergence fields can actually be explained almost entirely by the frontal components alone (i.e. on a synoptic time-scale).
Critically, this suggests that the influence of western boundary currents on many aspects of the climatological atmosphere can be inferred from interactions occurring on a synoptic time-scale. For example, recent studies have shown perturbations in western boundary currents impacting mean atmospheric fields on a global scale. The results presented here suggest these induced teleconnections can potentially be attributed to the discrete interactions between oceanic and atmospheric fronts.