Swell Generation Under Extra‐Tropical Storms

Storms propagate over the ocean and create moving patches of strong winds that generate swell systems. Here, we describe dynamics wave generation under a storm by using simple parametric model development, forced temporally spatially varying wind field. This framework reveals how surface storms determine origin amplitude events. Swell systems are expected to originate from locations different than high-wind forcing regions. is confirmed physically informed optimization method back-triangulates common source their dispersion slopes, simultaneously measured at five wave-buoy locations. Hence, fetch with reanalysis can predict displacement between highest observed area. The further shows storm's peak speed key factor determining energy since it determines gradients lead spatial convergence into much smaller area fetch. then be described follow three-stage process outlines focus where enhanced slightly displaced maximum analysis provides an improved understanding fetches for extra-tropical may help identify biases in forecast models, air-sea fluxes, upper-ocean mixing estimations.