Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

On Surface Waves Generated By Extra-Tropical Cyclones. Part II: Simulations

Version 1 : Received: 14 March 2023 / Approved: 15 March 2023 / Online: 15 March 2023 (10:51:31 CET)

A peer-reviewed article of this Preprint also exists.

Cheshm Siyahi, V.; Kudryavtsev, V.; Yurovskaya, M.; Collard, F.; Chapron, B. On Surface Waves Generated by Extra-Tropical Cyclones—Part II: Simulations. Remote Sens. 2023, 15, 2377. Cheshm Siyahi, V.; Kudryavtsev, V.; Yurovskaya, M.; Collard, F.; Chapron, B. On Surface Waves Generated by Extra-Tropical Cyclones—Part II: Simulations. Remote Sens. 2023, 15, 2377.

Abstract

In a previous companion study, satellite data were used to describe peculiar characteristics of ocean surface wave fields, generated by two extra-tropical cyclones (ETCs) rapidly propagating in the North Atlantic. Based on a 2D parametric wave model, further details are now provided to analyse and interpret the spatio-temporal evolution of ETC very intense generated waves. Significant wave height and wavelength values are shown to reach extreme values, 18 m and 500 m, respectively. Resulting energetic swell systems waves then radiate in the whole eastern part of North Atlantic, and more particularly in the Norwegian sea region. Moving to higher latitudes, wind forcing characteristics of ETCs evolve, with the shape of the wind field changing from quasi-cyclonic to "air jets/Icelandic lows". In this paper, the resulting swell generation and propagation, after the deformation of an individual ETC, are studied, as well. Confirmed with comparisons with multi-satellite observations, the application of the parametric-2D wave-ray model is demonstrated to provide robust and highly detailed information on wave generation under very complex wind regime changes.

Keywords

Extreme Waves; Extra-Tropical Cyclones; Altimeter and SWIM-CFOSAT; Ocean Surface Waves Remote Sensing; Atlantic Ocean; Ocean Surface Waves Monitoring and Modeling; Parametric-2D Wave-ray Model; Swell Evolution; Synthetic Aperture Radar

Subject

Environmental and Earth Sciences, Oceanography

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