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Focusing and Defocusing of Tropical Cyclone Generated Waves by Ocean Current Refraction
Author(s) -
Sun Rui,
Villas Bôas Ana B.,
Subramanian Aneesh C.,
Cornuelle Bruce D.,
Mazloff Matthew R.,
Miller Arthur J.,
Langodan Sabique,
Hoteit Ibrahim
Publication year - 2022
Publication title -
journal of geophysical research: oceans
Language(s) - English
Resource type - Journals
eISSN - 2169-9291
pISSN - 2169-9275
DOI - 10.1029/2021jc018112
Subject(s) - tropical cyclone , refraction , geology , tropical wave , climatology , wavelength , current (fluid) , cyclone (programming language) , amplitude , wind wave , meteorology , geophysics , oceanography , physics , optics , field programmable gate array , computer science , computer hardware
Waves generated by tropical cyclones can have devastating effects on coastal regions. However, the role of ocean currents in modifying wave amplitudes, wavelengths, and directions is commonly overlooked in wave forecasts, despite the fact that these interactions can lead to extreme wave conditions. Here, we use satellite observations and wave modeling to quantify the effects of ocean currents on the surface waves generated during a tropical cyclone event in the Arabian Sea. As a case study, this paper documents beams of wave heights originating from the eyewall of a tropical cyclone caused by current‐induced refraction. Alternating regions of high and low wave heights in the model simulations are consistent with observations and extend for thousands of kilometers all the way to 100 m isobath. Our results highlight the importance of accounting for wave refraction by currents in order to accurately predict the impact of tropical cyclone generated waves on coastal regions.