Relationships Between the Typhoon‐Induced Wind and Waves in the Northern South China Sea

다국어 초록 (Multilingual Abstract)

Wind‐wave interactions have been broadly investigated for their great implications on air‐sea momentum transfer, whereas our knowledge on those forced by typhoons (hurricanes) is still limited. Accordingly, relationships between wind and wave characteristics were analyzed using observations on the northern South China Sea during four typhoons. An empirical wind‐wave model was proposed for typhoon‐induced wind seas which exhibits satisfactory skills in predicting significant wave heights (Hs). Meanwhile, typhoon‐forced wind‐wave relation was investigated using the wave growth function. By delineating the relationship between the dimensionless Hs and peak wave period scaled with 10 m and friction wind velocities, simplified functions for the growing and steady wind seas were proposed, respectively. However, great misalignment could occur owing to the contamination of swells resulting from the typhoon's slow translation speed, as well as the extremely short or long radial distance from typhoon centers, indicating the necessity of considering typhoon structures in screening swell influences.
Wind and waves interact with each other at the ocean surface, and such processes have significant impacts on oceanic and atmospheric dynamics. As our knowledge of typhoon‐forced wind waves is still limited, we investigated the wind‐wave relationship using buoy observations on the northern South China Sea. An empirical model was proposed for typhoon‐induced wind seas which exhibits satisfactory skills in predicting significant wave heights. Meanwhile, relationships between wind and wave characteristics of the growing and steady wind seas were derived using simplified wave growth functions. Such formulas could well estimate wind speed using observed wave characteristics, whereas errors could present with the contamination of swells, indicating the necessity of considering typhoon structures in screening swell influences.



A wind‐wave model for typhoon‐induced growing wind seas is proposed based on a quadratic function

The relationship between wind and wave characteristics was derived from simplified wave growth functions

Typhoon structures should be considered for a more efficient screening of swells


A wind‐wave model for typhoon‐induced growing wind seas is proposed based on a quadratic function
The relationship between wind and wave characteristics was derived from simplified wave growth functions
Typhoon structures should be considered for a more efficient screening of swells