Response of the first order spectrum of radar for severe tropical storm Lionrock at high frequency surface waves

This study undertakes a comprehensive assessment of the first order spectrum response from high frequency surface wave radar (HFSWR) during the severe tropical storm Lionrock, employing six consecutive days of current data collected via HFSWR within the southwestern region of the Taiwan Straits. The findings elucidate that the storm phase instigated marked modifications to ocean surface currents as observed by HFSWR. A substantial broadening of the first order spectrum is notable during the storm's duration, accompanied by an enhancement of the first order spectrum's SNR by roughly 2-10dB.