Drag Coefficient Parameterization under Hurricane Wind Conditions

Autor: Alexandra Mikhailovna Kuznetsova, Georgy Alekseyevich Baydakov, Alexander Sergeyevich Dosaev, Yuliya Igorevna Troitskaya
Rok vydání: 2023
Předmět:
Zdroj: Water; Volume 15; Issue 10; Pages: 1830
ISSN: 2073-4441
DOI: 10.3390/w15101830
Popis: The influence of small-scale processes at the ocean-atmosphere boundary layer such as spray and foam on the surface waves prediction is studied. Estimates of the effect of including the exact number of specific fragmentation "parachute" type in the spray on the resulting drag coefficient is shown. For the estimates, the numerical simulations within WAVEWATCH III wave model are performed. The parameterizations of wind input were tested within WAVEWATCH III wave model: default ST4 and ST6 parameterizations and the ST1 and ST6 parameterizations used together with the implemented drag coefficient parameterization. The proposed parameterization takes into account the presence of foam and spay. The obtained results are compared with the NDBC buoys data. The importance of small-scale processes for waves at hurricane winds prediction and the prospects for their inclusion in modern numerical wave models is shown.
Databáze: OpenAIRE