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- Title
A parabolic model of drag coefficient for storm surge simulation in the South China Sea.
- Authors
Peng, Shiqiu; Li, Yineng
- Abstract
Drag coefficient (Cd) is an essential metric in the calculation of momentum exchange over the air-sea interface and thus has large impacts on the simulation or forecast of the upper ocean state associated with sea surface winds such as storm surges. Generally, Cd is a function of wind speed. However, the exact relationship between Cd and wind speed is still in dispute, and the widely-used formula that is a linear function of wind speed in an ocean model could lead to large bias at high wind speed. Here we establish a parabolic model of Cd based on storm surge observations and simulation in the South China Sea (SCS) through a number of tropical cyclone cases. Simulation of storm surges for independent Tropical cyclones (TCs) cases indicates that the new parabolic model of Cd outperforms traditional linear models.
- Subjects
DRAG coefficient; STORM surges; COMPUTER simulation; FORECASTING; WIND speed
- Publication
Scientific Reports, 2015, p15496
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep15496