Accession Number:

ADA616445

Title:

Observation-Based Dissipation and Input Terms for Spectral Wave Models, with End-User Testing

Descriptive Note:

Corporate Author:

SWINBURNE UNIV OF TECHNOLOGY VICTORIA (AUSTRALIA)

Personal Author(s):

• Babanin, Alexander V.
• Young, Ian R.
• Rogers, W. E.
• Smith, Jane M.
• Tolman, Hendrik L.

Report Date:

2014-09-30

Pagination or Media Count:

13.0

Abstract:

The long-term goal is to implement input and dissipation source functions, based on advanced understanding of physics of air-sea interactions, wave breaking and swell attenuation, in waveforecast models. The objectives are to use new observation-based source terms for the wind input, wave-breaking whitecapping dissipation and swell decay in the third-generation models WAVEWATCH-III and SWAN. Calibration and performance of the source functions have to satisfy a set of physical constraints, and the methodology is developed to enable testing the source functions separately before they are blended in the full model. Verification is conducted by means of academic tests and hindcasting real-life scenarios defined by the end users from the US Navy, Army and NOAA, to include deep and finite-depth conditions, closed seas no swell and open ocean, extreme weather events, and global simulations.

Descriptors:

• *OCEAN WAVES
• AIR WATER INTERACTIONS
• ATTENUATION
• AUSTRALIA
• DISSIPATION
• VERIFICATION

Subject Categories:

• Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE