In-Situ Wave Observations in the High Resolution Air-Sea Interaction DRI
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Authors
Herbers, Thomas H.C.
Janssen, Tim T.
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Advisors
Date of Issue
2007-09
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Abstract
LONG-TERM GOALS: Ocean wave prediction models, based on a spectral energy balance, are widely used to obtain windwave forecasts and hindcasts on global and regional scales (e.g., Komen et al., 1994). However, these inherently stochastic models assume a Gaussian and homogeneous sea state and thus do not describe the nonlinear instability processes that can dramatically alter the structure of wave groups and produce anomalously large waves, also known as ‘freak’ or ‘rogue’ waves (e.g., Janssen, 2003). Fully deterministic modeling capabilities are now becoming available that incorporate these nonlinear effects and provide the detailed phase-resolved sea surface predictions needed in many applications. Concurrent with the development of new models, advances in radar remote sensing techniques are enabling the detailed observation of the sea surface on the scales of wave groups and individual waves. The long-term goal of this research is to test these emerging new models and measurement technologies in realistic sea states and use them to better understand and predict the wave group structure and occurrence of extreme waves in the ocean.
Type
Report
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Department
Oceanography
Organization
Naval Postgraduate School (U.S.)
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Award Number: N0001407WR20160
Format
7 p.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.