13: Wave-ice interaction in the Marginal Ice Zone: toward a wave-ocean-ice coupled modeling system
نویسندگان
چکیده
Our main objective is to improve an operational model for wind-generated surface gravity waves (WAVEWATCH III ®) such that it can accurately predict the attenuation and scattering of waves by interaction with ice in the Marginal Ice Zone (MIZ). The wave model physics developed here will later be part of an operational coupled model system, allowing feedback to ice, ocean, and atmospheric models. OBJECTIVES The specific objective of this proposal is to fully exploit the theoretical, observational, and ice/ocean/atmosphere numerical modeling work performed by various groups within the MIZ DRI and the " Sea State Sea State and Boundary Layer Physics of the Emerging Arctic Ocean " DRI to improve wave predictions.) is a phase-averaged wave model solved by integrating the wave action conservation equation. Local rates of change of wave spectral density is determined by advection in four dimensions (two geographic and two spectral dimensions) and source terms representing various dynamic processes, such as energy transfer from the wind, and energy lost due to wave breaking. The present approach in WAVEWATCH III (" WW3 ") is to represent the effect of ice on waves as part of the advection, such that under partial ice cover, wave energy is partially blocked, with linear scaling of the blocked fraction according to ice concentration (Tolman 2003). This is a practical approach for an operational model, since present state of knowledge of wave-ice interaction hardly justifies more rigorous methods, especially not at the resolution at which the model is typically applied. In any case, ice concentration is the only ice variable traditionally available for input to the wave model in an operational environment. However,
منابع مشابه
15: Wave-ice Interaction in the Marginal Ice Zone: Toward a Wave-ocean-ice Coupled Modeling System
متن کامل
Wave-Ice Interaction in the Marginal Ice Zone: Toward a Wave-Ocean-Ice Coupled Modeling System
The WAVEWATCH III model (Tolman 1991, Tolman et al. 2002, Tolman 2009) is a phase-averaged wave model solved by integrating the wave action conservation equation. Local rates of change of wave spectral density is determined by advection in four dimensions (two geographic and two spectral dimensions) and source terms representing various dynamic processes, such as energy transfer from the wind, ...
متن کامل15: An Arctic Ice/Ocean Coupled Model with Wave Interactions
– further our understanding of the hydrodynamical interactions between polar oceans and sea ice, especially with regard to the marginal ice zone (MIZ), i.e. the typically 10–100 km wide m ́elange of ice floes that connects open sea to the interior pack ice; – model the attenuation and spreading of directional seas within and in the waters adjoining MIZs, using a conservative, multiple wave scatt...
متن کامل13: Radar Remote Sensing of Ice and Sea State and Air-Sea Interaction in the Marginal Ice Zone
The goals of this project are to utilize shipborne remote sensing to understand the scattering and attenuation process of ocean waves interacting with ice. A dedicated nautical X-band radar on a vessel would be used to follow the propagation of waves into the marginal ice zone (MIZ) and observe the attenuation and scattering of wave modes from the floating ice as well as estimate surface wind a...
متن کاملModelling wave-induced sea ice break-up in the marginal ice zone
A model of ice floe break-up under ocean wave forcing in the marginal ice zone (MIZ) is proposed to investigate how floe size distribution (FSD) evolves under repeated wave break-up events. A three-dimensional linear model of ocean wave scattering by a finite array of compliant circular ice floes is coupled to a flexural failure model, which breaks a floe into two floes provided the two-dimensi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2013