| Our country has very long coastal line and abundant ocean resource. The development of ocean economy has greatly enhanced the power of our country. But at the same time, the disastrous synoptic systems which frequently occur over the seas greatly threaten the safety of littoral. So, it is very important to promote the forecast ability of ocean environment. The disastrous synoptic systems are almost all of mesoscale phenomena. During the process of them, there are intense air-sea-wave interactions. Also, the feedback mechanism of air-sea-wave interactions influences the development of the disastrous synoptic systems. Therefore, to develop an air-sea-wave coupled model system which can detail describe the air-sea-wave interaction has become a very important method to promote the forecast ability of ocean environment. It has significant meaning to the disaster prevention, shipping, coastal engineering, etc.The research of this paper includes three main parts:(1) Construct a Mesoscale air-sea-wave Coupled Model System (MCMS). According to the analysis of scientific and technologic questions about the MCMS, the paper chose the developed numerical models as single module and designed a multi-models coupler as information exchange platform. By these two ways, the paper constructed the MCMS. This coupled model system includes four parts: a mesoscale atmospheric module (MM5V3 or AREM), ocean module (P0M2K or ECOM-si), wave module (WAVEWATCHâ…¢) and distributed multi-models coupler. On the base of them, as to enable the MCMS can correctly describe the air-sea-wave interaction, the paper studied the physics process between air, sea and wave on the coupled interface. Also, relevant parameterization schemes have been selected. China coastal seas are the place where disastrous synoptic system always occurs. The paper applied MCMS in this area and checked it. Primary simulation indicated that MCMS can run stably and parallelly with good communication efficiency. Also it can correctly describe the mesoscale air-sea-wave interaction.(2) Do the simulation research about disastrous synoptic systems by Mesoscale air-sea-wave Coupled Model. The paper also representatively selected two typical typhoon cases, a typhoon formed in South China Sea and a typhoon passing over East China Sea, as research objects and simulated them by MCMS. On the base of the simulate results, it analyzed the ocean response to the typhoon and discussed the quantitative influence of air-sea-wave interaction to the development of typhoon and its mechanism. The simulation results showed that MCMS can well simulated the response of sea to the typhoon, such as decrease of SST, storm surge, high wind and huge wave, typhoon rainfall, etc. The results were well consist with the observation. At the same time, air-sea-wave interaction influenced the development of typhoon through a positive / negative feedback mechanism. These all proved that MCMS has high forecast ability to the ocean disastrous synoptic system.(3) Applied mesoscale air-sea-wave coupled model system in the field of marine transportation safety and environment. MCMS can well predict the ocean environment. Besides used in science theory research, how about the performance of MCMS used in real activity is also a key point of this paper. A high-resolution coupled model system is used in virtual reality of ship navigation simulation. After that, a flexible version of MCMS was applied in Zhoushan islands. The paper used it in some question of marine transportation safety and environment, such as safety evaluation of navigation environment about harbour building, response simulation of real oil spill accident and environment safety assessment to the port waters. These results all showed that MCMS could provide the correct ocean environment data and serve for the maritime traffic.
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