A numerical simulation study on the typhoon-ocean interaction in the South China Sea

作者：Guan Hao^*; Wang Han Jie; Zhou Lin; Yang Song

来源：Chinese Journal of Geophysics, 2011, 54(5): 1141-1149.

DOI：10.3969/j.issn.0001-5733.2011.05.001

• Typhoon
• Regional atmosphere-ocean coupled model
• Sea surface temperature
• Sea surface roughness length
• Sea spray

Based on the theory of atmosphere-current-Wave interaction, a regional atmosphere-ocean coupling system is formed in this paper. The complicated air-sea interaction under typhoon condition in South China Sea is studied using the coupling system. The experiment results show that the coupled model exhibits good capability in simulating the typhoon process and improves the simulation accuracy of typhoon track and intensity. With the feedback mechanism of the top oceanic environmental factors such as SST, sea spray and waves, the simulated typhoon system in the coupled model is stronger and moves more leftward than that in the uncoupled atmospheric model. The three different air-sea interaction processes, sea surface temperature (SST) decline, the spray effect and ocean wave action, have different influence on the typhoon system. SST decline and ocean wave act to resist the development of typhoon, while sea spray acts in an opposite way, it enhances the typhoon development through the heat transfer at the sea surface. In the three processes, the influences of SST decline and sea spray are more important, the influence of wave is least. The impact of air-sea interaction on the development of typhoon system is not a linear summation of the three factors. There are complicate interaction mechanisms among the three. Our conclusion is that in order to better explain and predict the occurrence and evolution of the weather disasters such as typhoon and other severe weather events in South China Sea, all the air-sea interaction processes should be considered.

• 出版日期2011-5
• 单位中国科学院