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| NUMERICAL EXPERIMENTS ON THE IMPACTS OF SEA SPRAY ON TROPICAL CYCLONES | |
| 作者姓名： | 郑静 费建芳 王元 黄小刚 李启明 吴宏毅 |
| 作者单位： | Institute of Meteorology, PLA University of Science & Technology |
| 基金项目： | Key Program of National Natural Science Foundation of China (40830235, 40333025); State Key Development Program of Basic Research (973 Program) of China (2004CB418301) |
| 摘 要： | The latest version of sea spray flux parameterization scheme developed by Andreas is coupled
with the PSU/NCAR model MM5 in this paper. A western Pacific tropical cyclone named Nabi in 2005 is
simulated using this coupled air-sea spray modeling system to study the impacts of sea spray evaporation
on the evolution of tropical cyclones. The results demonstrate that sea spray can lead to a significant
increase of heat fluxes in the air-sea interface, especially the latent heat flux, the maximum of which can
increase by up to about 35% - 80% The latent heat flux seems to be more important than the sensible heat
flux for the evolution of tropical cyclones. Regardless of whether sea spray fluxes have been considered,
the model can always simulate the track of Nabi well, which seems to indicate that sea spray has little
impact on the movement of tropical cyclones. However, with sea spray fluxes taken into account in the
model, the intensity of a simulated tropical cyclone can have significant increase. Due to the enhancement
of water vapor and heat from the sea surface to the air caused by sea spray, the warm core structure is
better-defined, the minimum sea level pressure decreases and the vertical speed is stronger around the eye
in the experiments, which is propitious to the development and evolution of tropical cyclones. |
| 关 键 词： | 热带气旋 数值试验 喷射 海水 潜热通量 海气界面 跟踪模拟 参数化方案 |
NUMERICAL EXPERIMENTS ON THE IMPACTS OF SEA SPRAY ON TROPICAL CYCLONES |
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| ZHENG Jing,FEI Jian-fang,WANG Yuan,HUANG Xiao-gang,LI Qi-ming and WU Hong-yi.NUMERICAL EXPERIMENTS ON THE IMPACTS OF SEA SPRAY ON TROPICAL CYCLONES[J].Journal of Tropical Meteorology,2009,15(1):54-58. | |
| Authors: | ZHENG Jing FEI Jian-fang WANG Yuan HUANG Xiao-gang LI Qi-ming and WU Hong-yi |
| Institution: | 1. Institute of Meteorology,PLA University of Science & Technology,Nanjing 211101 China;Post No.76,PLA Troops 73061,Xuzhou 221008 China 2. Institute of Meteorology,PLA University of Science & Technology,Nanjing 211101 China;Meteorology Observatory of PLA Navy 91774,Shanghai 200083 China 3. Meteorology Observatory of PLA Navy 91774,Shanghai 200083 China 4. Institute of Meteorology,PLA University of Science & Technology,Nanjing 211101 China |
| Abstract: | The latest version of sea spray flux parameterization scheme developed by Andreas is coupled with the PSU/NCAR model MM5 in this paper. A western Pacific tropical cyclone named Nabi in 2005 is simulated using this coupled air-sea spray modeling system to study the impacts of sea spray evaporation on the evolution of tropical cyclones. The results demonstrate that sea spray can lead to a significant increase of heat fluxes in the air-sea interface, especially the latent heat flux, the maximum of which can increase by up to about 35% - 80% The latent heat flux seems to be more important than the sensible heat flux for the evolution of tropical cyclones. Regardless of whether sea spray fluxes have been considered, the model can always simulate the track of Nabi well, which seems to indicate that sea spray has little impact on the movement of tropical cyclones. However, with sea spray fluxes taken into account in the model, the intensity of a simulated tropical cyclone can have significant increase. Due to the enhancement of water vapor and heat from the sea surface to the air caused by sea spray, the warm core structure is better-defined, the minimum sea level pressure decreases and the vertical speed is stronger around the eye in the experiments, which is propitious to the development and evolution of tropical cyclones. |
| Keywords: | numerical simulation tropical cyclone sea spray parameterization scheme |
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