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海洋飞沫对热带气旋影响的数值试验 总被引：3，自引：0，他引：3
将最新版的Andreas海洋飞沫通量参数化方案与中尺度大气模式MM5V3耦合,对0514号热带气旋Nabi进行数值模拟,探讨海洋飞沫蒸发对热带气旋发展和演变的影响.模拟结果表明,考虑海洋飞沫的作用后,热带气旋范围内(气旋中心附近600 km左右范围内)的潜热和感热通量明显增强,尤其是潜热通量,最大值可提高35%～80%,潜热通量的大值区对应热带气旋眼墙处的最大风速区.无论是否考虑海洋飞沫作用,模式均能较好地模拟出热带气旋Nabi的移动路径,但考虑飞沫作用后,由于飞沫对海气界面通量交换的贡献,使得模拟热带气旋中心的最低海平面气压降低,最大风速增强,暖心结构更加明显. 相似文献
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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. 相似文献
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