期刊
JOURNAL OF THE ATMOSPHERIC SCIENCES
卷 75, 期 6, 页码 2065-2082出版社
AMER METEOROLOGICAL SOC
DOI: 10.1175/JAS-D-17-0397.1
关键词
-
资金
- program The One Hundred Talent Recruitment Program II, Sun Yat-sen University'' [74110-52601118]
The characteristics and mechanisms of diurnal rainfall and winds near the south coast of China are explored using satellite data (CMORPH), long-term hourly WRF Model data (Du model data), a simple 2D linear model, and 2D idealized simulations. Both the CMORPH and Du model data indicate that the diurnal cycle of rainfall has two propagation modes near the coast: onshore and offshore. The diurnally periodic winds (vertical motions) also show a similar propagation feature. Analysis of the rainfall budget indicates that vertically integrated vertical vapor advection plays a key role in the diurnal cycle of rainfall and thus provides a physical connection between winds and rainfall in the diurnal cycle. It was found that a simple 2D linear land-sea breeze model with a background wind can well capture the two propagation modes, which are associated with inertia-gravity waves, in terms of speed and phase. The background wind changes the pattern of the inertia-gravity waves and further affects the diurnal propagation. The effect of the background wind on the diurnal propagation was verified through idealized simulations using a simplified version of the WRF Model that can also capture the diurnal features.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据