Two well-developed sea-breeze cases in the La Plata River region, selected from a 5-month summer period, are studied using local observations, satellite images, and hydrostatic boundary-layer model simulations. Both the northern and southern coast cases are characterized by offshore regional flow that help develop stronger sea breezes due to enhanced horizontal convergence by the opposing flow. The study shows that the sea-breeze propagation accompanies changes in the three-dimensional circulation within the boundary layer. The inland propagation speed of the cloud bands evident in satellite imagery is simulated relatively well by the model’s progression of maximum vertical motion in both cases. Local coastline features affect the inland penetration of the sea-breeze fronts. The inland propagation speed of the surface sea-breeze front estimated with the model simulations is greater than the speed of the cloud bands aloft.

中文翻译：

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使用本地观测、卫星图像和模型模拟在拉普拉塔河地区进行的海风案例研究

使用本地观测、卫星图像和流体静力边界层模型模拟，从 5 个月的夏季期间选择了拉普拉塔河地区两个发展良好的海风案例。北部和南部海岸的案例都以离岸区域流为特征，由于反向流动增强了水平辐合，这有助于形成更强的海风。研究表明，海风传播伴随边界层内三维环流的变化。通过模型在两种情况下的最大垂直运动的进展，卫星图像中明显的云带的内陆传播速度得到了相对较好的模拟。当地海岸线特征影响海风锋的内陆渗透。