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首页> 外文期刊>Atmospheric research >A characterisation of sea-breeze events in the eastern Cantabrian coast (Spain) from observational data and WRF simulations
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A characterisation of sea-breeze events in the eastern Cantabrian coast (Spain) from observational data and WRF simulations

机译：根据观测数据和WRF模拟表征东坎塔布连海岸（西班牙）的海风事件

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摘要

The behaviour of the sea breeze along the north coast of Spain is investigated using observations of two topographically contrasting sites together with simulations from the Weather Research and Forecasting (WRF) model. An objective and systematic selection method is used to detect sea-breeze days from a database of two summer months. The direction and intensity of the sea breeze are significantly affected by the topography of the area; indeed, the estimated sea-breeze intensity shows an opposite relationship with the cross-shore temperature gradient for both sites. WRF simulations reproduce the onset of the sea breeze, but some characteristics are not adequately simulated: they generally overestimate the wind speed, smooth the temperature evolution and they do not represent the correct interaction with the terrain-induced flows. Additionally, four sensitivity experiments are performed with the WRF model varying the Planetary Boundary Layer (PBL) scheme, as well as the grid analysis nudging for an anomalous case study which is incorrectly filtered. As the two simulations considering nudging reproduce an unreal (not observed) sea breeze, this day turns out to be of great interest: it allows to evaluate the influence of the passage of the sea-breeze front (SBF) in other variables mainly related to turbulence. Furthermore, the best model scores are obtained for the PBL scheme that does not use a TKE closure. (C) 2016 Elsevier B.V. All rights reserved.
机译：通过对两个地形相反的站点进行观测，并结合天气研究和预报（WRF）模型的模拟，研究了西班牙北海岸海风的行为。客观而系统的选择方法用于从两个夏季月份的数据库中检测海风日。该地区的地形显着影响海风的方向和强度；实际上，估计的海风强度与两个地点的跨岸温度梯度都显示出相反的关系。 WRF模拟重现了海风的发作，但某些特征并未得到充分模拟：它们通常高估了风速，使温度变化趋于平滑，并且不能代表与地形诱发的水流的正确相互作用。此外，使用WRF模型改变了行星边界层（PBL）方案，并进行了网格敏感性分析，对异常案例研究进行了四个敏感性实验，该案例研究被错误地过滤。由于考虑到轻推的两个模拟再现了虚幻的（未观察到的）海风，因此今天引起了极大的兴趣：它允许评估海风锋（SBF）通过对其他主要与其他变量有关的影响。湍流。此外，对于不使用TKE闭包的PBL方案，可以获得最佳模型评分。 （C）2016 Elsevier B.V.保留所有权利。

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