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A multi-scale study of wind fields retrieved using synthetic aperture radars and scatterometers

机译:使用合成孔径雷达和散射仪检索风田的多尺度研究

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Different physical phenomena could affect the wind fields retrieved using synthetic aperture radars or scatterometers. The influence of these phenomena varies with the spatial scales considered. In this paper, using multi-scale analysis, we compare wind data obtained via different sources. Scatterometer data is integrated into a blended wind product available at IFREMER. This product is the result of an optimal interpolation, based on the kriging approach, of ECMWF analysis wind fields, radiometers and scatterometers wind measurements. The blended wind fields have a spatial resolution of 0.25° (~ 25 km). We use these wind fields in our analysis and compare them with wind fields retrieved using the synthetic aperture radar on-board ENVISAT with a spatial resolution of 1 km. The ability of synthetic aperture radars to retrieve wind measurements near the coast permits to evaluate the influence of some coastal effects, tidal currents for example. The study case considered in this paper is the northern coasts of the French region of Brittany. This study is undertaken under the framework of the MODENA project.
机译:不同的物理现象可以影响使用合成孔径雷达或散射仪检索的风力。这些现象的影响因空间尺度而变化。本文采用多尺度分析,我们比较通过不同来源获得的风数据。散射仪数据集成到IFREMER提供的混纺风产品中。该产品是基于Kriging方法的最佳插值的结果,ECMWF分析风场,辐射仪和散射仪风测量。混纺风场的空间分辨率为0.25°(〜25公里)。我们在分析中使用这些风力领域,并将它们与使用合成孔径雷达在板上的环境中检索的风电场进行比较,其空间分辨率为1公里。合成孔径雷达在海岸附近检索风测量的能力允许评估一些沿海效应,例如潮流的影响。本文考虑的研究案例是布列塔尼法国地区的北部海岸。本研究在摩德纳项目的框架下进行。

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