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- W4381570226 abstract "Abstract The 18-year database of European Synthetic Aperture Radars (SAR) provides worldwide surface wind measurements at one-kilometre resolution. Through an innovative vertical extrapolation methodology published in 2022, these long-term, wide, and high-resolution observations can complement in-situ observations and mesoscale modelling for offshore wind resource assessment. The methodology is based on four steps: (i) derivation of the 10-min SAR surface winds from SAR sea surface roughness, (ii) a site- and time-independent machine learning algorithm based on a large buoy network to correct SAR winds due to biases inherent to the characteristics of the satellite sensors and wind retrieval methodology, (iii) extrapolation up to a few hundred meters based on a second machine learning algorithm trained with in-situ observations and physical parameters from a high-resolution mesoscale model related to e.g. atmospheric stability, and (iv) a final post-processing step to correct for low temporal sampling of the SAR database (a couple of days in Europe for one satellite) and retrieve wind statistics. The resulting output is a 1-km resolution wind atlas in a large (> 3000 km 2 ) offshore and/or coastal area where strong coastal gradients will be accounted for. It can also integrate directly the estimation of the extractible wind power. Here, an improvement of the extrapolation method is presented and applied to a French offshore area in South Brittany. The wind atlas obtained with SAR is found to display a much finer level of details and estimate more precisely the coastal gradient." @default.
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- W4381570226 date "2023-05-01" @default.
- W4381570226 modified "2023-09-27" @default.
- W4381570226 title "High-resolution satellite observations to account for coastal gradient in wind resource assessment: application to French coastal areas" @default.
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- W4381570226 doi "https://doi.org/10.1088/1742-6596/2505/1/012027" @default.
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