Extreme 50-Year Return Wind Ensemble

This item contains the ocean and coastal, near-global, 10-min equivalent 50-year return winds derived from the three reanalysis products CFSR, ERA5 and MERRA-2 calculated during the GASPOC project. They are provided at four different heights, namely 50 m, 100 m, 150 m and 200 m. For each of the three reanalysis products, two sub-layers are available:
- A high resolution layer with approximately 275 m grid spacing which provides the data for the coastal region between 0 km and 200 km distance from the shoreline. It is made available on the same grid and spatial extension as the Global Wind Atlas for convenience.
Naming convention: extreme_wspd_${height}m_epsg4326_landmasked.${reanalysis}.tif
- Beyond the 200 km coastline, data is provided on a regular 0.25x0.25 degree grid.
PLEASE NOTE: While the low resolution data layer also contains data points within the coastal zone, it is not recommended to use the low-resolution data for near-coastal estimates.
Naming convention: offshore_era5grid_epsg4326_extreme_wspd_${height}m.${reanalysis}.tif
The datasets are accompanied by a technical report with more details on the methodology, which can be accessed here: https://orbit.dtu.dk/en/publications/global-atlas-for-siting-parameters-ocean-and-coasts-ensemble-calc
The files are provided as Cloud Optimized GeoTiffs. They can be visualized using GIS software, such as the free and OpenSource Q-GIS. If working with python, rioxarray can be used to read them into an XArray Dataset for further processing.

本数据集包含由CFSR、ERA5和MERRA-2三种再分析产品计算得出的近全球范围10分钟等效50年一遇风速数据，这些数据是在GASPOC项目中生成的。数据提供于四个不同的高度，即50米、100米、150米和200米。针对三种再分析产品，各有两层子层可供使用：
- 一层高分辨率层，其网格间距约为275米，提供距离海岸线0至200公里范围内的海岸区域数据。该层数据以与全球风图相同的网格和空间扩展提供，以便于使用。
命名规范：extreme_wspd_${height}m_epsg4326_landmasked.${reanalysis}.tif
- 超过200公里海岸线范围之外，数据以0.25x0.25度的规则网格提供。
请注意：尽管低分辨率数据层也包含海岸区域内的数据点，但并不建议使用低分辨率数据进行近海岸估算。
命名规范：offshore_era5grid_epsg4326_extreme_wspd_${height}m.${reanalysis}.tif
数据集附带一份技术报告，其中详细介绍了方法，可通过以下链接获取：https://orbit.dtu.dk/en/publications/global-atlas-for-siting-parameters-ocean-and-coasts-ensemble-calc
文件以云优化GeoTiff格式提供。可以使用GIS软件，如免费开源的Q-GIS进行可视化。如果使用Python，则可以使用rioxarray将其读取到XArray数据集以进行进一步处理。