A 1 km Hourly High-Resolution 3D Wind Field Dataset over the Yangtze River Delta during June-August 2021-2023

The 3D wind field dataset was generated through dynamic downscaling using the Weather Research and Forecasting (WRF) model, driven by ERA5 reanalysis data from the European Centre for Medium-Range Weather Forecasts (ECMWF). The simulation incorporates multi-source observational nudging, optimized physical parameterization schemes, and high-resolution land use updates to enhance the accuracy of local atmospheric processes. This dataset includes four variables: 10-meter zonal wind (U10m), 10-meter meridional wind (V10m), zonal wind profile (U), and meridional wind profile (V). The vertical wind profiles are provided on 32 ERA5-standard pressure levels from 1000 hPa to 10 hPa. All data are stored in NetCDF format with lossless compression enabled. Key variables are encoded using scale_factor and add_offset attributes, following the relation: real_value = scale_factor × packed_value + add_offset. The dataset complies with CF conventions and can be automatically decoded by standard tools such as xarray, NCL, and CDO, without manual intervention.