A 1-km hourly meteorological dataset for the Haizishan alpine region of the southeastern Tibetan Plateau

This record provides a 1-km hourly meteorological dataset for the Haizishan alpine region of the southeastern Tibetan Plateau, spanning December 2022 to March 2026. The dataset combines ERA5-Land background fields, observations from three automatic weather stations at elevations of 3561–4505 m, and a Copernicus DEM GLO-30 terrain layer harmonized to station elevations. The release includes four top-level files: 01_main_hourly_1km.zip: Monthly 1-km NetCDF files containing 2 m air temperature, 2 m relative humidity, hourly precipitation depth, station-corrected 2 m wind speed, source-station counts, quality flags, support levels, validation tiers, and first-order station-support indices. 02_secondary_wind_era5_2m.zip: Monthly NetCDF files containing ERA5-Land 10 m wind speed adjusted to 2 m without station residual correction. 03_scripts.zip: Processing scripts and configuration files used to generate and validate the products. 04_README.md: Product structure, variable descriptions, coordinate and time conventions, usage notes, and run instructions. The product grid has a 1-km resolution over 28.5–30.5° N and 99.0–101.0° E, with projected coordinates in EPSG:32647. Time is provided in UTC, with an auxiliary Asia/Shanghai local-time coordinate to support alignment with station observations. The dataset is intended for studies of alpine hydrology, ecosystems, phenology, ERA5-Land evaluation, and complex-terrain microclimates. Users should interpret the product as an ERA5-Land gridded dataset adjusted and evaluated using sparse station observations, rather than as a replacement for dense local measurements. Quality flags, support levels, source-station counts, nearest-station distance, validation tiers, and station-support indices should be used when screening pixels far from observation sites or periods with limited station support.