Waveguide Collapse, Wave Breaking, and Rotor-Modulated Downward Momentum Transfer During a Lee-Slope Strong-Wind Event Downstream of the Helan Mountains

# 2026-03-21 Yinchuan Hedong Airport Lee-Wave/Rotor Case: Submission Data Package This English-only package contains processed data used to support the manuscript on the 21 March 2026 strong-wind, lee-wave, rotor, and downward momentum-transfer event over the lee slope of the Helan Mountains. The package does not include original operational lidar, microwave radiometer, or airport automatic weather station files. Those raw observations are subject to local data-management rules. The files provided here are derived products, diagnostics, and reproducible intermediate tables used for the figures, quantitative statements, and physical interpretation in the manuscript. ## Directory Contents - `01_dbs_wind_tke_momentum`: DBS wind retrievals, TKE, signed momentum flux, and along-flow acceleration forcing. - `02_rhi_rotor_wave`: Processed DBS/RHI lidar products and mountain-wave/rotor time-series reports. - `03_mwr_waveguide`: Microwave-radiometer-based waveguide, stability, Richardson number, and Scorer-parameter diagnostics. - `04_era5_background`: ERA5 background-field diagnostics and pressure-level subset. - `05_processing_scripts`: English-sanitized copies of processing scripts. Original source files were not modified.