Preprint Article Version 1 This version is not peer-reviewed Version 1 : Received: 26 September 2024 / Approved: 27 September 2024 / Online: 27 September 2024 (07:18:14 CEST) Chan, Y.; Lo, K.; Cheung, P.; Chan, P.; Lai, K. Observation and Numerical Simulation of Cross-Mountain Airflow at the Hong Kong International Airport from Range Height Indicator Scans of Radar and LIDAR. Preprints 2024, 2024092185. https://doi.org/10.20944/preprints202409.2185.v1 Chan, Y.; Lo, K.; Cheung, P.; Chan, P.; Lai, K.