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Severe weather conditions may affect the structural integrity of buildings and infrastructures in port areas. Recommendations provided in international codes are currently based on the quasi-steady atmospheric boundary layer (ABL) winds which are not entirely representative of all the winds that may occur in the lower atmosphere. For example, ABL winds are often characterized by a lower mean wind velocity near the ground compared to other types of winds such as downbursts, tornadoes, and downslope winds (DWs). DWs develop when cold air flows over a mountain ridge with a steep lee slope, where the orographic wave breaking commonly occurs, and the cold air further slides down the mountain. DWs are well-known to occur all over the world. Thus, investigating the nature of DWs is mandatory to improve the current standards and safely management procedures of port infrastructure and operations. In this study, a measurement campaign was carried out using the LiDAR installed in the Port of Genoa to analyze DWs descending from the Apennines to the Ligurian coastline through the Turchino Valley. LiDAR scans were conducted from December 2024 to early March 2025, when DWs occur more frequently. RHI and PPI scans were carried out during six strong DW events using azimuthal angles from 295° to 330°, scanning elevations from 0° to 15°, range gates from 0.3 to 14.3 km, and 100 m resolution. The representative results of the studied DW events are presented here.

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Ligurian Downslope Winds Assessed Using LiDAR Scanner for the Safety Management of Port Areas

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年

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  • Ivana Ivančić,
  • Alessio Ricci,
  • Massimiliano Burlando,
  • Djordje Romanic,
  • Branko Grisogono,
  • Hrvoje Kozmar

摘要

Severe weather conditions may affect the structural integrity of buildings and infrastructures in port areas. Recommendations provided in international codes are currently based on the quasi-steady atmospheric boundary layer (ABL) winds which are not entirely representative of all the winds that may occur in the lower atmosphere. For example, ABL winds are often characterized by a lower mean wind velocity near the ground compared to other types of winds such as downbursts, tornadoes, and downslope winds (DWs). DWs develop when cold air flows over a mountain ridge with a steep lee slope, where the orographic wave breaking commonly occurs, and the cold air further slides down the mountain. DWs are well-known to occur all over the world. Thus, investigating the nature of DWs is mandatory to improve the current standards and safely management procedures of port infrastructure and operations. In this study, a measurement campaign was carried out using the LiDAR installed in the Port of Genoa to analyze DWs descending from the Apennines to the Ligurian coastline through the Turchino Valley. LiDAR scans were conducted from December 2024 to early March 2025, when DWs occur more frequently. RHI and PPI scans were carried out during six strong DW events using azimuthal angles from 295° to 330°, scanning elevations from 0° to 15°, range gates from 0.3 to 14.3 km, and 100 m resolution. The representative results of the studied DW events are presented here.