The Study of Low-Level Wind Shear and Structure of Small Scale Turbulence Occurred in the Sea Breeze Penetration.

1986 ~ 1991年在高知大学大气边界层观测站（ABO）进行了海风观测。两种主要测量设备本文用声温仪（SAT）和多普勒声雷达（Doppler sodar）研究了海风的穿透时间和海风穿透对近地层湍流结构的影响，经调和分析，得到了SAT和Doppler Sodar的穿透时间经验公式。显示出明显的季节性变化，并与日出时间的变化密切相关。海风锋经常在海面造成一些强烈的风切变，反映了大的下沉气流（在前部穿透之前）和上升气流（在前部穿透之后）。这些流动也影响湍流量，如湍流尺度和湍流动能耗散。

The observation of the sea breeze has been carried out in the Atmospheric Boundary-Layer Observatory (ABO) of Kochi University during the period from 1986 to 1991. The two main measuring equipments ([1]Sonic Anemometer-Thermometer (SAT) and[2]Doppler sodar) were used to investigate the penetration time of sea breeze and the turbulent structure of the surface layer affected by the sea breeze pnetration.The empirical formulae of the penetration time obtained by both SAT and Sodar, after a harmonic analysis, indicate clear seasonal variation and strongly related to variation in sun rise time.Sea breeze front often occasion some of the strong wind shear at the surface, reflecting the large downdraft (before front penetration) and updraft (after front penetration). These flows also effect the turbulence quantities such as the scale of turbulence and the dissipation of turbulent kinetic energy.