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本文利用三层模型,讨论了由浮力作用引起的混合层的形成、发展和覆盖逆温层的抬升问题,并进一步讨论了大气边界层中基本的牵引过程。通过讨论能量收支问题,建立了较合适的参数化方程。对覆盖逆温层的形成、维持及其随时间的变化作了理论分析。在此基础上,还建立了描写混合层高度、逆温层厚度及其逆温强度的方程组,并获得了相应的近似解析解。文中采用大气物理研究所的声雷达探测资料和Wangara实验数据检验了理论结果,计算值与观测值基本一致。
Based on the three-layer model, this paper discusses the formation and development of mixed layers caused by buoyancy and the uplift of overlying inversion layer, and further discusses the basic traction process in the atmospheric boundary layer. By discussing the issue of energy budget, a more appropriate parametric equation is established. The formation of the inversion layer, the maintenance and its change with time are analyzed theoretically. On this basis, an equation describing the height of mixed layer, the thickness of in-situ inversion layer and its inverse temperature intensity has also been established, and the corresponding analytical solution has been obtained. In this paper, the sonic radar data and Wangara experimental data from the Institute of Atmospheric Physics are used to verify the theoretical results. The calculated values agree well with the observed values.