海面动量、感热和水汽输送的动力学分析

基于大气边界层动量、感热和水汽通量的基本方程,定量地计算了波动海面的动量、感热和水汽通量。首先,应用Prandtl的混合长概念,推导出贴海面大气层中风速、位温和比湿的涡动交换率及其贴海面层厚度,并且证明了波面上位温或比湿贴海面层厚度与速度贴海面层厚度的比值,和平面上的相应比值完全相等。随后,利用空气动力学理论讨论了贴海面动量、感热和水汽输送的参数化问题。最后,对现有五种理论模式进行了比较说明。

DYNAMIC ANALYSIS FOR MOMENTUM,SENSIBLE HEAT AND WATER VAPOUR TRANSFERS OVER THE SEA

On the basis of the momentum, sensible heat and water vapour flux basic equations in the iatmospheric boundary layer, the momentum, sensible heat and water vapour fluxes over the wave sea surface are estimated. By use of the mixing length concept of Prandtl, the eddy viscosity of the wind speed, potential temperature and specific humidity in the near sea surface atmospheric layer and their thicknesses are derived and the agreement of the ratio between the thicknesses of the near sea surface layer for the potential temperature or specific humidity and for the wind speed over the wave sea surface with the corresponding ratio over the plain is proved. The parametriza-tion problem of the momentum, sensible heat and water vapour transfer over the near sea surface is discussed by means of the aerodynamic theory. Finally, the comparative explanation is presented for the existing five theoretical models.