海雾形成机制的初步研究
PRELIMINARY STUDY ON THE FORMATIVE MECHANISM OF THE SEA FOG
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摘要: 海雾是近海面层大气的水汽凝结现象.这种现象的发生是大气与海洋及大气内部热量和水汽交换的结果.Rodhe,B.[1]曾用湍流扩散方程讨论过湍流对雾形成的作用.Fisher,E.F.和Caplan[1]首次对雾和层云的形成进行数值试验.Abstract: Based on the advective-turbulent transport equation of heat of the infrared radiation and the water-vapor advective-turbulent diffusion equation together waith their corresponding definite conditions, a two-layer model of simulated sea fog is proposed.This model differs from the Barker's model in that the turbulent boundary layer is not treated as a constant flux layer but the temperature and the moisture of this layer are considered to be affected by turbulence advection and infrared radiation. Furthermore, according to the characteristics of the weather process of sea fog formation, an analytical solution is given after the nonlinear terms of the equations are treated.Finally, the contributions of each physical factor to the temperature and the moisture of the forecast point are computed and discussed.
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Rodhe,B.,Tellus,14(1962),49-86. Fisher,E,L.and Caplan,.J.,Atmos.Sei,20(1963),5,425-437. Barker,E,H.,Oceanic fog o numerical study,AD 16(1973).7934. Barker,E,H.,Bound,layer.Meteor.,11(1977),267-294. Brown,R.and Roach,W,T.,Quart.J.R,Met.Soc.,102(1976),336-854. Roach.W.T,and Slingo,A Quart.J.R,Met.Soc.,105(1979),603-613. Cox,S,K Weather Rev.,91(1969).637-651. -
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