Sensible heat flux

Fig. 9.5 Sensible heat flux (a), u (b), mixing height (c) and Kz (d) computed by RAMS grey solid line with squares) and SURFPRO dotted line with triangles) during summer thunderstorm episode in Torino...

The calculation of the resistance coefficients can be accomplished in the frame of the Monin-Obukhov similarity theory (Monin and Yaglom, 1971). The genuine flux quantities are the friction velocity u and the scale functions 0 and referring to temperature and humidity. The turbulent momentum flux f, the sensible heat flux the mass flux from evaporation and condensation and the corresponding latent heat flux are... 

Also simultaneously measure sensible heat flux (or evaporation). ... 

In closed air circulation mode, no heat exchange between water and air is present. The relative humidity reaches nearly 100%, and the latent heat flux vanishes. The temperature in the air space of the facility quickly (approximately 1 minute) adjusts to the water temperature so that, in addition, the sensible heat flux is eliminated. Thus no net heat flux at the water surface is present and the bulk temperature is equal to the surface temperature (see Fig. 5). 

Figure 9. Fluxes of methanol measured with a fast response PTR-MS instrument during hay harvesting at a field site in western Austria. The data shown are for methanol fluxes on the second day after hay cutting, and for periods when the prevailing wind was suitable. Methanol fluxes largely correlated with air temperature, declined sharply in the afternoon, and approached zero as the hay harvest began after 15 45. Also plotted are sensible heat flux (i.e. transfer of heat due to conduction and convection) and latent heat flux (i.e. heat loss due to evaporation of liquid water). Data redrawn from Ref. [45].

Consider a fluid consisting of a mixture of substances A and B at a bulk temperature Tl that flows past a second phase under conditions causing mass transfer from one phase to the other through an interface at a temperature Tr The total sensible heat flux to the interface qs is given by (Treybal, 1980)... 

Large and positive latent and sensible heat fluxes are found in the Kuroshio and the warm eddy east of the Kuroshio core, which is a high temperature region. This shows that the distributions of latent and sensible heat fluxes... 

The early development process of cyclones is very important in the ECS and a definite fact is that the heat fluxes are transferred from ocean to atmosphere, in which the latent heat flux is not only more important than the sensible heat flux but is about 20 times that of the sensible heat flux. The heat fluxes transferred from ocean to atmosphere accelerate the instability of the atmosphere in the lower layer, which is one of the important causes leading to a cyclone developing in the ECS. 

The incoming energy to the system is dependent on the location of the road. The net energy supplied to the surface is divided into change in heat storage in the pavement structure, sensible heat flux and latent heat flux. 

So far, we have considered neutral conditions in the surface layer. In cases with light to moderate wind speeds, the effects of surface heating and cooling also become rel-evant. Consequently, the virtual sensible heat flux w9m at the surface needs to be considered as an important variable as well [because it impacts on the buoyancy term in Eq. (3)]. The combination of surface heat flux with friction velocity defines a characteristic length scale L, given by... 

Sensible heat flux = pCpCr T - T ir)U o = Hs Latent heat flux = LTpCEiqsea - qakWw = Hi Moisture flux = /OCfC sea - qairWw = E... 

Heat transfer between the substrate and the cloud. The transfer can be a sensible heat flux or a... 

In Equations [18.4] and [18.5] the resistivities are denoted by the symbol r, and the superscript denotes that these relate to the membrane, while the subscript identifies the type of resistivity. The diagonal resistivities, and can be related to the conductivity and diffusivity respectively, while the off-diagonal resistivities describe the coupling between heat and mass transfer. Also, the mass flux is denoted by J, and the sensible heat flux is denoted... 

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