3.3.2 SENSIBLE HEAT FLUX (

H) IN THE SBLHaving computed

u*and 2

*for stable conditions, AERMET calculates the surface heat fluxfrom eq. (10) as

AERMET limits the amount of heat that can be lost by the underlying surface to 64 W m-2. This

value is based on a restriction that Hanna (1986) placed on the product of 2

*andu*. That is, fortypical conditions Hanna found that

When the heat flux, calculated from eq. (20), is such that 2

* u*> 0.05 m s-1 K, AERMETrecalculates

u*by substituting 0.05/u*into eq. (15) for 2

*(uoin eq. (15) is a function of 2

*).3.3.3 MONIN OBUKHOV LENGTH (

L) IN THE SBLUsing the sensible heat flux of eq.(20) and

u*from eq. (15), the Monin-Obukhov Length, forthe SBL is calculated from eq. (8).

3.4

Mixing HeightThe mixing height (

zi) in the CBL depends on both mechanical and convective processes andis assumed to be the larger of a mechanical mixing height (

zim) and a convective mixing height(

zic). Whereas, in the SBL, the mixing height results exclusively from mechanical (or shearinduced) turbulence and therefore is identically equal to

zim. The same expression for calculating

zimis used in both the CBL and the SBL. The following two sections describe the proceduresused to estimate

zicandzim, respectively.

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castellano: DISPER CUSTIC DESCAR RADIA italiano:

castellano: DIS CUS DES RAD english: DIS CUS DES RAD

português: DIS CUS DES RAD italiano: DIS CUS DES RAD