where side-wall deposition flux terms

Fqix

dep

and

Fqiy

dep

are

negligible. Then, the effects of dry deposition on the species

concentration is accounted for by the following relationship:

where

hdepis the thickness of the lowest model layer in thegeometric height coordinate. In the derivation of Eq. (30),

we assume that the deposition flux is constant in the lower

part of the surface layer (i.e., a constant flux layer). In

CMAQ, a dry deposition estimation method from Wesely

[65] is available as a default option. Also a different

where

hdepis the thickness of the lowest model layer in thegeometric height coordinate. In the derivation of Eq. (30),

we assume that the deposition flux is constant in the lower

part of the surface layer (i.e., a constant flux layer). In

CMAQ, a dry deposition estimation method from Wesely

[65] is available as a default option. Also a different

29

Models-3/CMAQ approach by Pleim et al. [66] is available

for the special case when the aerodynamic resistance and the

canopy or bulk stomatal resistance are obtained from MM5

with a Pleim/Xiu PBL/land-surface option. Details of both

methods are described in Byun et al. [67].

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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