This formula attempts to resolve the dichotomy existing

between the contrasting dependency on grid resolution in the

components of horizontal diffusivity. Figure 3 evaluates Eq.

(26) for various grid sizes and magnitudes of deformation.

For a large grid size, the effect of the transportive dispersion

27

is minimized while for a small grid size the impact of the

numerical diffusion term is reduced.

Vertical Diffusion

Sub-grid scale vertical diffusion of trace pollutants in the

atmospheric boundary layer is another one of the important

physical processes. Emissions can be included either in the

vertical diffusion or gas-phase chemistry module. The

vertical diffusion equation is written in terms of the mixing

ratio as follows:

 

 

n1051 - n1052 - n1053 - n1054 - n1055 - n1056 - n1057 - n1058 - n1059 - n1060 - n1061 - n1062 - n1063 - n1064 - n1065 - n1066 - n1067 - n1068 - n1069 - n1070 - n1071 - n1072 - n1073 - n1074 - n1075 - n1076 - n1077 - n1078 - n1079 - n1080 - n1081 - n1082 - n1083 - n1084 - n1085 - n1086 - n1087 - n1088 - n1089 - n1090 - n1091 - n1092 - n1093 - n1094 - n1095 - n1096 - n1097 - n1098 - n1099 - n1100

 

   Flag of Portugal 

 english:

 castellano: DISPER CUSTIC DESCAR RADIA    italiano:     

 

 français:    português:  

 

deutsch:

 

 

deutsch: DIS CUS  DES  RAD

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

 

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

 

français:  DIS CUS DES RAD