[RegCNET] Dust model implementation

[Fabien SOLMON]

Hello

here is an example of nameliste for 4 dusrt bins . ntr =4 , nbin =4



$chemparam
 
idirect   =    1,
"calculate a clear sky aeroso sw radiative forcing , WITHOUT  climatic
feedback , set to 2 if you want a climatic feedback of aerosols, set to
0 if you are not inrterested in forcing but just transport.


chtrname  =  'DUST','DUST','DUST','DUST',
 
"specify DUST aerosols"

chtrsol   =  0.00, 0.00, 0.00, 0.00,
 
"this is a parameter that control wet deposition , a sort of solubility
", set to 0 will result in no wet deposition , set to 1 to a very
hygrophilic particles ( like sulfate) ...  see solmon et al. and zakey
et al., here dust are considered as totally hydrophobic ..


chtrdpv   = 0.00000,0.00000,0.00000,0.00000,0.00000,0.00000,0.00000,0.00000,
 
" this parameter is an aerosol dry deposition velocity over land and
over sea. This parameter does not matter for the dust because an
explicit size derpendant dry deposition is used. This parameter is only
valid when you use sulfate or carbon aerosol. In the next version , an
explicit deposition scheme will be  added for any kind of aerosol, and
this parameter will be suppressed.

dustbsiz  =  0.01, 1.00, 1.00, 2.50, 2.50, 5.00, 5.00,20.00,
 
The most important for dust: it specifies the bins size . Note that if
you have for bins , you must define 8 sizes ..here the first bins is
0.01 to 1 microm, the second 1 to 2.5 and so on ..


Hope it helps


Fabien

$



Martin Todd a écrit :
> Hello,
>
> Follwing the question of Marc marcella about the dust implementaion, I 
> too am having problems with this. As suggested I have se the number of 
> tracers to 4 in the file /main/parame. I have set the chemistry parameters 
> as follows
>
> chtrname  =    'DUST','DUST','DUST','DUST',
>   chtrsol   =  0.50,  0.60,  0.70,  0.80,
>   chtrdpv   =  0.00025,0.00050,0.00075,0.00100,
>   dustbsiz  =  0.01, 1.00, 2.50, 5.00,
>
> The model runs but can anyone confirm the meaning of the parameters 
> chtrsol and chtrdpv
>
> thanks
>
> Martin
>
> ****************************
> Martin Todd
> Reader
> Department of Geography
> UCL (University College London)
> Pearson Building
> Gower Street
> London
> WC1E 6BT
>
> email m.todd at geog.ucl.ac.uk
> tel: +44 (0)20 7679 0571
> ********************************
> _______________________________________________
> RegCNET mailing list
> RegCNET at lists.ictp.it
> https://lists.ictp.it/mailman/listinfo/regcnet
>
>