[RegCNET] Dust Emission-Deposition versus Burden

[Solmon Fabien]

Hello Netsanet

The fluxes ( emissions deposition) are averaged fluxes between two
output time steps.
They have unit of flux density, but instead of being Kg.m-2.s-1 , they
are mg.m-2.day-1 .
If you want the total emitted mass between T-1 and T , T being your
output time , you have simply to convert your flux  in hr-1 and multiply
the number of hours between 2 output :
eg : for 6 h outputs : M(T-1,T) =  F (T-1,T) / 24 * 6   (mg/m2)
then you can of course accumulate over any period of time

The burden is instantaneous : Burden(T)

If you are doing some mass budget studies , I strongly recomand you to
use also the option ichdiag = 1 :  that will give you the tracer
tendencies (again averaged between two outputs time steps) linked to
every tracer processes including emission, settling and
depoistion,rainout,washout, tbl, conv, adv,  and boundary conditions  , 
in every part of the domain .

Fabien


 
 




On 11/26/2013 11:06 AM, Mirkana Degenie wrote:
> Dear all
>
> I want to compare the dust emission minus deposition against burden.
> Dust emission and deposition have units of mg.m-2.day-1 but the
> outputs are made every one hour. Is it consistent? or do I need to
> convert the per day output to per hour? And how can I make comparison
> of emission minus emission versus burden(which has a unit of mg.m-2).
> Emiision and deposition are flux(rate of transfer of mass). So how can
> I get the mass itself from emission or deposition.
>
> regards,
> Netsanet
>
>
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Fabien Solmon
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