Evaporation of salt water

Question

Hi Chris,

I have a question about salinity.

When the saline water evaporate, the salinity remains in a water body or evaporate from there?

In a real system, salinity does not evaporate. I want to know how AEM3d treats salinity evaporation.

Regards,

Hiroshi

Answer 1

Hi Hiroshi,

No salinity (or any other WQ components) are evaporated.

Chris

Comments

Thank you for your prompt reply.
Now evaporation is clarified.
I have done 10 years simulation for the connected two saline lakes.
The salinity in both lakes are well produced by aem3d.
But the budget from the simulation is inconsistent with the salinity change in the lakes.
I though output interval of 1 hr may not be enough to evaluate the budget.
Is there any possibility of this?
If you have some idea, please let me know.

Cheers,
Hiroshi

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Hi Hiroshi, one thing that can affect the salinity budget is the wetting of new cells.  By default, the new cells are given the salinity of the neighboring cell.  But this actually adds salinity to the system.   There is a run_aem3d.dat flag ifillnewwetwithzero which forces scalars (except temperature) for new cells to be set to zero.  This is better at preserving salt mass but can lead to strange dynamics as it leads to fresh water intrusions from the shallows.

Chris

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Hi Chris,
Thank you for giving me another clue.
Hiroshi