Distributions grow out of grid without accounting/warning

[miggland]

Gion just experienced issues because he didn't know that the grid is constant for central difference/HIRES method and defined in initial distribution. His PSD grew out of the grid and then caused problems in the mass balance. A warning should be issued for this, and the solver stopped; or the grid should be extended.

[bizzinho]

There is a warning if the mass balance error is above 5%... I think an online test of whether particles have left the grid might be expensive.. so maybe we just adapt the warning for mass balance errors and make the threshold lower, say 1%?

[miggland]

Check of mass balance!
If using an event function: simulation can be stopped prematurely if mass balance is off by too much

[miggland]

This only applies to hires, because:

• cd is cancelled when mass balance error is too large
• mp extends the grid

In hr, the mass balance is OK what grows out of the grid seems to 'dissolve' in the sense that it is accounted for by the mass balance for the solution phase