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presentation I - MANHAZ

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Advection<br />

Bott 4 th order - horizontal<br />

Bott 2 nd order with variable grid distance in<br />

vertical<br />

Pure air is also advected to conserve mass<br />

After each advection step the new mixing<br />

ratios are calculated:<br />

C<br />

p<br />

t+<br />

∆T<br />

x<br />

*<br />

=<br />

* t+<br />

∆t<br />

x = * t+<br />

∆t<br />

( Cair<br />

p )<br />

p<br />

S<br />

(<br />

C<br />

−<br />

p<br />

T<br />

p<br />

)

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