ESS227
Prof. Jin-Yi Yu
Meaning of the Scaled Continuity Eq.
scaled
•
Velocity divergence vanishes
(
)
in an
incompressible fluid.
•
For purely horizontal flow, the
atmosphere behaves as though
it were an incompressible fluid.
•
However, when there is
vertical motion the
compressibility associated with
the height dependence of ρ0
must be taken into account.