Geoscience Reference
In-Depth Information
(
a
)
(
b
)
(
c
)
Fig. 7. The non-dimensional asymmetric vorticity pattern at time (a) 01 h, (b) 05 h and
(c) 12 h for case T20. To obtain vorticity in s
−
1
, multiply by 5
×
10
−
5
. To obtain radial
displacement in km, multiply by 1000.
the continuous intensification of the tangential wind in the outer region,
leading to the formation of the second peak in the symmetric tangential
wind profile.
To examine whether the aforementioned wind evolution characteristics
change with different initial perturbations, we conduct a set of parallel
experiments in which an initial wavenumber 3 asymmetry is introduced.
Figure 8 shows the symmetric tangential wind evolution in case H20,
where the initial asymmetric perturbation is placed at the radius of 0.2.
Compared to case T20, a weaker asymmetry is generated near the radius of
0.1 (Fig. 9(a)). The comparison of symmetric kinetic energy change rates
between the wavenumber 2 (T20) and wavenumber 3 (H20) perturbation
