Geography Reference
In-Depth Information
these two cases. By running different time intervals, determine the approxi-
mate period of oscillation in each case (i.e., the time to return to the original
latitude.)
M1.4.
More strange behavior near the equator. Run the script
const ang
mom traj1.m
by specifying initial conditions of latitude
=
0, u
=
0,
50 m s
−
1
, and a time of about 5 or 10 days. Notice that the motion is
symmetric about the equator and that there is a net eastward drift. Why does
providing a parcel with an initial poleward velocity at the equator lead to
an eastward average displacement? By trying different initial meridional
velocities in the range of 50 to 250 m s
−
1
, determine the approximate
dependence of the maximum latitude reached by the ball on the initial
meridional velocity. Also determine how the net eastward displacement
depends on the initial meridional velocity. Show your results in a table or
plot them using MATLAB.
v
=
Suggested References
Complete reference information is provided in the Bibliography at the end of the topic.
Wallace and Hobbs,
Atmospheric Science: An Introductory Survey
, discusses much of the material in
this chapter at an elementary level.
Curry and Webster,
Thermodynamics of Atmospheres and Oceans
, contains a more advanced discussion
of atmospheric statistics.
Durran (1993) discusses the constant angular momentum oscillation in detail.
