ESS124
Prof.
Jin-Yi Yu
Combined Curvature and
Jetstreak Effects
•The convergence/divergence produced by the curvature and
jetstreak effects cancels each other to the south of the jetstream axis but enhances each
other to the north of the jetsream.
•The strongest divergence aloft occurs on the northeast side of
the trough, where a surface low pressure tens to develop.
•The strongest convergence aloft occurs on the northwest side of
the trough, where a surface high pressure tends to develop. However, other processes are
more important that this upper-level convergence in affecting the development of high pressure
system.
Surface low will develop ahead of the upper-level trough.
