The precipitation conditions in the Sahel are most influenced by the position of:
A)the Polar-Front Jet Stream.
B)the Subtropical Jet Stream.
C)the Lower Level Jet Stream.
D)the Inter-Tropical Convergence Zone.

Question

Quizplus · Accepted Answer

The precipitation conditions in the Sahel are mainly influenced by the position of the Inter-Tropical Convergence Zone (ITCZ), which is a narrow zone near the equator where the trade winds from the Northern and Southern Hemispheres converge. This zone shifts northward during the summer months, bringing rain and humid conditions to the Sahel region. During the winter months, the ITCZ shifts southward, leaving the Sahel dry and arid. Therefore, the correct answer is D, the Inter-Tropical Convergence Zone. The other jet streams mentioned (Polar-Front Jet Stream and Subtropical Jet Stream) are located much farther from the Sahel and have a relatively minor influence on its precipitation conditions. The Lower Level Jet Stream may have some effect on the formation of thunderstorms in the region but is not the primary factor determining the overall precipitation patterns in the Sahel.

The Precipitation Conditions in the Sahel Are Most Influenced by the Position