GEOG 1101 Lecture Notes - Lecture 1: Intertropical Convergence Zone
13 Apr 2017
School
Department
Course
Professor
Document Summary
Sahel (shore and coast to the desert in africa) o. Arid, hot, strong seasonal variations (dry season and wet season) in rainfall (higher in south and towards coast) and temp o. Inter-tropical convergence zone (itcz) moves north during the summer, bringing rain. It is at different places at different times of the year. Winter to summer = land warms so air warms. With lower air pressure, wind comes in from higher pressure to lower pressure. o. Rains less now than it used to because human activity is shaping the environment. Rising water temperature (great barrier reef dying, glaciers melting) causes decrease in strength of monsoon which decreases amount of rain o o. Desert locusts moving south: as itcz moves south, so does rain, which makes locusts move south (because eggs laid in wet ground) and impacts grain producing areas of sahel.
