4. Droughts and Desertification

By | 3 Nov 2012
Geography CAPS > Grade 11 CAPS > Climate and Weather > 4. Droughts and Desertification

Areas at risk: regional and local scales

The global water crises

Drought risk Mapsource

Drought risk Map

Drought risk Map from http://www.eldoradocountyweather.com/climate/world-maps/world-drought-risk.html

Compare the above map with the one below of Total Annual Rainfall – source


Source: http://www.eldoradocountyweather.com/
Source: http://www.eldoradocountyweather.com/

Causes of droughts

Climate change is cause of Ethiopian drought
El Niño as a cause of drought in Australia
Global Dimming and drought – Sahel and Maldives examples

Causes of desertification

Desertification in the Sahel – causes and solutions

Effects of droughts and desertification on people and the environment

Mass migration of people and animals

Premature crops and food shortages

Crop devastation


Damage to buildings

Management strategies – case studies.

How to green the world’s deserts and reverse climate change