Man Land Relationship. In the Tropical Desert. What are deserts?. These regions are characterized by very low annual rainfall (usually less than 300 mm) Sparse vegetation Extensive areas of bare, rocky mountains, plateau and alluvial plains. Sand dunes cover less than 1/3 of desert regions.
In the Tropical Desert
Deserts cover approximately 1/3 of the Earth’s land surface.
stable air masses in
the subtropical anti-
cyclonic belts maintain arid conditions throughout the year
develop strong high-
pressure cells, reducing
the influence of frontal system in winter
The Himalayas in central Asia to prevent
penetration of the south-west monsoon to the Gobi and Takla Makan deserts
western coast of South
America and southern
Africa (Atacame, Namib)
owe their hyperarid climates to the influence of
cold oceanic currents offshore.
In the Tropical Deserts
– leading to flash flood & serious soil erosion
- high thermal input
- long growing season
- favour aviation, satellite observation and
- retirement centres e.g. Mediterranean, Sahara