18
characterized with desert and desert-like environments, extending from Mauritania and
Morocco to Oman and United Arab Emirates. Second type of the most common lands,
is the semi-arid terrain and it is also found in almost all Arab countries except Lebanon
and Comoros. According to the Köppen-Geiger climate classification (Türkeş, 2010,
2012), the temperate dry summer (subtropical) Mediterranean climate has the highest
population density in the Arab World, with most of its 350 million citizen living within
this region. Only two terrains do not span the Arab League, the tropical wet and dry
climate in southern Sudan and southern Somalia, and the tropical wet climate in
Comoros Islands.
Figure 6.3. Precipitation in Arab Group Countries
Source: AQUASTAT, 2013
6.3. Asian Group
Bangladesh, Brunei, Indonesia and Malaysia in Asian Group have a total annual
precipitation greater than 2500 mm. Guyana and Suriname have a value of more than
2000 mm. In addition to these countries, Albania and the Maldives have annual
precipitations less than 1000 mm. Turkmenistan has the lowest amount total annual
precipitation in Asian Group of countries. Additionally, Iran, Kazakhstan and